// Copyright 2019-2021 the Deno authors. All rights reserved. MIT license. use lazy_static::lazy_static; use std::any::type_name; use std::cell::RefCell; use std::collections::hash_map::DefaultHasher; use std::collections::HashMap; use std::convert::{Into, TryFrom, TryInto}; use std::ffi::c_void; use std::ffi::CStr; use std::hash::Hash; use std::mem::MaybeUninit; use std::os::raw::c_char; use std::ptr::NonNull; use std::sync::atomic::{AtomicUsize, Ordering}; use std::sync::Arc; use std::sync::Mutex; use v8::fast_api; // TODO(piscisaureus): Ideally there would be no need to import this trait. use v8::MapFnTo; #[must_use] struct SetupGuard {} impl Drop for SetupGuard { fn drop(&mut self) { // TODO shutdown process cleanly. } } fn setup() -> SetupGuard { static START: std::sync::Once = std::sync::Once::new(); START.call_once(|| { assert!(v8::icu::set_common_data_71(align_data::include_aligned!( align_data::Align16, "../third_party/icu/common/icudtl.dat" )) .is_ok()); v8::V8::set_flags_from_string( "--no_freeze_flags_after_init --expose_gc --harmony-import-assertions --harmony-shadow-realm --allow_natives_syntax --turbo_fast_api_calls", ); v8::V8::initialize_platform( v8::new_default_platform(0, false).make_shared(), ); v8::V8::initialize(); }); SetupGuard {} } #[test] fn handle_scope_nested() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope1 = &mut v8::HandleScope::new(isolate); { let _scope2 = &mut v8::HandleScope::new(scope1); } } } #[test] #[allow(clippy::float_cmp)] fn handle_scope_numbers() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope1 = &mut v8::HandleScope::new(isolate); let l1 = v8::Integer::new(scope1, -123); let l2 = v8::Integer::new_from_unsigned(scope1, 456); { let scope2 = &mut v8::HandleScope::new(scope1); let l3 = v8::Number::new(scope2, 78.9); let l4 = v8::Local::::try_from(l1).unwrap(); let l5 = v8::Local::::try_from(l2).unwrap(); assert_eq!(l1.value(), -123); assert_eq!(l2.value(), 456); assert_eq!(l3.value(), 78.9); assert_eq!(l4.value(), -123); assert_eq!(l5.value(), 456); assert_eq!(v8::Number::value(&l1), -123f64); assert_eq!(v8::Number::value(&l2), 456f64); } } } #[test] fn handle_scope_non_lexical_lifetime() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope1 = &mut v8::HandleScope::new(isolate); // Despite `local` living slightly longer than `scope2`, this test should // not crash. let local = { let scope2 = &mut v8::HandleScope::new(scope1); v8::Integer::new(scope2, 123) }; assert_eq!(local.value(), 123); } #[test] fn global_handles() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let g1: v8::Global; let mut g2: Option> = None; let g3: v8::Global; let g4: v8::Global; let mut g5: Option> = None; let g6; { let scope = &mut v8::HandleScope::new(isolate); let l1 = v8::String::new(scope, "bla").unwrap(); let l2 = v8::Integer::new(scope, 123); g1 = v8::Global::new(scope, l1); g2.replace(v8::Global::new(scope, l2)); g3 = v8::Global::new(scope, g2.as_ref().unwrap()); g4 = v8::Global::new(scope, l2); let l5 = v8::Integer::new(scope, 100); g5.replace(v8::Global::new(scope, l5)); g6 = g1.clone(); } { let scope = &mut v8::HandleScope::new(isolate); assert_eq!(g1.open(scope).to_rust_string_lossy(scope), "bla"); assert_eq!(g2.as_ref().unwrap().open(scope).value(), 123); assert_eq!(g3.open(scope).value(), 123); assert_eq!(g4.open(scope).value(), 123); { let num = g5.as_ref().unwrap().open(scope); assert_eq!(num.value(), 100); } g5.take(); assert!(g6 == g1); assert_eq!(g6.open(scope).to_rust_string_lossy(scope), "bla"); } { let g1_ptr = g1.clone().into_raw(); let g1_reconstructed = unsafe { v8::Global::from_raw(isolate, g1_ptr) }; assert_eq!(g1, g1_reconstructed); } } #[test] fn global_from_into_raw() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let (raw, weak) = { let scope = &mut v8::HandleScope::new(scope); let local = v8::Object::new(scope); let global = v8::Global::new(scope, local); let weak = v8::Weak::new(scope, &global); let raw = global.into_raw(); (raw, weak) }; eval(scope, "gc()").unwrap(); assert!(!weak.is_empty()); { let reconstructed = unsafe { v8::Global::from_raw(scope, raw) }; let global_from_weak = weak.to_global(scope).unwrap(); assert_eq!(global_from_weak, reconstructed); } eval(scope, "gc()").unwrap(); assert!(weak.is_empty()); } #[test] fn local_handle_deref() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let key = v8::String::new(scope, "key").unwrap(); let obj: v8::Local = v8::Object::new(scope); obj.get(scope, key.into()); { use v8::Handle; obj.get(scope, key.into()); obj.open(scope).get(scope, key.into()); } } #[test] fn global_handle_drop() { let _setup_guard = setup(); // Global 'g1' will be dropped _after_ the Isolate has been disposed. #[allow(clippy::needless_late_init)] let _g1: v8::Global; let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let l1 = v8::String::new(scope, "foo").unwrap(); _g1 = v8::Global::new(scope, l1); // Global 'g2' will be dropped _before_ the Isolate has been disposed. let l2 = v8::String::new(scope, "bar").unwrap(); let _g2 = v8::Global::new(scope, l2); } #[test] fn test_string() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let reference = "Hello 🦕 world!"; let local = v8::String::new(scope, reference).unwrap(); assert_eq!(15, local.length()); assert_eq!(17, local.utf8_length(scope)); assert_eq!(reference, local.to_rust_string_lossy(scope)); let mut vec = Vec::new(); vec.resize(17, 0); let options = v8::WriteOptions::NO_NULL_TERMINATION; let mut nchars = 0; assert_eq!( 17, local.write_utf8(scope, &mut vec, Some(&mut nchars), options) ); assert_eq!(15, nchars); let mut u16_buffer = [0u16; 16]; assert_eq!(15, local.write(scope, &mut u16_buffer, 0, options)); assert_eq!( String::from(reference), String::from_utf16(&u16_buffer[..15]).unwrap() ); } { let scope = &mut v8::HandleScope::new(isolate); let local = v8::String::empty(scope); assert_eq!(0, local.length()); assert_eq!(0, local.utf8_length(scope)); assert_eq!("", local.to_rust_string_lossy(scope)); } { let scope = &mut v8::HandleScope::new(isolate); let local = v8::String::new_from_utf8(scope, b"", v8::NewStringType::Normal).unwrap(); assert_eq!(0, local.length()); assert_eq!(0, local.utf8_length(scope)); assert_eq!("", local.to_rust_string_lossy(scope)); } { let scope = &mut v8::HandleScope::new(isolate); let local = v8::String::new_from_one_byte(scope, b"foo", v8::NewStringType::Normal) .unwrap(); assert_eq!(3, local.length()); assert_eq!(3, local.utf8_length(scope)); let options = v8::WriteOptions::NO_NULL_TERMINATION; let mut buffer = [0u8; 3]; assert_eq!(3, local.write_one_byte(scope, &mut buffer, 0, options)); assert_eq!(b"foo", &buffer); assert_eq!("foo", local.to_rust_string_lossy(scope)); } { let scope = &mut v8::HandleScope::new(isolate); let local = v8::String::new_from_two_byte( scope, &[0xD83E, 0xDD95], v8::NewStringType::Normal, ) .unwrap(); assert_eq!(2, local.length()); assert_eq!(4, local.utf8_length(scope)); assert_eq!("🦕", local.to_rust_string_lossy(scope)); } { let scope = &mut v8::HandleScope::new(isolate); let buffer = (0..v8::String::max_length() / 4) .map(|_| '\u{10348}') // UTF8: 0xF0 0x90 0x8D 0x88 .collect::(); let local = v8::String::new_from_utf8( scope, buffer.as_bytes(), v8::NewStringType::Normal, ) .unwrap(); // U+10348 is 2 UTF-16 code units, which is the unit of v8::String.length(). assert_eq!(v8::String::max_length() / 2, local.length()); assert_eq!(buffer, local.to_rust_string_lossy(scope)); let too_long = (0..(v8::String::max_length() / 4) + 1) .map(|_| '\u{10348}') // UTF8: 0xF0 0x90 0x8D 0x88 .collect::(); let none = v8::String::new_from_utf8( scope, too_long.as_bytes(), v8::NewStringType::Normal, ); assert!(none.is_none()); } } #[test] #[allow(clippy::float_cmp)] fn escapable_handle_scope() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let handle_scope = &mut v8::HandleScope::new(isolate); // After dropping EscapableHandleScope, we should be able to // read escaped values. let number = { let escapable_scope = &mut v8::EscapableHandleScope::new(handle_scope); let number = v8::Number::new(escapable_scope, 78.9); escapable_scope.escape(number) }; assert_eq!(number.value(), 78.9); let string = { let escapable_scope = &mut v8::EscapableHandleScope::new(handle_scope); let string = v8::String::new(escapable_scope, "Hello 🦕 world!").unwrap(); escapable_scope.escape(string) }; assert_eq!("Hello 🦕 world!", string.to_rust_string_lossy(handle_scope)); let string = { let escapable_scope = &mut v8::EscapableHandleScope::new(handle_scope); let nested_str_val = { let nested_escapable_scope = &mut v8::EscapableHandleScope::new(escapable_scope); let string = v8::String::new(nested_escapable_scope, "Hello 🦕 world!").unwrap(); nested_escapable_scope.escape(string) }; escapable_scope.escape(nested_str_val) }; assert_eq!("Hello 🦕 world!", string.to_rust_string_lossy(handle_scope)); } } #[test] #[should_panic(expected = "EscapableHandleScope::escape() called twice")] fn escapable_handle_scope_can_escape_only_once() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope1 = &mut v8::HandleScope::new(isolate); let scope2 = &mut v8::EscapableHandleScope::new(scope1); let local1 = v8::Integer::new(scope2, -123); let escaped1 = scope2.escape(local1); assert!(escaped1 == local1); let local2 = v8::Integer::new(scope2, 456); let escaped2 = scope2.escape(local2); assert!(escaped2 == local2); } #[test] fn context_scope() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context1 = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context1); assert!(scope.get_current_context() == context1); assert!(scope.get_entered_or_microtask_context() == context1); { let context2 = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context2); assert!(scope.get_current_context() == context2); assert!(scope.get_entered_or_microtask_context() == context2); } assert!(scope.get_current_context() == context1); assert!(scope.get_entered_or_microtask_context() == context1); } #[test] #[should_panic( expected = "HandleScope<()> and Context do not belong to the same Isolate" )] fn context_scope_param_and_context_must_share_isolate() { let _setup_guard = setup(); let isolate1 = &mut v8::Isolate::new(Default::default()); let isolate2 = &mut v8::Isolate::new(Default::default()); let scope1 = &mut v8::HandleScope::new(isolate1); let scope2 = &mut v8::HandleScope::new(isolate2); let context1 = v8::Context::new(scope1); let context2 = v8::Context::new(scope2); let _context_scope_12 = &mut v8::ContextScope::new(scope1, context2); let _context_scope_21 = &mut v8::ContextScope::new(scope2, context1); } #[test] #[should_panic( expected = "attempt to use Handle in an Isolate that is not its host" )] fn handle_scope_param_and_context_must_share_isolate() { let _setup_guard = setup(); let isolate1 = &mut v8::Isolate::new(Default::default()); let isolate2 = &mut v8::Isolate::new(Default::default()); let global_context1; let global_context2; { let scope1 = &mut v8::HandleScope::new(isolate1); let scope2 = &mut v8::HandleScope::new(isolate2); let local_context_1 = v8::Context::new(scope1); let local_context_2 = v8::Context::new(scope2); global_context1 = v8::Global::new(scope1, local_context_1); global_context2 = v8::Global::new(scope2, local_context_2); } let _handle_scope_12 = &mut v8::HandleScope::with_context(isolate1, global_context2); let _handle_scope_21 = &mut v8::HandleScope::with_context(isolate2, global_context1); } #[test] fn microtasks() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); assert_eq!(isolate.get_microtasks_policy(), v8::MicrotasksPolicy::Auto); isolate.set_microtasks_policy(v8::MicrotasksPolicy::Explicit); assert_eq!( isolate.get_microtasks_policy(), v8::MicrotasksPolicy::Explicit ); isolate.perform_microtask_checkpoint(); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); static CALL_COUNT: AtomicUsize = AtomicUsize::new(0); let function = v8::Function::new( scope, |_: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, _: v8::ReturnValue| { CALL_COUNT.fetch_add(1, Ordering::SeqCst); }, ) .unwrap(); scope.enqueue_microtask(function); // Flushes the microtasks queue unless the policy is set to explicit. let _ = eval(scope, "").unwrap(); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 0); scope.perform_microtask_checkpoint(); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 1); scope.set_microtasks_policy(v8::MicrotasksPolicy::Auto); assert_eq!(scope.get_microtasks_policy(), v8::MicrotasksPolicy::Auto); scope.enqueue_microtask(function); let _ = eval(scope, "").unwrap(); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 2); } } #[test] fn get_isolate_from_handle() { extern "C" { fn v8__internal__GetIsolateFromHeapObject( location: *const v8::Data, ) -> *mut v8::Isolate; } fn check_handle_helper( isolate: &mut v8::Isolate, expect_some: Option, local: v8::Local, ) { let isolate_ptr = NonNull::from(isolate); let maybe_ptr = unsafe { v8__internal__GetIsolateFromHeapObject(&*local) }; let maybe_ptr = NonNull::new(maybe_ptr); if let Some(ptr) = maybe_ptr { assert_eq!(ptr, isolate_ptr); } if let Some(expected_some) = expect_some { assert_eq!(maybe_ptr.is_some(), expected_some); } } fn check_handle<'s, F, D>( scope: &mut v8::HandleScope<'s>, expect_some: Option, f: F, ) where F: Fn(&mut v8::HandleScope<'s>) -> D, D: Into>, { let local = f(scope).into(); // Check that we can get the isolate from a Local. check_handle_helper(scope, expect_some, local); // Check that we can still get it after converting it to a Global. let global = v8::Global::new(scope, local); let local2 = v8::Local::new(scope, &global); check_handle_helper(scope, expect_some, local2); } fn check_eval<'s>( scope: &mut v8::HandleScope<'s>, expect_some: Option, code: &str, ) { check_handle(scope, expect_some, |scope| eval(scope, code).unwrap()); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); check_handle(scope, None, |s| v8::null(s)); check_handle(scope, None, |s| v8::undefined(s)); check_handle(scope, None, |s| v8::Boolean::new(s, true)); check_handle(scope, None, |s| v8::Boolean::new(s, false)); check_handle(scope, None, |s| v8::String::new(s, "").unwrap()); check_eval(scope, None, "''"); check_handle(scope, Some(true), |s| v8::String::new(s, "Words").unwrap()); check_eval(scope, Some(true), "'Hello'"); check_eval(scope, Some(true), "Symbol()"); check_handle(scope, Some(true), v8::Object::new); check_eval(scope, Some(true), "this"); check_handle(scope, Some(true), |s| s.get_current_context()); check_eval(scope, Some(true), "({ foo: 'bar' })"); check_eval(scope, Some(true), "() => {}"); check_handle(scope, Some(true), |s| v8::Number::new(s, 4.2f64)); check_handle(scope, Some(true), |s| v8::Number::new(s, -0f64)); check_handle(scope, Some(false), |s| v8::Integer::new(s, 0)); check_eval(scope, Some(true), "3.3"); check_eval(scope, Some(false), "3.3 / 3.3"); } #[test] fn array_buffer() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let ab = v8::ArrayBuffer::new(scope, 42); assert_eq!(42, ab.byte_length()); assert!(ab.is_detachable()); ab.detach(); assert_eq!(0, ab.byte_length()); ab.detach(); // Calling it twice should be a no-op. let bs = v8::ArrayBuffer::new_backing_store(scope, 84); assert_eq!(84, bs.byte_length()); assert!(!bs.is_shared()); // SAFETY: Manually deallocating memory once V8 calls the // deleter callback. unsafe extern "C" fn backing_store_deleter_callback( data: *mut c_void, byte_length: usize, deleter_data: *mut c_void, ) { let slice = std::slice::from_raw_parts(data as *const u8, byte_length); assert_eq!(slice, &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); assert_eq!(byte_length, 10); assert_eq!(deleter_data, std::ptr::null_mut()); let layout = std::alloc::Layout::new::<[u8; 10]>(); std::alloc::dealloc(data as *mut u8, layout); } // SAFETY: Manually allocating memory so that it will be only // deleted when V8 calls deleter callback. let data = unsafe { let layout = std::alloc::Layout::new::<[u8; 10]>(); let ptr = std::alloc::alloc(layout); (ptr as *mut [u8; 10]).write([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); ptr as *mut c_void }; let unique_bs = unsafe { v8::ArrayBuffer::new_backing_store_from_ptr( data, 10, backing_store_deleter_callback, std::ptr::null_mut(), ) }; assert_eq!(10, unique_bs.byte_length()); assert!(!unique_bs.is_shared()); assert_eq!(unique_bs[0].get(), 0); assert_eq!(unique_bs[9].get(), 9); // From Box<[u8]> let data: Box<[u8]> = vec![0, 1, 2, 3, 4, 5, 6, 7, 8, 9].into_boxed_slice(); let unique_bs = v8::ArrayBuffer::new_backing_store_from_boxed_slice(data); assert_eq!(10, unique_bs.byte_length()); assert!(!unique_bs.is_shared()); assert_eq!(unique_bs[0].get(), 0); assert_eq!(unique_bs[9].get(), 9); let shared_bs_1 = unique_bs.make_shared(); assert_eq!(10, shared_bs_1.byte_length()); assert!(!shared_bs_1.is_shared()); assert_eq!(shared_bs_1[0].get(), 0); assert_eq!(shared_bs_1[9].get(), 9); let ab = v8::ArrayBuffer::with_backing_store(scope, &shared_bs_1); let shared_bs_2 = ab.get_backing_store(); assert_eq!(10, shared_bs_2.byte_length()); assert_eq!(shared_bs_2[0].get(), 0); assert_eq!(shared_bs_2[9].get(), 9); // From Vec let data = vec![0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; let unique_bs = v8::ArrayBuffer::new_backing_store_from_vec(data); assert_eq!(10, unique_bs.byte_length()); assert!(!unique_bs.is_shared()); assert_eq!(unique_bs[0].get(), 0); assert_eq!(unique_bs[9].get(), 9); let shared_bs_1 = unique_bs.make_shared(); assert_eq!(10, shared_bs_1.byte_length()); assert!(!shared_bs_1.is_shared()); assert_eq!(shared_bs_1[0].get(), 0); assert_eq!(shared_bs_1[9].get(), 9); let ab = v8::ArrayBuffer::with_backing_store(scope, &shared_bs_1); let shared_bs_2 = ab.get_backing_store(); assert_eq!(10, shared_bs_2.byte_length()); assert_eq!(shared_bs_2[0].get(), 0); assert_eq!(shared_bs_2[9].get(), 9); } } #[test] fn backing_store_segfault() { let _setup_guard = setup(); let array_buffer_allocator = v8::new_default_allocator().make_shared(); let shared_bs = { array_buffer_allocator.assert_use_count_eq(1); let params = v8::Isolate::create_params() .array_buffer_allocator(array_buffer_allocator.clone()); array_buffer_allocator.assert_use_count_eq(2); let isolate = &mut v8::Isolate::new(params); array_buffer_allocator.assert_use_count_eq(2); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let ab = v8::ArrayBuffer::new(scope, 10); let shared_bs = ab.get_backing_store(); array_buffer_allocator.assert_use_count_eq(3); shared_bs }; shared_bs.assert_use_count_eq(1); array_buffer_allocator.assert_use_count_eq(2); drop(array_buffer_allocator); drop(shared_bs); // Error occurred here. } #[test] fn shared_array_buffer_allocator() { let alloc1 = v8::new_default_allocator().make_shared(); alloc1.assert_use_count_eq(1); let alloc2 = alloc1.clone(); alloc1.assert_use_count_eq(2); alloc2.assert_use_count_eq(2); let mut alloc2 = v8::SharedPtr::from(alloc2); alloc1.assert_use_count_eq(2); alloc2.assert_use_count_eq(2); drop(alloc1); alloc2.assert_use_count_eq(1); alloc2.take(); alloc2.assert_use_count_eq(0); } #[test] fn array_buffer_with_shared_backing_store() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let ab1 = v8::ArrayBuffer::new(scope, 42); assert_eq!(42, ab1.byte_length()); let bs1 = ab1.get_backing_store(); assert_eq!(ab1.byte_length(), bs1.byte_length()); bs1.assert_use_count_eq(2); let bs2 = ab1.get_backing_store(); assert_eq!(ab1.byte_length(), bs2.byte_length()); bs1.assert_use_count_eq(3); bs2.assert_use_count_eq(3); let bs3 = ab1.get_backing_store(); assert_eq!(ab1.byte_length(), bs3.byte_length()); bs1.assert_use_count_eq(4); bs2.assert_use_count_eq(4); bs3.assert_use_count_eq(4); drop(bs2); bs1.assert_use_count_eq(3); bs3.assert_use_count_eq(3); drop(bs1); bs3.assert_use_count_eq(2); let ab2 = v8::ArrayBuffer::with_backing_store(scope, &bs3); assert_eq!(ab1.byte_length(), ab2.byte_length()); bs3.assert_use_count_eq(3); let bs4 = ab2.get_backing_store(); assert_eq!(ab1.byte_length(), bs4.byte_length()); bs3.assert_use_count_eq(4); bs4.assert_use_count_eq(4); let bs5 = bs4.clone(); bs3.assert_use_count_eq(5); bs4.assert_use_count_eq(5); bs5.assert_use_count_eq(5); drop(bs3); bs4.assert_use_count_eq(4); bs5.assert_use_count_eq(4); drop(bs4); bs5.assert_use_count_eq(3); } } #[test] fn deref_empty_backing_store() { // Test that the slice that results from derefing a backing store is not // backed by a null pointer, since that would be UB. let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let backing_store = v8::ArrayBuffer::new_backing_store(isolate, 0); let slice: &[std::cell::Cell] = &backing_store; assert!(!slice.as_ptr().is_null()); } fn eval<'s>( scope: &mut v8::HandleScope<'s>, code: &str, ) -> Option> { let scope = &mut v8::EscapableHandleScope::new(scope); let source = v8::String::new(scope, code).unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); let r = script.run(scope); r.map(|v| scope.escape(v)) } #[test] fn external() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let ex1_value = 1usize as *mut std::ffi::c_void; let ex1_handle_a = v8::External::new(scope, ex1_value); assert_eq!(ex1_handle_a.value(), ex1_value); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let ex2_value = 2334567usize as *mut std::ffi::c_void; let ex3_value = -2isize as *mut std::ffi::c_void; let ex2_handle_a = v8::External::new(scope, ex2_value); let ex3_handle_a = v8::External::new(scope, ex3_value); assert!(ex1_handle_a != ex2_handle_a); assert!(ex2_handle_a != ex3_handle_a); assert!(ex3_handle_a != ex1_handle_a); assert_ne!(ex2_value, ex3_value); assert_eq!(ex2_handle_a.value(), ex2_value); assert_eq!(ex3_handle_a.value(), ex3_value); let ex1_key = v8::String::new(scope, "ex1").unwrap().into(); let ex2_key = v8::String::new(scope, "ex2").unwrap().into(); let ex3_key = v8::String::new(scope, "ex3").unwrap().into(); global.set(scope, ex1_key, ex1_handle_a.into()); global.set(scope, ex2_key, ex2_handle_a.into()); global.set(scope, ex3_key, ex3_handle_a.into()); let ex1_handle_b: v8::Local = eval(scope, "ex1").unwrap().try_into().unwrap(); let ex2_handle_b: v8::Local = eval(scope, "ex2").unwrap().try_into().unwrap(); let ex3_handle_b: v8::Local = eval(scope, "ex3").unwrap().try_into().unwrap(); assert!(ex1_handle_b != ex2_handle_b); assert!(ex2_handle_b != ex3_handle_b); assert!(ex3_handle_b != ex1_handle_b); assert!(ex1_handle_a == ex1_handle_b); assert!(ex2_handle_a == ex2_handle_b); assert!(ex3_handle_a == ex3_handle_b); assert_ne!(ex1_handle_a.value(), ex2_value); assert_ne!(ex2_handle_a.value(), ex3_value); assert_ne!(ex3_handle_a.value(), ex1_value); assert_eq!(ex1_handle_a.value(), ex1_value); assert_eq!(ex2_handle_a.value(), ex2_value); assert_eq!(ex3_handle_a.value(), ex3_value); } #[test] fn try_catch() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); { // Error thrown - should be caught. let tc = &mut v8::TryCatch::new(scope); let result = eval(tc, "throw new Error('foo')"); assert!(result.is_none()); assert!(tc.has_caught()); assert!(tc.exception().is_some()); assert!(tc.stack_trace().is_some()); assert!(tc.message().is_some()); assert_eq!( tc.message().unwrap().get(tc).to_rust_string_lossy(tc), "Uncaught Error: foo" ); }; { // No error thrown. let tc = &mut v8::TryCatch::new(scope); let result = eval(tc, "1 + 1"); assert!(result.is_some()); assert!(!tc.has_caught()); assert!(tc.exception().is_none()); assert!(tc.stack_trace().is_none()); assert!(tc.message().is_none()); assert!(tc.rethrow().is_none()); }; { // Rethrow and reset. let tc1 = &mut v8::TryCatch::new(scope); { let tc2 = &mut v8::TryCatch::new(tc1); eval(tc2, "throw 'bar'"); assert!(tc2.has_caught()); assert!(tc2.rethrow().is_some()); tc2.reset(); assert!(!tc2.has_caught()); } assert!(tc1.has_caught()); }; } } #[test] fn try_catch_caught_lifetime() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let (caught_exc, caught_msg) = { let tc = &mut v8::TryCatch::new(scope); // Throw exception. let msg = v8::String::new(tc, "DANG!").unwrap(); let exc = v8::Exception::type_error(tc, msg); tc.throw_exception(exc); // Catch exception. let caught_exc = tc.exception().unwrap(); let caught_msg = tc.message().unwrap(); // Move `caught_exc` and `caught_msg` out of the extent of the TryCatch, // but still within the extent of the enclosing HandleScope. (caught_exc, caught_msg) }; // This should not crash. assert!(caught_exc.to_rust_string_lossy(scope).contains("DANG")); assert!(caught_msg .get(scope) .to_rust_string_lossy(scope) .contains("DANG")); } #[test] fn throw_exception() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); { let tc = &mut v8::TryCatch::new(scope); let exception = v8::String::new(tc, "boom").unwrap(); tc.throw_exception(exception.into()); assert!(tc.has_caught()); assert!(tc .exception() .unwrap() .strict_equals(v8::String::new(tc, "boom").unwrap().into())); }; } } #[test] fn isolate_termination_methods() { let _setup_guard = setup(); let isolate = v8::Isolate::new(Default::default()); let handle = isolate.thread_safe_handle(); drop(isolate); assert!(!handle.terminate_execution()); assert!(!handle.cancel_terminate_execution()); assert!(!handle.is_execution_terminating()); static CALL_COUNT: AtomicUsize = AtomicUsize::new(0); extern "C" fn callback( _isolate: &mut v8::Isolate, data: *mut std::ffi::c_void, ) { assert_eq!(data, std::ptr::null_mut()); CALL_COUNT.fetch_add(1, Ordering::SeqCst); } assert!(!handle.request_interrupt(callback, std::ptr::null_mut())); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 0); } #[test] fn thread_safe_handle_drop_after_isolate() { let _setup_guard = setup(); let isolate = v8::Isolate::new(Default::default()); let handle = isolate.thread_safe_handle(); // We can call it twice. let handle_ = isolate.thread_safe_handle(); // Check that handle is Send and Sync. fn f(_: S) {} f(handle_); // All methods on IsolateHandle should return false after the isolate is // dropped. drop(isolate); assert!(!handle.terminate_execution()); assert!(!handle.cancel_terminate_execution()); assert!(!handle.is_execution_terminating()); static CALL_COUNT: AtomicUsize = AtomicUsize::new(0); extern "C" fn callback( _isolate: &mut v8::Isolate, data: *mut std::ffi::c_void, ) { assert_eq!(data, std::ptr::null_mut()); CALL_COUNT.fetch_add(1, Ordering::SeqCst); } assert!(!handle.request_interrupt(callback, std::ptr::null_mut())); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 0); } // QEMU doesn't like when we spawn threads // This works just fine on real hardware #[cfg(not(target_os = "android"))] #[test] fn terminate_execution() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let (tx, rx) = std::sync::mpsc::channel::(); let handle = isolate.thread_safe_handle(); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let t = std::thread::spawn(move || { // allow deno to boot and run std::thread::sleep(std::time::Duration::from_millis(300)); handle.terminate_execution(); // allow shutdown std::thread::sleep(std::time::Duration::from_millis(200)); // unless reported otherwise the test should fail after this point tx.send(false).ok(); }); // Run an infinite loop, which should be terminated. let source = v8::String::new(scope, "for(;;) {}").unwrap(); let r = v8::Script::compile(scope, source, None); let script = r.unwrap(); let result = script.run(scope); assert!(result.is_none()); // TODO assert_eq!(e.to_string(), "Uncaught Error: execution terminated") let msg = rx.recv().expect("execution should be terminated"); assert!(!msg); // Make sure the isolate unusable again. eval(scope, "1+1").expect("execution should be possible again"); t.join().expect("join t"); } // TODO(ry) This test should use threads #[test] fn request_interrupt_small_scripts() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let handle = isolate.thread_safe_handle(); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); static CALL_COUNT: AtomicUsize = AtomicUsize::new(0); extern "C" fn callback( _isolate: &mut v8::Isolate, data: *mut std::ffi::c_void, ) { assert_eq!(data, std::ptr::null_mut()); CALL_COUNT.fetch_add(1, Ordering::SeqCst); } handle.request_interrupt(callback, std::ptr::null_mut()); eval(scope, "(function(x){return x;})(1);"); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 1); } } #[test] fn add_message_listener() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); isolate.set_capture_stack_trace_for_uncaught_exceptions(true, 32); static CALL_COUNT: AtomicUsize = AtomicUsize::new(0); extern "C" fn check_message_0( message: v8::Local, _exception: v8::Local, ) { let scope = &mut unsafe { v8::CallbackScope::new(message) }; let scope = &mut v8::HandleScope::new(scope); let message_str = message.get(scope); assert_eq!(message_str.to_rust_string_lossy(scope), "Uncaught foo"); assert_eq!(Some(1), message.get_line_number(scope)); assert!(message.get_script_resource_name(scope).is_some()); assert!(message.get_source_line(scope).is_some()); assert_eq!(message.get_start_position(), 0); assert_eq!(message.get_end_position(), 1); assert_eq!(message.get_wasm_function_index(), -1); assert!(message.error_level() >= 0); assert_eq!(message.get_start_column(), 0); assert_eq!(message.get_end_column(), 1); assert!(!message.is_shared_cross_origin()); assert!(!message.is_opaque()); let stack_trace = message.get_stack_trace(scope).unwrap(); assert_eq!(1, stack_trace.get_frame_count()); let frame = stack_trace.get_frame(scope, 0).unwrap(); assert_eq!(1, frame.get_line_number()); assert_eq!(1, frame.get_column()); // Note: V8 flags like --expose_externalize_string and --expose_gc install // scripts of their own and therefore affect the script id that we get. assert_eq!(4, frame.get_script_id()); assert!(frame.get_script_name(scope).is_none()); assert!(frame.get_script_name_or_source_url(scope).is_none()); assert!(frame.get_function_name(scope).is_none()); assert!(!frame.is_eval()); assert!(!frame.is_constructor()); assert!(!frame.is_wasm()); assert!(frame.is_user_javascript()); CALL_COUNT.fetch_add(1, Ordering::SeqCst); } isolate.add_message_listener(check_message_0); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::String::new(scope, "throw 'foo'").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); assert!(script.run(scope).is_none()); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 1); } } fn unexpected_module_resolve_callback<'a>( _context: v8::Local<'a, v8::Context>, _specifier: v8::Local<'a, v8::String>, _import_assertions: v8::Local<'a, v8::FixedArray>, _referrer: v8::Local<'a, v8::Module>, ) -> Option> { unreachable!() } #[test] fn set_host_initialize_import_meta_object_callback() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); static CALL_COUNT: AtomicUsize = AtomicUsize::new(0); extern "C" fn callback( context: v8::Local, _module: v8::Local, meta: v8::Local, ) { CALL_COUNT.fetch_add(1, Ordering::SeqCst); let scope = &mut unsafe { v8::CallbackScope::new(context) }; let scope = &mut v8::HandleScope::new(scope); let key = v8::String::new(scope, "foo").unwrap(); let value = v8::String::new(scope, "bar").unwrap(); meta.create_data_property(scope, key.into(), value.into()); } isolate.set_host_initialize_import_meta_object_callback(callback); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = mock_source( scope, "google.com", "if (import.meta.foo != 'bar') throw 'bad'", ); let module = v8::script_compiler::compile_module(scope, source).unwrap(); let result = module.instantiate_module(scope, unexpected_module_resolve_callback); assert!(result.is_some()); module.evaluate(scope).unwrap(); assert_eq!(v8::ModuleStatus::Evaluated, module.get_status()); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 1); } } #[test] fn script_compile_and_run() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::String::new(scope, "'Hello ' + 13 + 'th planet'").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); source.to_rust_string_lossy(scope); let result = script.run(scope).unwrap(); assert_eq!(result.to_rust_string_lossy(scope), "Hello 13th planet"); } } #[test] fn script_origin() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let resource_name = v8::String::new(scope, "foo.js").unwrap(); let resource_line_offset = 4; let resource_column_offset = 5; let resource_is_shared_cross_origin = true; let script_id = 123; let source_map_url = v8::String::new(scope, "source_map_url").unwrap(); let resource_is_opaque = true; let is_wasm = false; let is_module = false; let script_origin = v8::ScriptOrigin::new( scope, resource_name.into(), resource_line_offset, resource_column_offset, resource_is_shared_cross_origin, script_id, source_map_url.into(), resource_is_opaque, is_wasm, is_module, ); let source = v8::String::new(scope, "1+2").unwrap(); let script = v8::Script::compile(scope, source, Some(&script_origin)).unwrap(); source.to_rust_string_lossy(scope); let _result = script.run(scope).unwrap(); } } #[test] fn get_version() { assert!(v8::V8::get_version().len() > 3); } #[test] fn set_flags_from_command_line() { let r = v8::V8::set_flags_from_command_line(vec![ "binaryname".to_string(), "--log-colour".to_string(), "--should-be-ignored".to_string(), ]); assert_eq!( r, vec!["binaryname".to_string(), "--should-be-ignored".to_string()] ); } #[test] fn inspector_string_view() { let chars = b"Hello world!"; let view = v8::inspector::StringView::from(&chars[..]); assert_eq!(chars.len(), view.into_iter().len()); assert_eq!(chars.len(), view.len()); for (c1, c2) in chars.iter().copied().map(u16::from).zip(view) { assert_eq!(c1, c2); } } #[test] fn inspector_string_buffer() { let chars = b"Hello Venus!"; let mut buf = { let src_view = v8::inspector::StringView::from(&chars[..]); v8::inspector::StringBuffer::create(src_view) }; let view = buf.as_mut().unwrap().string(); assert_eq!(chars.len(), view.into_iter().len()); assert_eq!(chars.len(), view.len()); for (c1, c2) in chars.iter().copied().map(u16::from).zip(view) { assert_eq!(c1, c2); } } #[test] fn test_primitives() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let null = v8::null(scope); assert!(!null.is_undefined()); assert!(null.is_null()); assert!(null.is_null_or_undefined()); let undefined = v8::undefined(scope); assert!(undefined.is_undefined()); assert!(!undefined.is_null()); assert!(undefined.is_null_or_undefined()); let true_ = v8::Boolean::new(scope, true); assert!(true_.is_true()); assert!(!true_.is_undefined()); assert!(!true_.is_null()); assert!(!true_.is_null_or_undefined()); let false_ = v8::Boolean::new(scope, false); assert!(false_.is_false()); assert!(!false_.is_undefined()); assert!(!false_.is_null()); assert!(!false_.is_null_or_undefined()); } } #[test] fn exception() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let msg_in = v8::String::new(scope, "This is a test error").unwrap(); let _exception = v8::Exception::error(scope, msg_in); let _exception = v8::Exception::range_error(scope, msg_in); let _exception = v8::Exception::reference_error(scope, msg_in); let _exception = v8::Exception::syntax_error(scope, msg_in); let exception = v8::Exception::type_error(scope, msg_in); let actual_msg_out = v8::Exception::create_message(scope, exception).get(scope); let expected_msg_out = v8::String::new(scope, "Uncaught TypeError: This is a test error").unwrap(); assert!(actual_msg_out.strict_equals(expected_msg_out.into())); assert!(v8::Exception::get_stack_trace(scope, exception).is_none()); } #[test] fn create_message_argument_lifetimes() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); { let create_message = v8::Function::new( scope, |scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue| { let message = v8::Exception::create_message(scope, args.get(0)); let message_str = message.get(scope); rv.set(message_str.into()) }, ) .unwrap(); let receiver = context.global(scope); let message_str = v8::String::new(scope, "mishap").unwrap(); let exception = v8::Exception::type_error(scope, message_str); let actual = create_message .call(scope, receiver.into(), &[exception]) .unwrap(); let expected = v8::String::new(scope, "Uncaught TypeError: mishap").unwrap(); assert!(actual.strict_equals(expected.into())); } } #[test] fn json() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let json_string = v8::String::new(scope, "{\"a\": 1, \"b\": 2}").unwrap(); let maybe_value = v8::json::parse(scope, json_string); assert!(maybe_value.is_some()); let value = maybe_value.unwrap(); let maybe_stringified = v8::json::stringify(scope, value); assert!(maybe_stringified.is_some()); let stringified = maybe_stringified.unwrap(); let rust_str = stringified.to_rust_string_lossy(scope); assert_eq!("{\"a\":1,\"b\":2}".to_string(), rust_str); } } #[test] fn no_internal_field() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let object = v8::Object::new(scope); let value = v8::Integer::new(scope, 42).into(); assert_eq!(0, object.internal_field_count()); for index in &[0, 1, 1337] { assert!(object.get_internal_field(scope, *index).is_none()); assert!(!object.set_internal_field(*index, value)); assert!(object.get_internal_field(scope, *index).is_none()); } } } #[test] fn object_template() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let object_templ = v8::ObjectTemplate::new(scope); let function_templ = v8::FunctionTemplate::new(scope, fortytwo_callback); let name = v8::String::new(scope, "f").unwrap(); let attr = v8::READ_ONLY | v8::DONT_ENUM | v8::DONT_DELETE; object_templ.set_internal_field_count(1); object_templ.set_with_attr(name.into(), function_templ.into(), attr); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let object = object_templ.new_instance(scope).unwrap(); assert!(!object.is_null_or_undefined()); assert_eq!(1, object.internal_field_count()); let value = object.get_internal_field(scope, 0).unwrap(); assert!(value.is_undefined()); let fortytwo = v8::Integer::new(scope, 42).into(); assert!(object.set_internal_field(0, fortytwo)); let value = object.get_internal_field(scope, 0).unwrap(); assert!(value.same_value(fortytwo)); let name = v8::String::new(scope, "g").unwrap(); context.global(scope).define_own_property( scope, name.into(), object.into(), v8::DONT_ENUM, ); let source = r#" { const d = Object.getOwnPropertyDescriptor(globalThis, "g"); [d.configurable, d.enumerable, d.writable].toString() } "#; let actual = eval(scope, source).unwrap(); let expected = v8::String::new(scope, "true,false,true").unwrap(); assert!(expected.strict_equals(actual)); let actual = eval(scope, "g.f()").unwrap(); let expected = v8::Integer::new(scope, 42); assert!(expected.strict_equals(actual)); let source = r#" { const d = Object.getOwnPropertyDescriptor(g, "f"); [d.configurable, d.enumerable, d.writable].toString() } "#; let actual = eval(scope, source).unwrap(); let expected = v8::String::new(scope, "false,false,false").unwrap(); assert!(expected.strict_equals(actual)); } } #[test] fn object_template_from_function_template() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let function_templ = v8::FunctionTemplate::new(scope, fortytwo_callback); let expected_class_name = v8::String::new(scope, "fortytwo").unwrap(); function_templ.set_class_name(expected_class_name); let object_templ = v8::ObjectTemplate::new_from_template(scope, function_templ); assert_eq!(0, object_templ.internal_field_count()); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let object = object_templ.new_instance(scope).unwrap(); assert!(!object.is_null_or_undefined()); let name = v8::String::new(scope, "g").unwrap(); context.global(scope).set(scope, name.into(), object.into()); let actual_class_name = eval(scope, "g.constructor.name").unwrap(); assert!(expected_class_name.strict_equals(actual_class_name)); } } #[test] fn object_template_immutable_proto() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let object_templ = v8::ObjectTemplate::new(scope); object_templ.set_immutable_proto(); let context = v8::Context::new_from_template(scope, object_templ); let scope = &mut v8::ContextScope::new(scope, context); let source = r#" { let r = 0; try { Object.setPrototypeOf(globalThis, {}); } catch { r = 42; } String(r); } "#; let actual = eval(scope, source).unwrap(); let expected = v8::String::new(scope, "42").unwrap(); assert!(actual == expected); } } #[test] fn function_template_signature() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let templ0 = v8::FunctionTemplate::new(scope, fortytwo_callback); let signature = v8::Signature::new(scope, templ0); let templ1 = v8::FunctionTemplate::builder(fortytwo_callback) .signature(signature) .build(scope); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let scope = &mut v8::TryCatch::new(scope); let global = context.global(scope); let name = v8::String::new(scope, "C").unwrap(); let value = templ0.get_function(scope).unwrap(); global.set(scope, name.into(), value.into()).unwrap(); let name = v8::String::new(scope, "f").unwrap(); let value = templ1.get_function(scope).unwrap(); global.set(scope, name.into(), value.into()).unwrap(); assert!(eval(scope, "f.call(new C)").is_some()); assert!(eval(scope, "f.call(new Object)").is_none()); assert!(scope.has_caught()); assert!(scope .exception() .unwrap() .to_rust_string_lossy(scope) .contains("Illegal invocation")); } } #[test] fn function_template_prototype() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let scope = &mut v8::TryCatch::new(scope); let function_templ = v8::FunctionTemplate::new(scope, fortytwo_callback); let prototype_templ = function_templ.prototype_template(scope); let amount_name = v8::String::new(scope, "amount").unwrap(); let value = v8::Number::new(scope, 1.0); let second_value = v8::Number::new(scope, 2.0); let third_value = v8::Number::new(scope, 3.0); prototype_templ.set(amount_name.into(), value.into()); let function = function_templ.get_function(scope).unwrap(); function.new_instance(scope, &[]); let object1 = function.new_instance(scope, &[]).unwrap(); assert!(!object1.is_null_or_undefined()); let name = v8::String::new(scope, "ob1").unwrap(); context .global(scope) .set(scope, name.into(), object1.into()); let actual_amount = eval(scope, "ob1.amount").unwrap().to_number(scope).unwrap(); dbg!("{}", actual_amount.number_value(scope).unwrap()); assert!(value.eq(&actual_amount)); let object2 = function.new_instance(scope, &[]).unwrap(); assert!(!object2.is_null_or_undefined()); let name = v8::String::new(scope, "ob2").unwrap(); context .global(scope) .set(scope, name.into(), object2.into()); let actual_amount = eval(scope, "ob2.amount").unwrap().to_number(scope).unwrap(); dbg!("{}", actual_amount.number_value(scope).unwrap()); assert!(value.eq(&actual_amount)); eval(scope, "ob1.amount = 2").unwrap(); let actual_amount = eval(scope, "ob1.amount").unwrap().to_number(scope).unwrap(); dbg!("{}", actual_amount.number_value(scope).unwrap()); assert!(second_value.eq(&actual_amount)); // We need to get the prototype of the object to change it, it is not the same object as the prototype template! object2 .get_prototype(scope) .unwrap() .to_object(scope) .unwrap() .set(scope, amount_name.into(), third_value.into()); let actual_amount = eval(scope, "ob1.amount").unwrap().to_number(scope).unwrap(); dbg!("{}", actual_amount.number_value(scope).unwrap()); assert!(second_value.eq(&actual_amount)); let actual_amount = eval(scope, "ob2.amount").unwrap().to_number(scope).unwrap(); dbg!("{}", actual_amount.number_value(scope).unwrap()); assert!(third_value.eq(&actual_amount)); } } #[test] fn instance_template_with_internal_field() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); pub fn constructor_callback( scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut retval: v8::ReturnValue, ) { let this = args.this(); assert!(this.set_internal_field(0, v8::Integer::new(scope, 42).into())); retval.set(this.into()) } let function_templ = v8::FunctionTemplate::new(scope, constructor_callback); let instance_templ = function_templ.instance_template(scope); instance_templ.set_internal_field_count(1); let name = v8::String::new(scope, "WithInternalField").unwrap(); let val = function_templ.get_function(scope).unwrap(); context.global(scope).set(scope, name.into(), val.into()); let new_instance = eval(scope, "new WithInternalField()").unwrap(); let internal_field = new_instance .to_object(scope) .unwrap() .get_internal_field(scope, 0) .unwrap(); assert_eq!(internal_field.integer_value(scope).unwrap(), 42); } #[test] fn object_template_set_accessor() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); { let getter = |scope: &mut v8::HandleScope, key: v8::Local, args: v8::PropertyCallbackArguments, mut rv: v8::ReturnValue| { let this = args.this(); let expected_key = v8::String::new(scope, "key").unwrap(); assert!(key.strict_equals(expected_key.into())); rv.set(this.get_internal_field(scope, 0).unwrap()); }; let setter = |scope: &mut v8::HandleScope, key: v8::Local, value: v8::Local, args: v8::PropertyCallbackArguments| { let this = args.this(); let expected_key = v8::String::new(scope, "key").unwrap(); assert!(key.strict_equals(expected_key.into())); assert!(value.is_int32()); assert!(this.set_internal_field(0, value)); }; let key = v8::String::new(scope, "key").unwrap(); let name = v8::String::new(scope, "obj").unwrap(); // Lone getter let templ = v8::ObjectTemplate::new(scope); templ.set_internal_field_count(1); templ.set_accessor(key.into(), getter); let obj = templ.new_instance(scope).unwrap(); let int = v8::Integer::new(scope, 42); obj.set_internal_field(0, int.into()); scope.get_current_context().global(scope).set( scope, name.into(), obj.into(), ); assert!(eval(scope, "obj.key").unwrap().strict_equals(int.into())); // Getter + setter let templ = v8::ObjectTemplate::new(scope); templ.set_internal_field_count(1); templ.set_accessor_with_setter(key.into(), getter, setter); let obj = templ.new_instance(scope).unwrap(); obj.set_internal_field(0, int.into()); scope.get_current_context().global(scope).set( scope, name.into(), obj.into(), ); let new_int = v8::Integer::new(scope, 9); eval(scope, "obj.key = 9"); assert!(obj .get_internal_field(scope, 0) .unwrap() .strict_equals(new_int.into())); // Falls back on standard setter assert!(eval(scope, "obj.key2 = null; obj.key2").unwrap().is_null()); // Accessor property let getter = v8::FunctionTemplate::new(scope, fortytwo_callback); fn property_setter( scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, _: v8::ReturnValue, ) { let this = args.this(); let ret = v8::Integer::new(scope, 69); assert!(this.set_internal_field(0, ret.into())); } let setter = v8::FunctionTemplate::new(scope, property_setter); let templ = v8::ObjectTemplate::new(scope); templ.set_internal_field_count(1); // Getter let key = v8::String::new(scope, "key1").unwrap(); templ.set_accessor_property( key.into(), Some(getter), None, v8::PropertyAttribute::default(), ); // Setter let key = v8::String::new(scope, "key2").unwrap(); templ.set_accessor_property( key.into(), None, Some(setter), v8::PropertyAttribute::default(), ); let obj = templ.new_instance(scope).unwrap(); let int = v8::Integer::new(scope, 42); obj.set_internal_field(0, int.into()); scope.get_current_context().global(scope).set( scope, name.into(), obj.into(), ); assert!(eval(scope, "obj.key1").unwrap().strict_equals(int.into())); assert!(eval(scope, "obj.key2 = 123; obj.key2") .unwrap() .is_undefined()); } } #[test] fn object() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let null: v8::Local = v8::null(scope).into(); let n1: v8::Local = v8::String::new(scope, "a").unwrap().into(); let n2: v8::Local = v8::String::new(scope, "b").unwrap().into(); let p = v8::String::new(scope, "p").unwrap().into(); let v1: v8::Local = v8::Number::new(scope, 1.0).into(); let v2: v8::Local = v8::Number::new(scope, 2.0).into(); let object = v8::Object::with_prototype_and_properties( scope, null, &[n1, n2], &[v1, v2], ); assert!(!object.is_null_or_undefined()); let lhs = object.get_creation_context(scope).unwrap().global(scope); let rhs = context.global(scope); assert!(lhs.strict_equals(rhs.into())); let object_ = v8::Object::new(scope); assert!(!object_.is_null_or_undefined()); let id = object_.get_identity_hash(); assert_eq!(id, object_.get_hash()); assert_ne!(id, v8::Object::new(scope).get_hash()); assert!(object.has(scope, n1.into()).unwrap()); assert!(object.has_own_property(scope, n1).unwrap()); let n_unused = v8::String::new(scope, "unused").unwrap(); assert!(!object.has(scope, n_unused.into()).unwrap()); assert!(!object.has_own_property(scope, n_unused.into()).unwrap()); assert!(object.delete(scope, n1.into()).unwrap()); assert!(!object.has(scope, n1.into()).unwrap()); assert!(!object.has_own_property(scope, n1).unwrap()); let global = context.global(scope); let object_string = v8::String::new(scope, "o").unwrap().into(); global.set(scope, object_string, object.into()); assert!(eval(scope, "Object.isExtensible(o)").unwrap().is_true()); assert!(eval(scope, "Object.isSealed(o)").unwrap().is_false()); assert!(eval(scope, "Object.isFrozen(o)").unwrap().is_false()); assert!(object .set_integrity_level(scope, v8::IntegrityLevel::Sealed) .unwrap()); assert!(eval(scope, "Object.isExtensible(o)").unwrap().is_false()); assert!(eval(scope, "Object.isSealed(o)").unwrap().is_true()); assert!(eval(scope, "Object.isFrozen(o)").unwrap().is_false()); // Creating new properties is not allowed anymore eval(scope, "o.p = true").unwrap(); assert!(!object.has(scope, p).unwrap()); // Deleting properties is not allowed anymore eval(scope, "delete o.b").unwrap(); assert!(object.has(scope, n2.into()).unwrap()); // But we can still write new values. assert!(eval(scope, "o.b = true; o.b").unwrap().is_true()); assert!(object .set_integrity_level(scope, v8::IntegrityLevel::Frozen) .unwrap()); assert!(eval(scope, "Object.isExtensible(o)").unwrap().is_false()); assert!(eval(scope, "Object.isSealed(o)").unwrap().is_true()); assert!(eval(scope, "Object.isFrozen(o)").unwrap().is_true()); // Creating new properties is not allowed anymore eval(scope, "o.p = true").unwrap(); assert!(!object.has(scope, p).unwrap()); // Deleting properties is not allowed anymore eval(scope, "delete o.b").unwrap(); assert!(object.has(scope, n2.into()).unwrap()); // And we can also not write new values assert!(eval(scope, "o.b = false; o.b").unwrap().is_true()); } } #[test] fn map() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let map = v8::Map::new(scope); assert_eq!(map.size(), 0); let undefined = v8::undefined(scope).into(); { let key = v8::Object::new(scope).into(); let value = v8::Integer::new(scope, 1337).into(); assert_eq!(map.has(scope, key), Some(false)); assert_eq!(map.get(scope, key), Some(undefined)); assert_eq!(map.set(scope, key, value), Some(map)); assert_eq!(map.has(scope, key), Some(true)); assert_eq!(map.size(), 1); assert_eq!(map.get(scope, key), Some(value)); } map.clear(); assert_eq!(map.size(), 0); { let key = v8::String::new(scope, "key").unwrap().into(); let value = v8::Integer::new(scope, 42).into(); assert_eq!(map.delete(scope, key), Some(false)); map.set(scope, key, value); assert_eq!(map.size(), 1); assert_eq!(map.delete(scope, key), Some(true)); assert_eq!(map.size(), 0); } } } #[test] fn array() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let s1 = v8::String::new(scope, "a").unwrap(); let s2 = v8::String::new(scope, "b").unwrap(); let array = v8::Array::new(scope, 2); assert_eq!(array.length(), 2); let lhs = array.get_creation_context(scope).unwrap().global(scope); let rhs = context.global(scope); assert!(lhs.strict_equals(rhs.into())); array.set_index(scope, 0, s1.into()); array.set_index(scope, 1, s2.into()); let maybe_v1 = array.get_index(scope, 0); assert!(maybe_v1.is_some()); assert!(maybe_v1.unwrap().same_value(s1.into())); let maybe_v2 = array.get_index(scope, 1); assert!(maybe_v2.is_some()); assert!(maybe_v2.unwrap().same_value(s2.into())); let array = v8::Array::new_with_elements(scope, &[]); assert_eq!(array.length(), 0); let array = v8::Array::new_with_elements(scope, &[s1.into(), s2.into()]); assert_eq!(array.length(), 2); let maybe_v1 = array.get_index(scope, 0); assert!(maybe_v1.is_some()); assert!(maybe_v1.unwrap().same_value(s1.into())); let maybe_v2 = array.get_index(scope, 1); assert!(maybe_v2.is_some()); assert!(maybe_v2.unwrap().same_value(s2.into())); assert!(array.has_index(scope, 1).unwrap()); assert!(array.delete_index(scope, 1).unwrap()); assert!(!array.has_index(scope, 1).unwrap()); } } #[test] fn create_data_property() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); eval(scope, "var a = {};"); let key = v8::String::new(scope, "a").unwrap(); let obj = context.global(scope).get(scope, key.into()).unwrap(); assert!(obj.is_object()); let obj = obj.to_object(scope).unwrap(); let key = v8::String::new(scope, "foo").unwrap(); let value = v8::String::new(scope, "bar").unwrap(); assert!(obj .create_data_property(scope, key.into(), value.into()) .unwrap()); let actual = obj.get(scope, key.into()).unwrap(); assert!(value.strict_equals(actual)); let key2 = v8::String::new(scope, "foo2").unwrap(); assert!(obj.set(scope, key2.into(), value.into()).unwrap()); let actual = obj.get(scope, key2.into()).unwrap(); assert!(value.strict_equals(actual)); } } #[test] fn object_set_accessor() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); { static CALL_COUNT: AtomicUsize = AtomicUsize::new(0); let getter = |scope: &mut v8::HandleScope, key: v8::Local, args: v8::PropertyCallbackArguments, mut rv: v8::ReturnValue| { let this = args.this(); let expected_key = v8::String::new(scope, "getter_key").unwrap(); assert!(key.strict_equals(expected_key.into())); let int_key = v8::String::new(scope, "int_key").unwrap(); let int_value = this.get(scope, int_key.into()).unwrap(); let int_value = v8::Local::::try_from(int_value).unwrap(); assert_eq!(int_value.value(), 42); let s = v8::String::new(scope, "hello").unwrap(); assert!(rv.get(scope).is_undefined()); rv.set(s.into()); CALL_COUNT.fetch_add(1, Ordering::SeqCst); }; let obj = v8::Object::new(scope); let getter_key = v8::String::new(scope, "getter_key").unwrap(); obj.set_accessor(scope, getter_key.into(), getter); let int_key = v8::String::new(scope, "int_key").unwrap(); let int_value = v8::Integer::new(scope, 42); obj.set(scope, int_key.into(), int_value.into()); let obj_name = v8::String::new(scope, "obj").unwrap(); context .global(scope) .set(scope, obj_name.into(), obj.into()); let actual = eval(scope, "obj.getter_key").unwrap(); let expected = v8::String::new(scope, "hello").unwrap(); assert!(actual.strict_equals(expected.into())); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 1); } } #[test] fn object_set_accessor_with_setter() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); { static CALL_COUNT: AtomicUsize = AtomicUsize::new(0); let getter = |scope: &mut v8::HandleScope, key: v8::Local, args: v8::PropertyCallbackArguments, mut rv: v8::ReturnValue| { let this = args.this(); let expected_key = v8::String::new(scope, "getter_setter_key").unwrap(); assert!(key.strict_equals(expected_key.into())); let int_key = v8::String::new(scope, "int_key").unwrap(); let int_value = this.get(scope, int_key.into()).unwrap(); let int_value = v8::Local::::try_from(int_value).unwrap(); assert_eq!(int_value.value(), 42); let s = v8::String::new(scope, "hello").unwrap(); assert!(rv.get(scope).is_undefined()); rv.set(s.into()); CALL_COUNT.fetch_add(1, Ordering::SeqCst); }; let setter = |scope: &mut v8::HandleScope, key: v8::Local, value: v8::Local, args: v8::PropertyCallbackArguments| { println!("setter called"); let this = args.this(); let expected_key = v8::String::new(scope, "getter_setter_key").unwrap(); assert!(key.strict_equals(expected_key.into())); let int_key = v8::String::new(scope, "int_key").unwrap(); let int_value = this.get(scope, int_key.into()).unwrap(); let int_value = v8::Local::::try_from(int_value).unwrap(); assert_eq!(int_value.value(), 42); let new_value = v8::Local::::try_from(value).unwrap(); this.set(scope, int_key.into(), new_value.into()); CALL_COUNT.fetch_add(1, Ordering::SeqCst); }; let obj = v8::Object::new(scope); let getter_setter_key = v8::String::new(scope, "getter_setter_key").unwrap(); obj.set_accessor_with_setter( scope, getter_setter_key.into(), getter, setter, ); let int_key = v8::String::new(scope, "int_key").unwrap(); let int_value = v8::Integer::new(scope, 42); obj.set(scope, int_key.into(), int_value.into()); let obj_name = v8::String::new(scope, "obj").unwrap(); context .global(scope) .set(scope, obj_name.into(), obj.into()); let actual = eval(scope, "obj.getter_setter_key").unwrap(); let expected = v8::String::new(scope, "hello").unwrap(); assert!(actual.strict_equals(expected.into())); eval(scope, "obj.getter_setter_key = 123").unwrap(); assert_eq!( obj .get(scope, int_key.into()) .unwrap() .to_integer(scope) .unwrap() .value(), 123 ); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 2); } } #[test] fn promise_resolved() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let maybe_resolver = v8::PromiseResolver::new(scope); assert!(maybe_resolver.is_some()); let resolver = maybe_resolver.unwrap(); let promise = resolver.get_promise(scope); assert!(!promise.has_handler()); assert_eq!(promise.state(), v8::PromiseState::Pending); let value = v8::String::new(scope, "test").unwrap(); resolver.resolve(scope, value.into()); assert_eq!(promise.state(), v8::PromiseState::Fulfilled); let result = promise.result(scope); assert_eq!(result.to_rust_string_lossy(scope), "test".to_string()); // Resolve again with different value, since promise is already in // `Fulfilled` state it should be ignored. let value = v8::String::new(scope, "test2").unwrap(); resolver.resolve(scope, value.into()); let result = promise.result(scope); assert_eq!(result.to_rust_string_lossy(scope), "test".to_string()); } } #[test] fn promise_rejected() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let maybe_resolver = v8::PromiseResolver::new(scope); assert!(maybe_resolver.is_some()); let resolver = maybe_resolver.unwrap(); let promise = resolver.get_promise(scope); assert!(!promise.has_handler()); assert_eq!(promise.state(), v8::PromiseState::Pending); let value = v8::String::new(scope, "test").unwrap(); let rejected = resolver.reject(scope, value.into()); assert!(rejected.unwrap()); assert_eq!(promise.state(), v8::PromiseState::Rejected); let result = promise.result(scope); assert_eq!(result.to_rust_string_lossy(scope), "test".to_string()); // Reject again with different value, since promise is already in `Rejected` // state it should be ignored. let value = v8::String::new(scope, "test2").unwrap(); resolver.reject(scope, value.into()); let result = promise.result(scope); assert_eq!(result.to_rust_string_lossy(scope), "test".to_string()); } } #[test] fn proxy() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let target = v8::Object::new(scope); let handler = v8::Object::new(scope); let maybe_proxy = v8::Proxy::new(scope, target, handler); assert!(maybe_proxy.is_some()); let proxy = maybe_proxy.unwrap(); assert!(target == proxy.get_target(scope)); assert!(handler == proxy.get_handler(scope)); assert!(!proxy.is_revoked()); proxy.revoke(); assert!(proxy.is_revoked()); } } fn fn_callback_external( scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { assert_eq!(args.length(), 0); let data = args.data().unwrap(); let external = v8::Local::::try_from(data).unwrap(); let data = unsafe { std::slice::from_raw_parts(external.value() as *mut u8, 5) }; assert_eq!(&[0, 1, 2, 3, 4], data); let s = v8::String::new(scope, "Hello callback!").unwrap(); assert!(rv.get(scope).is_undefined()); rv.set(s.into()); } fn fn_callback( scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { assert_eq!(args.length(), 0); let s = v8::String::new(scope, "Hello callback!").unwrap(); assert!(rv.get(scope).is_undefined()); rv.set(s.into()); } fn fn_callback_new( scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { assert_eq!(args.length(), 0); assert!(args.new_target().is_object()); let recv = args.this(); let key = v8::String::new(scope, "works").unwrap(); let value = v8::Boolean::new(scope, true); assert!(recv.set(scope, key.into(), value.into()).unwrap()); assert!(rv.get(scope).is_undefined()); rv.set(recv.into()); } fn fn_callback2( scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { assert_eq!(args.length(), 2); let arg1_val = v8::String::new(scope, "arg1").unwrap(); let arg1 = args.get(0); assert!(arg1.is_string()); assert!(arg1.strict_equals(arg1_val.into())); let arg2_val = v8::Integer::new(scope, 2); let arg2 = args.get(1); assert!(arg2.is_number()); assert!(arg2.strict_equals(arg2_val.into())); let s = v8::String::new(scope, "Hello callback!").unwrap(); assert!(rv.get(scope).is_undefined()); rv.set(s.into()); } fn fortytwo_callback( _: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { rv.set_int32(42); } fn data_is_true_callback( _scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, _rv: v8::ReturnValue, ) { let data = args.data(); assert!(data.is_some()); let data = data.unwrap(); assert!(data.is_true()); } fn nested_builder<'a>( scope: &mut v8::HandleScope<'a>, args: v8::FunctionCallbackArguments<'a>, _: v8::ReturnValue, ) { let arg0 = args.get(0); v8::Function::builder( |_: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, _: v8::ReturnValue| {}, ) .data(arg0) .build(scope); } #[test] fn function_builder_raw() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let recv: v8::Local = global.into(); extern "C" fn callback(info: *const v8::FunctionCallbackInfo) { let scope = unsafe { &mut v8::CallbackScope::new(&*info) }; let args = unsafe { v8::FunctionCallbackArguments::from_function_callback_info(info) }; assert!(args.length() == 1); assert!(args.get(0).is_string()); let mut rv = unsafe { v8::ReturnValue::from_function_callback_info(info) }; rv.set( v8::String::new(scope, "Hello from function!") .unwrap() .into(), ); } let func = v8::Function::new_raw(scope, callback).unwrap(); let arg0 = v8::String::new(scope, "Hello").unwrap(); let value = func.call(scope, recv, &[arg0.into()]).unwrap(); assert!(value.is_string()); assert_eq!(value.to_rust_string_lossy(scope), "Hello from function!"); } } #[test] fn return_value() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let recv: v8::Local = global.into(); // set_bool { let template = v8::FunctionTemplate::new( scope, |scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue| { assert_eq!(args.length(), 0); assert!(rv.get(scope).is_undefined()); rv.set_bool(false); }, ); let function = template .get_function(scope) .expect("Unable to create function"); let value = function .call(scope, recv, &[]) .expect("Function call failed"); assert!(value.is_boolean()); assert!(!value.is_true()); } // set_int32 { let template = v8::FunctionTemplate::new( scope, |scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue| { assert_eq!(args.length(), 0); assert!(rv.get(scope).is_undefined()); rv.set_int32(69); }, ); let function = template .get_function(scope) .expect("Unable to create function"); let value = function .call(scope, recv, &[]) .expect("Function call failed"); assert!(value.is_int32()); assert_eq!(value.int32_value(scope).unwrap(), 69); } // set_uint32 { let template = v8::FunctionTemplate::new( scope, |scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue| { assert_eq!(args.length(), 0); assert!(rv.get(scope).is_undefined()); rv.set_uint32(69); }, ); let function = template .get_function(scope) .expect("Unable to create function"); let value = function .call(scope, recv, &[]) .expect("Function call failed"); assert!(value.is_uint32()); assert_eq!(value.uint32_value(scope).unwrap(), 69); } // set_null { let template = v8::FunctionTemplate::new( scope, |scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue| { assert_eq!(args.length(), 0); assert!(rv.get(scope).is_undefined()); rv.set_null(); }, ); let function = template .get_function(scope) .expect("Unable to create function"); let value = function .call(scope, recv, &[]) .expect("Function call failed"); assert!(value.is_null()); } // set_undefined { let template = v8::FunctionTemplate::new( scope, |scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue| { assert_eq!(args.length(), 0); assert!(rv.get(scope).is_undefined()); rv.set_undefined(); }, ); let function = template .get_function(scope) .expect("Unable to create function"); let value = function .call(scope, recv, &[]) .expect("Function call failed"); assert!(value.is_undefined()); } // set_double { let template = v8::FunctionTemplate::new( scope, |scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue| { assert_eq!(args.length(), 0); assert!(rv.get(scope).is_undefined()); rv.set_double(69.420); }, ); let function = template .get_function(scope) .expect("Unable to create function"); let value = function .call(scope, recv, &[]) .expect("Function call failed"); assert!(value.is_number()); assert_eq!(value.number_value(scope).unwrap(), 69.420); } // set_empty_string { let template = v8::FunctionTemplate::new( scope, |scope: &mut v8::HandleScope, args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue| { assert_eq!(args.length(), 0); assert!(rv.get(scope).is_undefined()); rv.set_empty_string(); }, ); let function = template .get_function(scope) .expect("Unable to create function"); let value = function .call(scope, recv, &[]) .expect("Function call failed"); assert!(value.is_string()); assert_eq!(value.to_rust_string_lossy(scope), ""); } } } #[test] fn function() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let recv: v8::Local = global.into(); // Just check that this compiles. v8::Function::builder(nested_builder); // create function using template let fn_template = v8::FunctionTemplate::new(scope, fn_callback); let function = fn_template .get_function(scope) .expect("Unable to create function"); let lhs = function.get_creation_context(scope).unwrap().global(scope); let rhs = context.global(scope); assert!(lhs.strict_equals(rhs.into())); let value = function .call(scope, recv, &[]) .expect("Function call failed"); let value_str = value.to_string(scope).unwrap(); let rust_str = value_str.to_rust_string_lossy(scope); assert_eq!(rust_str, "Hello callback!".to_string()); // create function using template from a raw ptr let fn_template = v8::FunctionTemplate::new_raw(scope, fn_callback.map_fn_to()); let function = fn_template .get_function(scope) .expect("Unable to create function"); let lhs = function.get_creation_context(scope).unwrap().global(scope); let rhs = context.global(scope); assert!(lhs.strict_equals(rhs.into())); let value = function .call(scope, recv, &[]) .expect("Function call failed"); let value_str = value.to_string(scope).unwrap(); let rust_str = value_str.to_rust_string_lossy(scope); assert_eq!(rust_str, "Hello callback!".to_string()); // create function without a template let function = v8::Function::new(scope, fn_callback2) .expect("Unable to create function"); let arg1 = v8::String::new(scope, "arg1").unwrap(); let arg2 = v8::Integer::new(scope, 2); let value = function .call(scope, recv, &[arg1.into(), arg2.into()]) .unwrap(); let value_str = value.to_string(scope).unwrap(); let rust_str = value_str.to_rust_string_lossy(scope); assert_eq!(rust_str, "Hello callback!".to_string()); // create function without a template from a raw ptr let function = v8::Function::new_raw(scope, fn_callback2.map_fn_to()) .expect("Unable to create function"); let arg1 = v8::String::new(scope, "arg1").unwrap(); let arg2 = v8::Integer::new(scope, 2); let value = function .call(scope, recv, &[arg1.into(), arg2.into()]) .unwrap(); let value_str = value.to_string(scope).unwrap(); let rust_str = value_str.to_rust_string_lossy(scope); assert_eq!(rust_str, "Hello callback!".to_string()); // create a function with associated data let true_data = v8::Boolean::new(scope, true); let function = v8::Function::builder(data_is_true_callback) .data(true_data.into()) .build(scope) .expect("Unable to create function with data"); let value = function .call(scope, recv, &[]) .expect("Function call failed"); assert!(value.is_undefined()); // create a function with associated data from a raw ptr let true_data = v8::Boolean::new(scope, true); let function = v8::Function::builder_raw(data_is_true_callback.map_fn_to()) .data(true_data.into()) .build(scope) .expect("Unable to create function with data"); let value = function .call(scope, recv, &[]) .expect("Function call failed"); assert!(value.is_undefined()); // create a prototype-less function that throws on new let function = v8::Function::builder(fn_callback) .length(42) .constructor_behavior(v8::ConstructorBehavior::Throw) .build(scope) .unwrap(); let name = v8::String::new(scope, "f").unwrap(); global.set(scope, name.into(), function.into()).unwrap(); let result = eval(scope, "f.length").unwrap(); assert_eq!(42, result.integer_value(scope).unwrap()); let result = eval(scope, "f.prototype").unwrap(); assert!(result.is_undefined()); assert!(eval(scope, "new f()").is_none()); // throws let function = v8::Function::builder(fn_callback_new).build(scope).unwrap(); let name = v8::String::new(scope, "f2").unwrap(); global.set(scope, name.into(), function.into()).unwrap(); let f2: v8::Local = eval(scope, "new f2()").unwrap().try_into().unwrap(); let key = v8::String::new(scope, "works").unwrap(); let value = f2.get(scope, key.into()).unwrap(); assert!(value.is_boolean()); assert!(value.boolean_value(scope)); } } #[test] fn function_column_and_line_numbers() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = mock_source( scope, "google.com", r#"export function f(a, b) { return a; } export function anotherFunctionG(a, b) { return b; }"#, ); let module = v8::script_compiler::compile_module(scope, source).unwrap(); let result = module.instantiate_module(scope, unexpected_module_resolve_callback); assert!(result.is_some()); module.evaluate(scope).unwrap(); assert_eq!(v8::ModuleStatus::Evaluated, module.get_status()); let namespace = module.get_module_namespace(); assert!(namespace.is_module_namespace_object()); let namespace_obj = namespace.to_object(scope).unwrap(); let f_str = v8::String::new(scope, "f").unwrap(); let f_function_obj: v8::Local = namespace_obj .get(scope, f_str.into()) .unwrap() .try_into() .unwrap(); // The column number is zero-indexed and indicates the position of the end of the name. assert_eq!(f_function_obj.get_script_column_number(), Some(17)); // The line number is zero-indexed as well. assert_eq!(f_function_obj.get_script_line_number(), Some(0)); let g_str = v8::String::new(scope, "anotherFunctionG").unwrap(); let g_function_obj: v8::Local = namespace_obj .get(scope, g_str.into()) .unwrap() .try_into() .unwrap(); assert_eq!(g_function_obj.get_script_column_number(), Some(32)); assert_eq!(g_function_obj.get_script_line_number(), Some(4)); let fn_template = v8::FunctionTemplate::new(scope, fn_callback); let function = fn_template .get_function(scope) .expect("Unable to create function"); assert_eq!(function.get_script_column_number(), None); assert_eq!(function.get_script_line_number(), None); } } #[test] fn constructor() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let array_name = v8::String::new(scope, "Array").unwrap(); let array_constructor = global.get(scope, array_name.into()).unwrap(); let array_constructor = v8::Local::::try_from(array_constructor).unwrap(); let array = array_constructor.new_instance(scope, &[]).unwrap(); v8::Local::::try_from(array).unwrap(); } } extern "C" fn promise_reject_callback(msg: v8::PromiseRejectMessage) { let scope = &mut unsafe { v8::CallbackScope::new(&msg) }; let event = msg.get_event(); assert_eq!(event, v8::PromiseRejectEvent::PromiseRejectWithNoHandler); let promise = msg.get_promise(); assert_eq!(promise.state(), v8::PromiseState::Rejected); let value = msg.get_value().unwrap(); { let scope = &mut v8::HandleScope::new(scope); let value_str = value.to_rust_string_lossy(scope); assert_eq!(value_str, "promise rejected".to_string()); } } #[test] fn set_promise_reject_callback() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); isolate.set_promise_reject_callback(promise_reject_callback); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let resolver = v8::PromiseResolver::new(scope).unwrap(); let value = v8::String::new(scope, "promise rejected").unwrap(); resolver.reject(scope, value.into()); } } #[test] fn promise_reject_callback_no_value() { extern "C" fn promise_reject_callback(m: v8::PromiseRejectMessage) { use v8::PromiseRejectEvent::*; let value = m.get_value(); match m.get_event() { PromiseHandlerAddedAfterReject => assert!(value.is_none()), PromiseRejectWithNoHandler => assert!(value.is_some()), _ => unreachable!(), }; } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); isolate.set_promise_reject_callback(promise_reject_callback); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = r#" function kaboom(resolve, reject) { throw new Error("kaboom"); } new Promise(kaboom).then(_ => {}); "#; eval(scope, source).unwrap(); } } #[test] fn promise_hook() { extern "C" fn hook( type_: v8::PromiseHookType, promise: v8::Local, _parent: v8::Local, ) { // Check that PromiseHookType implements Clone and PartialEq. #[allow(clippy::clone_on_copy)] if type_.clone() == v8::PromiseHookType::Init {} let scope = &mut unsafe { v8::CallbackScope::new(promise) }; let context = promise.get_creation_context(scope).unwrap(); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let name = v8::String::new(scope, "hook").unwrap(); let func = global.get(scope, name.into()).unwrap(); let func = v8::Local::::try_from(func).unwrap(); let args = &[v8::Integer::new(scope, type_ as i32).into(), promise.into()]; func.call(scope, global.into(), args).unwrap(); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); isolate.set_promise_hook(hook); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = r#" var promises = new Set(); function hook(type, promise) { if (type === /* Init */ 0) promises.add(promise); if (type === /* Resolve */ 1) promises.delete(promise); } function expect(expected, actual = promises.size) { if (actual !== expected) throw `expected ${expected}, actual ${actual}`; } expect(0); new Promise(resolve => { expect(1); resolve(); expect(0); }); expect(0); new Promise(() => {}); expect(1); promises.values().next().value "#; let promise = eval(scope, source).unwrap(); let promise = v8::Local::::try_from(promise).unwrap(); assert!(!promise.has_handler()); assert_eq!(promise.state(), v8::PromiseState::Pending); } } #[test] fn context_get_extras_binding_object() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let extras_binding = context.get_extras_binding_object(scope); assert!(extras_binding.is_object()); } } #[test] fn context_promise_hooks() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let init_hook = v8::Local::::try_from( eval( scope, r#" globalThis.promises = new Set(); function initHook(promise) { promises.add(promise); } initHook; "#, ) .unwrap(), ) .unwrap(); let before_hook = v8::Local::::try_from( eval( scope, r#" globalThis.promiseStack = []; function beforeHook(promise) { promiseStack.push(promise); } beforeHook; "#, ) .unwrap(), ) .unwrap(); let after_hook = v8::Local::::try_from( eval( scope, r#" function afterHook(promise) { const it = promiseStack.pop(); if (it !== promise) throw new Error("unexpected promise"); } afterHook; "#, ) .unwrap(), ) .unwrap(); let resolve_hook = v8::Local::::try_from( eval( scope, r#" function resolveHook(promise) { promises.delete(promise); } resolveHook; "#, ) .unwrap(), ) .unwrap(); context.set_promise_hooks(init_hook, before_hook, after_hook, resolve_hook); let source = r#" function expect(expected, actual = promises.size) { if (actual !== expected) throw `expected ${expected}, actual ${actual}`; } expect(0); var p = new Promise(resolve => { expect(1); resolve(); expect(0); }); expect(0); new Promise(() => {}); expect(1); expect(0, promiseStack.length); p.then(() => { expect(1, promiseStack.length); }); promises.values().next().value "#; let promise = eval(scope, source).unwrap(); let promise = v8::Local::::try_from(promise).unwrap(); assert!(!promise.has_handler()); assert_eq!(promise.state(), v8::PromiseState::Pending); scope.perform_microtask_checkpoint(); let _ = eval( scope, r#" expect(0, promiseStack.length); "#, ) .unwrap(); } } #[test] fn allow_atomics_wait() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); for allow in &[false, true, false] { let allow = *allow; isolate.set_allow_atomics_wait(allow); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = r#" const b = new SharedArrayBuffer(4); const a = new Int32Array(b); "timed-out" === Atomics.wait(a, 0, 0, 1); "#; let try_catch = &mut v8::TryCatch::new(scope); let result = eval(try_catch, source); if allow { assert!(!try_catch.has_caught()); assert!(result.unwrap().is_true()); } else { assert!(try_catch.has_caught()); let exc = try_catch.exception().unwrap(); let exc = exc.to_string(try_catch).unwrap(); let exc = exc.to_rust_string_lossy(try_catch); assert!(exc.contains("Atomics.wait cannot be called in this context")); } } } } fn mock_script_origin<'s>( scope: &mut v8::HandleScope<'s>, resource_name_: &str, ) -> v8::ScriptOrigin<'s> { let resource_name = v8::String::new(scope, resource_name_).unwrap(); let resource_line_offset = 0; let resource_column_offset = 0; let resource_is_shared_cross_origin = true; let script_id = 123; let source_map_url = v8::String::new(scope, "source_map_url").unwrap(); let resource_is_opaque = true; let is_wasm = false; let is_module = true; v8::ScriptOrigin::new( scope, resource_name.into(), resource_line_offset, resource_column_offset, resource_is_shared_cross_origin, script_id, source_map_url.into(), resource_is_opaque, is_wasm, is_module, ) } fn mock_source<'s>( scope: &mut v8::HandleScope<'s>, resource_name: &str, source: &str, ) -> v8::script_compiler::Source { let source_str = v8::String::new(scope, source).unwrap(); let script_origin = mock_script_origin(scope, resource_name); v8::script_compiler::Source::new(source_str, Some(&script_origin)) } #[test] fn script_compiler_source() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); isolate.set_promise_reject_callback(promise_reject_callback); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = "1+2"; let script_origin = mock_script_origin(scope, "foo.js"); let source = v8::script_compiler::Source::new( v8::String::new(scope, source).unwrap(), Some(&script_origin), ); assert!(source.get_cached_data().is_none()); let result = v8::script_compiler::compile_module(scope, source); assert!(result.is_some()); } } #[test] fn module_instantiation_failures1() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source_text = v8::String::new( scope, "import './foo.js';\n\ export {} from './bar.js';", ) .unwrap(); let origin = mock_script_origin(scope, "foo.js"); let source = v8::script_compiler::Source::new(source_text, Some(&origin)); let module = v8::script_compiler::compile_module(scope, source).unwrap(); assert_eq!(v8::ModuleStatus::Uninstantiated, module.get_status()); let module_requests = module.get_module_requests(); assert_eq!(2, module_requests.length()); assert!(module.script_id().is_some()); let mr1 = v8::Local::::try_from( module_requests.get(scope, 0).unwrap(), ) .unwrap(); assert_eq!("./foo.js", mr1.get_specifier().to_rust_string_lossy(scope)); let loc = module.source_offset_to_location(mr1.get_source_offset()); assert_eq!(0, loc.get_line_number()); assert_eq!(7, loc.get_column_number()); assert_eq!(0, mr1.get_import_assertions().length()); let mr2 = v8::Local::::try_from( module_requests.get(scope, 1).unwrap(), ) .unwrap(); assert_eq!("./bar.js", mr2.get_specifier().to_rust_string_lossy(scope)); let loc = module.source_offset_to_location(mr2.get_source_offset()); assert_eq!(1, loc.get_line_number()); assert_eq!(15, loc.get_column_number()); assert_eq!(0, mr2.get_import_assertions().length()); // Instantiation should fail. { let tc = &mut v8::TryCatch::new(scope); fn resolve_callback<'a>( context: v8::Local<'a, v8::Context>, _specifier: v8::Local<'a, v8::String>, _import_assertions: v8::Local<'a, v8::FixedArray>, _referrer: v8::Local<'a, v8::Module>, ) -> Option> { let scope = &mut unsafe { v8::CallbackScope::new(context) }; let scope = &mut v8::HandleScope::new(scope); let e = v8::String::new(scope, "boom").unwrap(); scope.throw_exception(e.into()); None } let result = module.instantiate_module(tc, resolve_callback); assert!(result.is_none()); assert!(tc.has_caught()); assert!(tc .exception() .unwrap() .strict_equals(v8::String::new(tc, "boom").unwrap().into())); assert_eq!(v8::ModuleStatus::Uninstantiated, module.get_status()); } } } // Clippy thinks the return value doesn't need to be an Option, it's unaware // of the mapping that MapFnFrom does for ResolveModuleCallback. #[allow(clippy::unnecessary_wraps)] fn compile_specifier_as_module_resolve_callback<'a>( context: v8::Local<'a, v8::Context>, specifier: v8::Local<'a, v8::String>, _import_assertions: v8::Local<'a, v8::FixedArray>, _referrer: v8::Local<'a, v8::Module>, ) -> Option> { let scope = &mut unsafe { v8::CallbackScope::new(context) }; let origin = mock_script_origin(scope, "module.js"); let source = v8::script_compiler::Source::new(specifier, Some(&origin)); let module = v8::script_compiler::compile_module(scope, source).unwrap(); Some(module) } #[test] fn module_evaluation() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source_text = v8::String::new( scope, "import 'Object.expando = 5';\n\ import 'Object.expando *= 2';", ) .unwrap(); let origin = mock_script_origin(scope, "foo.js"); let source = v8::script_compiler::Source::new(source_text, Some(&origin)); let module = v8::script_compiler::compile_module(scope, source).unwrap(); assert!(module.script_id().is_some()); assert!(module.is_source_text_module()); assert!(!module.is_synthetic_module()); assert_eq!(v8::ModuleStatus::Uninstantiated, module.get_status()); module.hash(&mut DefaultHasher::new()); // Should not crash. let result = module .instantiate_module(scope, compile_specifier_as_module_resolve_callback); assert!(result.unwrap()); assert_eq!(v8::ModuleStatus::Instantiated, module.get_status()); let result = module.evaluate(scope); assert!(result.is_some()); assert_eq!(v8::ModuleStatus::Evaluated, module.get_status()); let result = eval(scope, "Object.expando").unwrap(); assert!(result.is_number()); let expected = v8::Number::new(scope, 10.); assert!(result.strict_equals(expected.into())); } } #[test] fn import_assertions() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); // Clippy thinks the return value doesn't need to be an Option, it's unaware // of the mapping that MapFnFrom does for ResolveModuleCallback. #[allow(clippy::unnecessary_wraps)] fn module_resolve_callback<'a>( context: v8::Local<'a, v8::Context>, _specifier: v8::Local<'a, v8::String>, import_assertions: v8::Local<'a, v8::FixedArray>, _referrer: v8::Local<'a, v8::Module>, ) -> Option> { let scope = &mut unsafe { v8::CallbackScope::new(context) }; // "type" keyword, value and source offset of assertion assert_eq!(import_assertions.length(), 3); let assert1 = import_assertions.get(scope, 0).unwrap(); let assert1_val = v8::Local::::try_from(assert1).unwrap(); assert_eq!(assert1_val.to_rust_string_lossy(scope), "type"); let assert2 = import_assertions.get(scope, 1).unwrap(); let assert2_val = v8::Local::::try_from(assert2).unwrap(); assert_eq!(assert2_val.to_rust_string_lossy(scope), "json"); let assert3 = import_assertions.get(scope, 2).unwrap(); let assert3_val = v8::Local::::try_from(assert3).unwrap(); assert_eq!(assert3_val.to_rust_string_lossy(scope), "27"); let origin = mock_script_origin(scope, "module.js"); let src = v8::String::new(scope, "export const a = 'a';").unwrap(); let source = v8::script_compiler::Source::new(src, Some(&origin)); let module = v8::script_compiler::compile_module(scope, source).unwrap(); Some(module) } extern "C" fn dynamic_import_cb( context: v8::Local, _host_defined_options: v8::Local, _resource_name: v8::Local, _specifier: v8::Local, import_assertions: v8::Local, ) -> *mut v8::Promise { let scope = &mut unsafe { v8::CallbackScope::new(context) }; let scope = &mut v8::HandleScope::new(scope); // "type" keyword, value assert_eq!(import_assertions.length(), 2); let assert1 = import_assertions.get(scope, 0).unwrap(); let assert1_val = v8::Local::::try_from(assert1).unwrap(); assert_eq!(assert1_val.to_rust_string_lossy(scope), "type"); let assert2 = import_assertions.get(scope, 1).unwrap(); let assert2_val = v8::Local::::try_from(assert2).unwrap(); assert_eq!(assert2_val.to_rust_string_lossy(scope), "json"); std::ptr::null_mut() } isolate.set_host_import_module_dynamically_callback(dynamic_import_cb); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source_text = v8::String::new( scope, "import 'foo.json' assert { type: \"json\" };\n\ import('foo.json', { assert: { type: 'json' } });", ) .unwrap(); let origin = mock_script_origin(scope, "foo.js"); let source = v8::script_compiler::Source::new(source_text, Some(&origin)); let module = v8::script_compiler::compile_module(scope, source).unwrap(); assert!(module.script_id().is_some()); assert!(module.is_source_text_module()); assert!(!module.is_synthetic_module()); assert_eq!(v8::ModuleStatus::Uninstantiated, module.get_status()); module.hash(&mut DefaultHasher::new()); // Should not crash. let result = module.instantiate_module(scope, module_resolve_callback); assert!(result.unwrap()); assert_eq!(v8::ModuleStatus::Instantiated, module.get_status()); } } #[test] fn primitive_array() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let length = 3; let array = v8::PrimitiveArray::new(scope, length); assert_eq!(length, array.length()); for i in 0..length { let item = array.get(scope, i); assert!(item.is_undefined()); } let string = v8::String::new(scope, "test").unwrap(); array.set(scope, 1, string.into()); assert!(array.get(scope, 0).is_undefined()); assert!(array.get(scope, 1).is_string()); let num = v8::Number::new(scope, 0.42); array.set(scope, 2, num.into()); assert!(array.get(scope, 0).is_undefined()); assert!(array.get(scope, 1).is_string()); assert!(array.get(scope, 2).is_number()); } } #[test] fn equality() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); assert!(v8::String::new(scope, "a") .unwrap() .strict_equals(v8::String::new(scope, "a").unwrap().into())); assert!(!v8::String::new(scope, "a") .unwrap() .strict_equals(v8::String::new(scope, "b").unwrap().into())); assert!(v8::String::new(scope, "a") .unwrap() .same_value(v8::String::new(scope, "a").unwrap().into())); assert!(!v8::String::new(scope, "a") .unwrap() .same_value(v8::String::new(scope, "b").unwrap().into())); } } #[test] #[allow(clippy::eq_op)] fn equality_edge_cases() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let pos_zero = eval(scope, "0").unwrap(); let neg_zero = eval(scope, "-0").unwrap(); let nan = eval(scope, "NaN").unwrap(); assert!(pos_zero == pos_zero); assert!(pos_zero.same_value(pos_zero)); assert!(pos_zero.same_value_zero(pos_zero)); assert!(pos_zero.strict_equals(pos_zero)); assert_eq!(pos_zero.get_hash(), pos_zero.get_hash()); assert!(neg_zero == neg_zero); assert!(neg_zero.same_value(neg_zero)); assert!(neg_zero.same_value_zero(neg_zero)); assert!(neg_zero.strict_equals(neg_zero)); assert_eq!(neg_zero.get_hash(), neg_zero.get_hash()); assert!(pos_zero == neg_zero); assert!(!pos_zero.same_value(neg_zero)); assert!(pos_zero.same_value_zero(neg_zero)); assert!(pos_zero.strict_equals(neg_zero)); assert_eq!(pos_zero.get_hash(), neg_zero.get_hash()); assert!(neg_zero == pos_zero); assert!(!neg_zero.same_value(pos_zero)); assert!(neg_zero.same_value_zero(pos_zero)); assert!(neg_zero.strict_equals(pos_zero)); assert_eq!(neg_zero.get_hash(), pos_zero.get_hash()); assert!(nan == nan); assert!(nan.same_value(nan)); assert!(nan.same_value_zero(nan)); assert!(!nan.strict_equals(nan)); assert_eq!(nan.get_hash(), nan.get_hash()); assert!(nan != pos_zero); assert!(!nan.same_value(pos_zero)); assert!(!nan.same_value_zero(pos_zero)); assert!(!nan.strict_equals(pos_zero)); assert!(neg_zero != nan); assert!(!neg_zero.same_value(nan)); assert!(!neg_zero.same_value_zero(nan)); assert!(!neg_zero.strict_equals(nan)); } #[test] fn get_hash() { use std::collections::HashMap; use std::collections::HashSet; use std::iter::once; let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); // Note: the set with hashes and the collition counter is used below in both // the 'primitives' and the 'objects' section. let mut hashes = HashSet::new(); let mut collision_count = 0; let mut get_primitives = || -> v8::Local { eval( scope, r#"[ undefined, null, false, true, 0, 123, 12345e67, 123456789012345678901234567890123456789012345678901234567890n, NaN, -Infinity, "", "hello metaverse!", Symbol.isConcatSpreadable ]"#, ) .unwrap() .try_into() .unwrap() }; let primitives1 = get_primitives(); let primitives2 = get_primitives(); let len = primitives1.length(); assert!(len > 10); assert_eq!(len, primitives2.length()); let mut name_count = 0; for i in 0..len { let pri1 = primitives1.get_index(scope, i).unwrap(); let pri2 = primitives2.get_index(scope, i).unwrap(); let hash = pri1.get_hash(); assert_eq!(hash, pri2.get_hash()); if let Ok(name) = v8::Local::::try_from(pri1) { assert_eq!(hash, name.get_identity_hash()); name_count += 1; } if !hashes.insert(hash) { collision_count += 1; } let map = once((v8::Global::new(scope, pri1), i)).collect::>(); assert_eq!(map[&*pri2], i); } assert_eq!(name_count, 3); assert!(collision_count <= 2); for _ in 0..1 { let objects: v8::Local:: = eval( scope, r#"[ [1, 2, 3], (function() { return arguments; })(1, 2, 3), { a: 1, b: 2, c: 3 }, Object.create(null), new Map([[null, 1], ["2", 3n]]), new Set(), function f() {}, function* f() {}, async function f() {}, async function* f() {}, foo => foo, async bar => bar, class Custom extends Object { method(p) { return -p; } }, new class MyString extends String { constructor() { super("yeaeaeah"); } }, (() => { try { not_defined } catch(e) { return e; } })() ]"#) .unwrap() .try_into() .unwrap(); let len = objects.length(); assert!(len > 10); for i in 0..len { let val = objects.get_index(scope, i).unwrap(); let hash = val.get_hash(); let obj = v8::Local::::try_from(val).unwrap(); assert_eq!(hash, obj.get_identity_hash()); if !hashes.insert(hash) { collision_count += 1; } let map = once((v8::Global::new(scope, obj), i)).collect::>(); assert_eq!(map[&*obj], i); } assert!(collision_count <= 2); } // TODO: add tests for `External` and for types that are not derived from // `v8::Value`, like `Module`, `Function/ObjectTemplate` etc. } #[test] fn array_buffer_view() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::String::new(scope, "new Uint8Array([23,23,23,23])").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); source.to_rust_string_lossy(scope); let result: v8::Local = script.run(scope).unwrap().try_into().unwrap(); assert_eq!(result.byte_length(), 4); assert_eq!(result.byte_offset(), 0); let mut dest = [0; 4]; let copy_bytes = result.copy_contents(&mut dest); assert_eq!(copy_bytes, 4); assert_eq!(dest, [23, 23, 23, 23]); let maybe_ab = result.buffer(scope); assert!(maybe_ab.is_some()); let ab = maybe_ab.unwrap(); assert_eq!(ab.byte_length(), 4); } } #[test] fn snapshot_creator() { let _setup_guard = setup(); // First we create the snapshot, there is a single global variable 'a' set to // the value 3. let isolate_data_index; let context_data_index; let context_data_index_2; let startup_data = { let mut snapshot_creator = v8::SnapshotCreator::new(None); // TODO(ry) this shouldn't be necessary. workaround unfinished business in // the scope type system. let mut isolate = unsafe { snapshot_creator.get_owned_isolate() }; { // Check that the SnapshotCreator isolate has been set up correctly. let _ = isolate.thread_safe_handle(); let scope = &mut v8::HandleScope::new(&mut isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::String::new(scope, "a = 1 + 2").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); script.run(scope).unwrap(); snapshot_creator.set_default_context(context); isolate_data_index = snapshot_creator.add_isolate_data(v8::Number::new(scope, 1.0)); context_data_index = snapshot_creator.add_context_data(context, v8::Number::new(scope, 2.0)); context_data_index_2 = snapshot_creator.add_context_data(context, v8::Number::new(scope, 3.0)); } std::mem::forget(isolate); // TODO(ry) this shouldn't be necessary. snapshot_creator .create_blob(v8::FunctionCodeHandling::Clear) .unwrap() }; assert!(startup_data.len() > 0); // Now we try to load up the snapshot and check that 'a' has the correct // value. { let params = v8::Isolate::create_params().snapshot_blob(startup_data); let isolate = &mut v8::Isolate::new(params); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::String::new(scope, "a === 3").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); let result = script.run(scope).unwrap(); let true_val = v8::Boolean::new(scope, true).into(); assert!(result.same_value(true_val)); let isolate_data = scope .get_isolate_data_from_snapshot_once::(isolate_data_index); assert!(isolate_data.unwrap() == v8::Number::new(scope, 1.0)); let no_data_err = scope .get_isolate_data_from_snapshot_once::(isolate_data_index); assert!(matches!(no_data_err, Err(v8::DataError::NoData { .. }))); let context_data = scope .get_context_data_from_snapshot_once::(context_data_index); assert!(context_data.unwrap() == v8::Number::new(scope, 2.0)); let no_data_err = scope .get_context_data_from_snapshot_once::(context_data_index); assert!(matches!(no_data_err, Err(v8::DataError::NoData { .. }))); let bad_type_err = scope .get_context_data_from_snapshot_once::( context_data_index_2, ); assert!(matches!(bad_type_err, Err(v8::DataError::BadType { .. }))); } } } #[test] fn external_references() { let _setup_guard = setup(); // Allocate externals for the test. let external_ptr = Box::into_raw(vec![0_u8, 1, 2, 3, 4].into_boxed_slice()) as *mut [u8] as *mut c_void; // Push them to the external reference table. let refs = v8::ExternalReferences::new(&[ v8::ExternalReference { function: fn_callback.map_fn_to(), }, v8::ExternalReference { function: fn_callback_external.map_fn_to(), }, v8::ExternalReference { pointer: external_ptr, }, ]); // TODO(piscisaureus): leaking the `ExternalReferences` collection shouldn't // be necessary. The reference needs to remain valid for the lifetime of the // `SnapshotCreator` or `Isolate` that uses it, which would be the case here // even without leaking. let refs: &'static v8::ExternalReferences = Box::leak(Box::new(refs)); // First we create the snapshot, there is a single global variable 'a' set to // the value 3. let startup_data = { let mut snapshot_creator = v8::SnapshotCreator::new(Some(refs)); // TODO(ry) this shouldn't be necessary. workaround unfinished business in // the scope type system. let mut isolate = unsafe { snapshot_creator.get_owned_isolate() }; { let scope = &mut v8::HandleScope::new(&mut isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); // create function using template let external = v8::External::new(scope, external_ptr); let fn_template = v8::FunctionTemplate::builder(fn_callback_external) .data(external.into()) .build(scope); let function = fn_template .get_function(scope) .expect("Unable to create function"); let global = context.global(scope); let key = v8::String::new(scope, "F").unwrap(); global.set(scope, key.into(), function.into()); snapshot_creator.set_default_context(context); } std::mem::forget(isolate); // TODO(ry) this shouldn't be necessary. snapshot_creator .create_blob(v8::FunctionCodeHandling::Clear) .unwrap() }; assert!(startup_data.len() > 0); // Now we try to load up the snapshot and check that 'a' has the correct // value. { let params = v8::Isolate::create_params() .snapshot_blob(startup_data) .external_references(&**refs); let isolate = &mut v8::Isolate::new(params); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let result = eval(scope, "if(F() != 'wrong answer') throw 'boom1'"); assert!(result.is_none()); let result = eval(scope, "if(F() != 'Hello callback!') throw 'boom2'"); assert!(result.is_some()); } } } #[test] fn create_params_snapshot_blob() { let static_data = b"abcd"; let _ = v8::CreateParams::default().snapshot_blob(&static_data[..]); let vec_1 = Vec::from(&b"defg"[..]); let _ = v8::CreateParams::default().snapshot_blob(vec_1); let vec_2 = std::fs::read(file!()).unwrap(); let _ = v8::CreateParams::default().snapshot_blob(vec_2); let arc_slice: std::sync::Arc<[u8]> = std::fs::read(file!()).unwrap().into(); let _ = v8::CreateParams::default().snapshot_blob(arc_slice.clone()); let _ = v8::CreateParams::default().snapshot_blob(arc_slice); } #[test] fn uint8_array() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::String::new(scope, "new Uint8Array([23,23,23,23])").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); source.to_rust_string_lossy(scope); let result: v8::Local = script.run(scope).unwrap().try_into().unwrap(); assert_eq!(result.byte_length(), 4); assert_eq!(result.byte_offset(), 0); let mut dest = [0; 4]; let copy_bytes = result.copy_contents(&mut dest); assert_eq!(copy_bytes, 4); assert_eq!(dest, [23, 23, 23, 23]); let maybe_ab = result.buffer(scope); assert!(maybe_ab.is_some()); let ab = maybe_ab.unwrap(); let uint8_array = v8::Uint8Array::new(scope, ab, 0, 0); assert!(uint8_array.is_some()); } } #[test] fn typed_array_constructors() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let ab = v8::ArrayBuffer::new(scope, 8); let t = v8::Uint8Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_uint8_array()); let t = v8::Uint8ClampedArray::new(scope, ab, 0, 0).unwrap(); assert!(t.is_uint8_clamped_array()); let t = v8::Int8Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_int8_array()); let t = v8::Uint16Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_uint16_array()); let t = v8::Int16Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_int16_array()); let t = v8::Uint32Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_uint32_array()); let t = v8::Int32Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_int32_array()); let t = v8::Float32Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_float32_array()); let t = v8::Float64Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_float64_array()); let t = v8::BigUint64Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_big_uint64_array()); let t = v8::BigInt64Array::new(scope, ab, 0, 0).unwrap(); assert!(t.is_big_int64_array()); // TypedArray::max_length() ought to be >= 2^30 < 2^32 assert!(((2 << 30)..(2 << 32)).contains(&v8::TypedArray::max_length())); // v8::ArrayBuffer::new raises a fatal if the length is > kMaxLength, so we test this behavior // through the JS side of things, where a non-fatal RangeError is thrown in such cases. { let scope = &mut v8::TryCatch::new(scope); let _ = eval( scope, &format!("new Uint8Array({})", v8::TypedArray::max_length()), ) .unwrap(); assert!(!scope.has_caught()); } { let scope = &mut v8::TryCatch::new(scope); eval( scope, &format!("new Uint8Array({})", v8::TypedArray::max_length() + 1), ); // Array is too big (> max_length) - expecting this threw a RangeError assert!(scope.has_caught()); } } #[test] fn dynamic_import() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); static CALL_COUNT: AtomicUsize = AtomicUsize::new(0); extern "C" fn dynamic_import_cb( context: v8::Local, _host_defined_options: v8::Local, _resource_name: v8::Local, specifier: v8::Local, _import_assertions: v8::Local, ) -> *mut v8::Promise { let scope = &mut unsafe { v8::CallbackScope::new(context) }; let scope = &mut v8::HandleScope::new(scope); assert!( specifier.strict_equals(v8::String::new(scope, "bar.js").unwrap().into()) ); let e = v8::String::new(scope, "boom").unwrap(); scope.throw_exception(e.into()); CALL_COUNT.fetch_add(1, Ordering::SeqCst); std::ptr::null_mut() } isolate.set_host_import_module_dynamically_callback(dynamic_import_cb); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let result = eval( scope, "(async function () {\n\ let x = await import('bar.js');\n\ })();", ); assert!(result.is_some()); assert_eq!(CALL_COUNT.load(Ordering::SeqCst), 1); } } #[test] fn shared_array_buffer() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let sab = v8::SharedArrayBuffer::new(scope, 16).unwrap(); let shared_bs_1 = sab.get_backing_store(); shared_bs_1[5].set(12); shared_bs_1[12].set(52); let global = context.global(scope); let key = v8::String::new(scope, "shared").unwrap(); let r = global .create_data_property(scope, key.into(), sab.into()) .unwrap(); assert!(r); let source = v8::String::new( scope, r"sharedBytes = new Uint8Array(shared); sharedBytes[2] = 16; sharedBytes[14] = 62; sharedBytes[5] + sharedBytes[12]", ) .unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); let result: v8::Local = script.run(scope).unwrap().try_into().unwrap(); assert_eq!(result.value(), 64); assert_eq!(shared_bs_1[2].get(), 16); assert_eq!(shared_bs_1[14].get(), 62); let data: Box<[u8]> = vec![0, 1, 2, 3, 4, 5, 6, 7, 8, 9].into_boxed_slice(); let bs = v8::SharedArrayBuffer::new_backing_store_from_boxed_slice(data); assert_eq!(bs.byte_length(), 10); assert!(bs.is_shared()); let shared_bs_2 = bs.make_shared(); assert_eq!(shared_bs_2.byte_length(), 10); assert!(shared_bs_2.is_shared()); let ab = v8::SharedArrayBuffer::with_backing_store(scope, &shared_bs_2); let shared_bs_3 = ab.get_backing_store(); assert_eq!(shared_bs_3.byte_length(), 10); assert_eq!(shared_bs_3[0].get(), 0); assert_eq!(shared_bs_3[9].get(), 9); } } #[test] #[allow(clippy::cognitive_complexity)] #[allow(clippy::eq_op)] fn value_checker() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let value = eval(scope, "undefined").unwrap(); assert!(value.is_undefined()); assert!(value.is_null_or_undefined()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::undefined(scope)); assert!(value != v8::null(scope)); assert!(value != v8::Boolean::new(scope, false)); assert!(value != v8::Integer::new(scope, 0)); let value = eval(scope, "null").unwrap(); assert!(value.is_null()); assert!(value.is_null_or_undefined()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::null(scope)); assert!(value == v8::Global::new(scope, value)); assert!(v8::Global::new(scope, value) == v8::Global::new(scope, value)); assert!(v8::Global::new(scope, value) == v8::null(scope)); assert!(value != v8::undefined(scope)); assert!(value != v8::Boolean::new(scope, false)); assert!(value != v8::Integer::new(scope, 0)); assert!(value.to_boolean(scope) == v8::Boolean::new(scope, false)); assert!(!value.boolean_value(scope)); let value = eval(scope, "true").unwrap(); assert!(value.is_boolean()); assert!(value.is_true()); assert!(!value.is_false()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::Boolean::new(scope, true)); assert!(value == v8::Global::new(scope, value)); assert!(v8::Global::new(scope, value) == v8::Global::new(scope, value)); assert!(v8::Global::new(scope, value) == eval(scope, "!false").unwrap()); assert!(v8::Global::new(scope, value) != eval(scope, "1").unwrap()); assert!(value != v8::Boolean::new(scope, false)); assert!(value.boolean_value(scope)); let value = eval(scope, "false").unwrap(); assert!(value.is_boolean()); assert!(!value.is_true()); assert!(value.is_false()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::Boolean::new(scope, false)); assert!(value == v8::Global::new(scope, value)); assert!(v8::Global::new(scope, value) == v8::Global::new(scope, value)); assert!(v8::Global::new(scope, value) == eval(scope, "!true").unwrap()); assert!(v8::Global::new(scope, value) != eval(scope, "0").unwrap()); assert!(value != v8::Boolean::new(scope, true)); assert!(value != v8::null(scope)); assert!(value != v8::undefined(scope)); assert!(value != v8::Integer::new(scope, 0)); assert!(!value.boolean_value(scope)); let value = eval(scope, "'name'").unwrap(); assert!(value.is_name()); assert!(value.is_string()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::String::new(scope, "name").unwrap()); assert!(value != v8::String::new(scope, "name\0").unwrap()); assert!(value != v8::Object::new(scope)); assert!(value.to_boolean(scope) == v8::Boolean::new(scope, true)); assert!(value.boolean_value(scope)); let value = eval(scope, "Symbol()").unwrap(); assert!(value.is_name()); assert!(value.is_symbol()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::Global::new(scope, value)); assert!(v8::Global::new(scope, value) == v8::Global::new(scope, value)); assert!(value != eval(scope, "Symbol()").unwrap()); assert!(v8::Global::new(scope, value) != eval(scope, "Symbol()").unwrap()); let value = eval(scope, "() => 0").unwrap(); assert!(value.is_function()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::Global::new(scope, value)); assert!(v8::Global::new(scope, value) == v8::Global::new(scope, value)); assert!(value != eval(scope, "() => 0").unwrap()); assert!(v8::Global::new(scope, value) != eval(scope, "() => 0").unwrap()); let value = eval(scope, "async () => 0").unwrap(); assert!(value.is_async_function()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(v8::Global::new(scope, value) == v8::Global::new(scope, value)); assert!(value != v8::Object::new(scope)); assert!(v8::Global::new(scope, value) != v8::Object::new(scope)); let value = eval(scope, "[]").unwrap(); assert!(value.is_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Array::new(scope, 0)); let value = eval(scope, "9007199254740995n").unwrap(); assert!(value.is_big_int()); assert!(value.to_big_int(scope).is_some()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == eval(scope, "1801439850948199n * 5n").unwrap()); assert!(value != eval(scope, "1801439850948199 * 5").unwrap()); let detail_string = value.to_detail_string(scope).unwrap(); let detail_string = detail_string.to_rust_string_lossy(scope); assert_eq!("9007199254740995", detail_string); let value = eval(scope, "123").unwrap(); assert!(value.is_number()); assert!(value.is_int32()); assert!(value.is_uint32()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::Integer::new(scope, 123)); assert!(value == v8::Number::new(scope, 123f64)); assert!(value == value.to_int32(scope).unwrap()); assert!(value != value.to_string(scope).unwrap()); assert_eq!(123, value.to_uint32(scope).unwrap().value()); assert_eq!(123, value.to_int32(scope).unwrap().value()); assert_eq!(123, value.to_integer(scope).unwrap().value()); assert_eq!(123, value.integer_value(scope).unwrap()); assert_eq!(123, value.uint32_value(scope).unwrap()); assert_eq!(123, value.int32_value(scope).unwrap()); let value = eval(scope, "12.3").unwrap(); assert!(value.is_number()); assert!(!value.is_int32()); assert!(!value.is_uint32()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::Number::new(scope, 12.3f64)); assert!(value != value.to_integer(scope).unwrap()); assert!(12.3 - value.number_value(scope).unwrap() < 0.00001); let value = eval(scope, "-123").unwrap(); assert!(value.is_number()); assert!(value.is_int32()); assert!(!value.is_uint32()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::Integer::new(scope, -123)); assert!(value == v8::Number::new(scope, -123f64)); assert!(value != v8::String::new(scope, "-123").unwrap()); assert!( value == v8::Integer::new_from_unsigned(scope, -123i32 as u32) .to_int32(scope) .unwrap() ); // The following test does not pass. This appears to be a V8 bug. // assert!(value != value.to_uint32(scope).unwrap()); let value = eval(scope, "NaN").unwrap(); assert!(value.is_number()); assert!(!value.is_int32()); assert!(!value.is_uint32()); assert!(!value.strict_equals(value)); assert!( value.to_string(scope).unwrap() == v8::String::new(scope, "NaN").unwrap() ); let value = eval(scope, "({})").unwrap(); assert!(value.is_object()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value == v8::Global::new(scope, value)); assert!(v8::Global::new(scope, value) == v8::Global::new(scope, value)); assert!(value != v8::Object::new(scope)); assert!(v8::Global::new(scope, value) != v8::Object::new(scope)); let value = eval(scope, "new Date()").unwrap(); assert!(value.is_date()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != eval(scope, "new Date()").unwrap()); let value = eval(scope, "(function(){return arguments})()").unwrap(); assert!(value.is_arguments_object()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Promise(function(){})").unwrap(); assert!(value.is_promise()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Map()").unwrap(); assert!(value.is_map()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Set").unwrap(); assert!(value.is_set()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Map().entries()").unwrap(); assert!(value.is_map_iterator()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Set().entries()").unwrap(); assert!(value.is_set_iterator()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new WeakMap()").unwrap(); assert!(value.is_weak_map()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new WeakSet()").unwrap(); assert!(value.is_weak_set()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new ArrayBuffer(8)").unwrap(); assert!(value.is_array_buffer()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Uint8Array([])").unwrap(); assert!(value.is_uint8_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Uint8ClampedArray([])").unwrap(); assert!(value.is_uint8_clamped_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!( value == v8::Local::::try_from(value).unwrap() ); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Int8Array([])").unwrap(); assert!(value.is_int8_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Uint16Array([])").unwrap(); assert!(value.is_uint16_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Int16Array([])").unwrap(); assert!(value.is_int16_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Uint32Array([])").unwrap(); assert!(value.is_uint32_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Int32Array([])").unwrap(); assert!(value.is_int32_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Float32Array([])").unwrap(); assert!(value.is_float32_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Float64Array([])").unwrap(); assert!(value.is_float64_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new BigInt64Array([])").unwrap(); assert!(value.is_big_int64_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new BigUint64Array([])").unwrap(); assert!(value.is_big_uint64_array()); assert!(value.is_array_buffer_view()); assert!(value.is_typed_array()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new SharedArrayBuffer(64)").unwrap(); assert!(value.is_shared_array_buffer()); assert!(value == value); assert!( value == v8::Local::::try_from(value).unwrap() ); assert!(value != v8::Object::new(scope)); let value = eval(scope, "new Proxy({},{})").unwrap(); assert!(value.is_proxy()); assert!(value == value); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); // Other checker, Just check if it can be called value.is_external(); value.is_module_namespace_object(); value.is_wasm_module_object(); } } #[test] fn try_from_data() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let module_source = mock_source(scope, "answer.js", "fail()"); let function_callback = |_: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, _: v8::ReturnValue| { unreachable!() }; let function_template = v8::FunctionTemplate::new(scope, function_callback); let d: v8::Local = function_template.into(); assert!(d.is_function_template()); assert!(!d.is_module()); assert!(!d.is_object_template()); assert!(!d.is_private()); assert!(!d.is_value()); assert!( v8::Local::::try_from(d).unwrap() == function_template ); let module = v8::script_compiler::compile_module(scope, module_source).unwrap(); let d: v8::Local = module.into(); assert!(!d.is_function_template()); assert!(d.is_module()); assert!(!d.is_object_template()); assert!(!d.is_private()); assert!(!d.is_value()); assert!(v8::Local::::try_from(d).unwrap() == module); let object_template = v8::ObjectTemplate::new(scope); let d: v8::Local = object_template.into(); assert!(!d.is_function_template()); assert!(!d.is_module()); assert!(d.is_object_template()); assert!(!d.is_private()); assert!(!d.is_value()); assert!( v8::Local::::try_from(d).unwrap() == object_template ); let p: v8::Local = v8::Private::new(scope, None).into(); assert!(!p.is_function_template()); assert!(!p.is_module()); assert!(!p.is_object_template()); assert!(p.is_private()); assert!(!p.is_value()); let values: &[v8::Local] = &[ v8::null(scope).into(), v8::undefined(scope).into(), v8::BigInt::new_from_u64(scope, 1337).into(), v8::Boolean::new(scope, true).into(), v8::Function::new(scope, function_callback).unwrap().into(), v8::Number::new(scope, 42.0).into(), v8::Object::new(scope).into(), v8::Symbol::new(scope, None).into(), v8::String::new(scope, "hello").unwrap().into(), ]; for &v in values { let d: v8::Local = v.into(); assert!(!d.is_function_template()); assert!(!d.is_module()); assert!(!d.is_object_template()); assert!(!d.is_private()); assert!(d.is_value()); assert!(v8::Local::::try_from(d).unwrap() == v); } } #[test] fn try_from_value() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); { let value: v8::Local = v8::undefined(scope).into(); let _primitive = v8::Local::::try_from(value).unwrap(); assert!(matches!( v8::Local::::try_from(value), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); assert!(matches!( v8::Local::::try_from(value), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); } { let value: v8::Local = v8::Boolean::new(scope, true).into(); let primitive = v8::Local::::try_from(value).unwrap(); let _boolean = v8::Local::::try_from(value).unwrap(); let _boolean = v8::Local::::try_from(primitive).unwrap(); assert!(matches!( v8::Local::::try_from(value), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); assert!(matches!( v8::Local::::try_from(primitive), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); } { let value: v8::Local = v8::Number::new(scope, -1234f64).into(); let primitive = v8::Local::::try_from(value).unwrap(); let _number = v8::Local::::try_from(value).unwrap(); let number = v8::Local::::try_from(primitive).unwrap(); let _integer = v8::Local::::try_from(value).unwrap(); let _integer = v8::Local::::try_from(primitive).unwrap(); let integer = v8::Local::::try_from(number).unwrap(); let _int32 = v8::Local::::try_from(value).unwrap(); let _int32 = v8::Local::::try_from(primitive).unwrap(); let _int32 = v8::Local::::try_from(integer).unwrap(); let _int32 = v8::Local::::try_from(number).unwrap(); assert!(matches!( v8::Local::::try_from(value), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); assert!(matches!( v8::Local::::try_from(primitive), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); assert!(matches!( v8::Local::::try_from(integer), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); } { let value: v8::Local = eval(scope, "(() => {})").unwrap(); let object = v8::Local::::try_from(value).unwrap(); let _function = v8::Local::::try_from(value).unwrap(); let _function = v8::Local::::try_from(object).unwrap(); assert!(matches!( v8::Local::::try_from(value), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); assert!(matches!( v8::Local::::try_from(value), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); assert!(matches!( v8::Local::::try_from(value), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); assert!(matches!( v8::Local::::try_from(object), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); assert!(matches!( v8::Local::::try_from(value), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); assert!(matches!( v8::Local::::try_from(object), Err(v8::DataError::BadType { expected, .. }) if expected == type_name::() )); } } } struct ClientCounter { base: v8::inspector::V8InspectorClientBase, count_run_message_loop_on_pause: usize, count_quit_message_loop_on_pause: usize, count_run_if_waiting_for_debugger: usize, count_generate_unique_id: i64, } impl ClientCounter { fn new() -> Self { Self { base: v8::inspector::V8InspectorClientBase::new::(), count_run_message_loop_on_pause: 0, count_quit_message_loop_on_pause: 0, count_run_if_waiting_for_debugger: 0, count_generate_unique_id: 0, } } } impl v8::inspector::V8InspectorClientImpl for ClientCounter { fn base(&self) -> &v8::inspector::V8InspectorClientBase { &self.base } fn base_mut(&mut self) -> &mut v8::inspector::V8InspectorClientBase { &mut self.base } fn run_message_loop_on_pause(&mut self, context_group_id: i32) { assert_eq!(context_group_id, 1); self.count_run_message_loop_on_pause += 1; } fn quit_message_loop_on_pause(&mut self) { self.count_quit_message_loop_on_pause += 1; } fn run_if_waiting_for_debugger(&mut self, context_group_id: i32) { assert_eq!(context_group_id, 1); self.count_run_message_loop_on_pause += 1; } fn generate_unique_id(&mut self) -> i64 { self.count_generate_unique_id += 1; self.count_generate_unique_id } } struct ChannelCounter { base: v8::inspector::ChannelBase, count_send_response: usize, count_send_notification: usize, count_flush_protocol_notifications: usize, } impl ChannelCounter { pub fn new() -> Self { Self { base: v8::inspector::ChannelBase::new::(), count_send_response: 0, count_send_notification: 0, count_flush_protocol_notifications: 0, } } } impl v8::inspector::ChannelImpl for ChannelCounter { fn base(&self) -> &v8::inspector::ChannelBase { &self.base } fn base_mut(&mut self) -> &mut v8::inspector::ChannelBase { &mut self.base } fn send_response( &mut self, call_id: i32, message: v8::UniquePtr, ) { println!( "send_response call_id {} message {}", call_id, message.unwrap().string() ); self.count_send_response += 1; } fn send_notification( &mut self, message: v8::UniquePtr, ) { println!("send_notification message {}", message.unwrap().string()); self.count_send_notification += 1; } fn flush_protocol_notifications(&mut self) { self.count_flush_protocol_notifications += 1; } } #[test] fn inspector_can_dispatch_method() { use v8::inspector::*; let message = String::from("Runtime.enable"); let message = &message.into_bytes()[..]; let string_view = StringView::from(message); assert!(V8InspectorSession::can_dispatch_method(string_view)); let message = String::from("Debugger.enable"); let message = &message.into_bytes()[..]; let string_view = StringView::from(message); assert!(V8InspectorSession::can_dispatch_method(string_view)); let message = String::from("Profiler.enable"); let message = &message.into_bytes()[..]; let string_view = StringView::from(message); assert!(V8InspectorSession::can_dispatch_method(string_view)); let message = String::from("HeapProfiler.enable"); let message = &message.into_bytes()[..]; let string_view = StringView::from(message); assert!(V8InspectorSession::can_dispatch_method(string_view)); let message = String::from("Console.enable"); let message = &message.into_bytes()[..]; let string_view = StringView::from(message); assert!(V8InspectorSession::can_dispatch_method(string_view)); let message = String::from("Schema.getDomains"); let message = &message.into_bytes()[..]; let string_view = StringView::from(message); assert!(V8InspectorSession::can_dispatch_method(string_view)); let message = String::from("Foo.enable"); let message = &message.into_bytes()[..]; let string_view = StringView::from(message); assert!(!V8InspectorSession::can_dispatch_method(string_view)); let message = String::from("Bar.enable"); let message = &message.into_bytes()[..]; let string_view = StringView::from(message); assert!(!V8InspectorSession::can_dispatch_method(string_view)); } #[test] fn inspector_dispatch_protocol_message() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); use v8::inspector::*; let mut default_client = ClientCounter::new(); let mut inspector = V8Inspector::create(isolate, &mut default_client); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let mut _scope = v8::ContextScope::new(scope, context); let name = b""; let name_view = StringView::from(&name[..]); inspector.context_created(context, 1, name_view); let mut channel = ChannelCounter::new(); let state = b"{}"; let state_view = StringView::from(&state[..]); let mut session = inspector.connect( 1, &mut channel, state_view, V8InspectorClientTrustLevel::Untrusted, ); let message = String::from( r#"{"id":1,"method":"Network.enable","params":{"maxPostDataSize":65536}}"#, ); let message = &message.into_bytes()[..]; let string_view = StringView::from(message); session.dispatch_protocol_message(string_view); assert_eq!(channel.count_send_response, 1); assert_eq!(channel.count_send_notification, 0); assert_eq!(channel.count_flush_protocol_notifications, 0); } #[test] fn inspector_schedule_pause_on_next_statement() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); use v8::inspector::*; let mut client = ClientCounter::new(); let mut inspector = V8Inspector::create(isolate, &mut client); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let mut channel = ChannelCounter::new(); let state = b"{}"; let state_view = StringView::from(&state[..]); let mut session = inspector.connect( 1, &mut channel, state_view, V8InspectorClientTrustLevel::FullyTrusted, ); let name = b""; let name_view = StringView::from(&name[..]); inspector.context_created(context, 1, name_view); // In order for schedule_pause_on_next_statement to work, it seems you need // to first enable the debugger. let message = String::from(r#"{"id":1,"method":"Debugger.enable"}"#); let message = &message.into_bytes()[..]; let message = StringView::from(message); session.dispatch_protocol_message(message); // The following commented out block seems to act similarly to // schedule_pause_on_next_statement. I'm not sure if they have the exact same // effect tho. // let message = String::from(r#"{"id":2,"method":"Debugger.pause"}"#); // let message = &message.into_bytes()[..]; // let message = StringView::from(message); // session.dispatch_protocol_message(&message); let reason = b""; let reason = StringView::from(&reason[..]); let detail = b""; let detail = StringView::from(&detail[..]); session.schedule_pause_on_next_statement(reason, detail); assert_eq!(channel.count_send_response, 1); assert_eq!(channel.count_send_notification, 0); assert_eq!(channel.count_flush_protocol_notifications, 0); assert_eq!(client.count_run_message_loop_on_pause, 0); assert_eq!(client.count_quit_message_loop_on_pause, 0); assert_eq!(client.count_run_if_waiting_for_debugger, 0); let r = eval(scope, "1+2").unwrap(); assert!(r.is_number()); assert_eq!(channel.count_send_response, 1); assert_eq!(channel.count_send_notification, 3); assert_eq!(channel.count_flush_protocol_notifications, 1); assert_eq!(client.count_run_message_loop_on_pause, 1); assert_eq!(client.count_quit_message_loop_on_pause, 0); assert_eq!(client.count_run_if_waiting_for_debugger, 0); assert_ne!(client.count_generate_unique_id, 0); } #[test] fn inspector_console_api_message() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); use v8::inspector::*; struct Client { base: V8InspectorClientBase, messages: Vec, } impl Client { fn new() -> Self { Self { base: V8InspectorClientBase::new::(), messages: Vec::new(), } } } impl V8InspectorClientImpl for Client { fn base(&self) -> &V8InspectorClientBase { &self.base } fn base_mut(&mut self) -> &mut V8InspectorClientBase { &mut self.base } fn console_api_message( &mut self, _context_group_id: i32, _level: i32, message: &StringView, _url: &StringView, _line_number: u32, _column_number: u32, _stack_trace: &mut V8StackTrace, ) { self.messages.push(message.to_string()); } } let mut client = Client::new(); let mut inspector = V8Inspector::create(isolate, &mut client); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let name = b""; let name_view = StringView::from(&name[..]); inspector.context_created(context, 1, name_view); let source = r#" console.log("one"); console.error("two"); console.trace("three"); "#; let _ = eval(scope, source).unwrap(); assert_eq!(client.messages, vec!["one", "two", "three"]); } #[test] fn context_from_object_template() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let object_templ = v8::ObjectTemplate::new(scope); let function_templ = v8::FunctionTemplate::new(scope, fortytwo_callback); let name = v8::String::new(scope, "f").unwrap(); object_templ.set(name.into(), function_templ.into()); let context = v8::Context::new_from_template(scope, object_templ); let scope = &mut v8::ContextScope::new(scope, context); let actual = eval(scope, "f()").unwrap(); let expected = v8::Integer::new(scope, 42); assert!(expected.strict_equals(actual)); } } #[test] fn take_heap_snapshot() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = r#" { class Eyecatcher {} const eyecatchers = globalThis.eyecatchers = []; for (let i = 0; i < 1e4; i++) eyecatchers.push(new Eyecatcher); } "#; let _ = eval(scope, source).unwrap(); let mut vec = Vec::::new(); scope.take_heap_snapshot(|chunk| { vec.extend_from_slice(chunk); true }); let s = std::str::from_utf8(&vec).unwrap(); assert!(s.contains("Eyecatcher")); } } #[test] fn test_prototype_api() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let obj = v8::Object::new(scope); let proto_obj = v8::Object::new(scope); let key_local: v8::Local = v8::String::new(scope, "test_proto_key").unwrap().into(); let value_local: v8::Local = v8::String::new(scope, "test_proto_value").unwrap().into(); proto_obj.set(scope, key_local, value_local); obj.set_prototype(scope, proto_obj.into()); assert!(obj .get_prototype(scope) .unwrap() .same_value(proto_obj.into())); let sub_gotten = obj.get(scope, key_local).unwrap(); assert!(sub_gotten.is_string()); assert_eq!(sub_gotten.to_rust_string_lossy(scope), "test_proto_value"); } { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let obj = v8::Object::new(scope); let null = v8::null(scope); obj.set_prototype(scope, null.into()); assert!(obj.get_prototype(scope).unwrap().is_null()); } { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let val = eval(scope, "({ __proto__: null })").unwrap(); let obj = val.to_object(scope).unwrap(); assert!(obj.get_prototype(scope).unwrap().is_null()); } } #[test] fn test_map_api() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let value = eval(scope, "new Map([['r','s'],['v',8]])").unwrap(); assert!(value.is_map()); assert!(value == v8::Local::::try_from(value).unwrap()); assert!(value != v8::Object::new(scope)); assert_eq!(v8::Local::::try_from(value).unwrap().size(), 2); let map = v8::Local::::try_from(value).unwrap(); assert_eq!(map.size(), 2); let map_array = map.as_array(scope); assert_eq!(map_array.length(), 4); assert!( map_array.get_index(scope, 0).unwrap() == v8::String::new(scope, "r").unwrap() ); assert!( map_array.get_index(scope, 1).unwrap() == v8::String::new(scope, "s").unwrap() ); assert!( map_array.get_index(scope, 2).unwrap() == v8::String::new(scope, "v").unwrap() ); assert!( map_array.get_index(scope, 3).unwrap() == v8::Number::new(scope, 8f64) ); } } #[test] fn test_object_get_property_names() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let js_test_str: v8::Local = v8::String::new(scope, "test").unwrap().into(); let js_proto_test_str: v8::Local = v8::String::new(scope, "proto_test").unwrap().into(); let js_test_symbol: v8::Local = eval(scope, "Symbol('test_symbol')").unwrap(); let js_null: v8::Local = v8::null(scope).into(); let js_sort_fn: v8::Local = eval(scope, "Array.prototype.sort") .unwrap() .try_into() .unwrap(); { let obj = v8::Object::new(scope); obj.set(scope, js_test_str, js_null); let proto_obj = v8::Object::new(scope); proto_obj.set(scope, js_proto_test_str, js_null); obj.set_prototype(scope, proto_obj.into()); let own_props = obj .get_own_property_names(scope, Default::default()) .unwrap(); assert_eq!(own_props.length(), 1); assert!(own_props.get_index(scope, 0).unwrap() == js_test_str); let proto_props = proto_obj .get_own_property_names(scope, Default::default()) .unwrap(); assert_eq!(proto_props.length(), 1); assert!(proto_props.get_index(scope, 0).unwrap() == js_proto_test_str); let all_props = obj.get_property_names(scope, Default::default()).unwrap(); js_sort_fn.call(scope, all_props.into(), &[]).unwrap(); assert_eq!(all_props.length(), 2); assert!(all_props.get_index(scope, 0).unwrap() == js_proto_test_str); assert!(all_props.get_index(scope, 1).unwrap() == js_test_str); } { let obj = v8::Object::new(scope); obj.set(scope, js_test_str, js_null); obj.set(scope, js_test_symbol, js_null); let own_props = obj .get_own_property_names(scope, Default::default()) .unwrap(); assert_eq!(own_props.length(), 1); assert!(own_props.get_index(scope, 0).unwrap() == js_test_str); } { let obj = v8::Object::new(scope); obj.set(scope, js_test_str, js_null); obj.set(scope, js_test_symbol, js_null); let own_props = obj .get_property_names( scope, v8::GetPropertyNamesArgs { mode: v8::KeyCollectionMode::IncludePrototypes, property_filter: v8::ONLY_ENUMERABLE | v8::SKIP_SYMBOLS, index_filter: v8::IndexFilter::IncludeIndices, key_conversion: v8::KeyConversionMode::KeepNumbers, }, ) .unwrap(); assert_eq!(own_props.length(), 1); assert!(own_props.get_index(scope, 0).unwrap() == js_test_str); } { let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let val = eval(scope, "({ 'a': 3, 2: 'b', '7': 'c' })").unwrap(); let obj = val.to_object(scope).unwrap(); { let own_props = obj .get_own_property_names(scope, Default::default()) .unwrap(); assert_eq!(own_props.length(), 3); assert!(own_props.get_index(scope, 0).unwrap().is_number()); assert_eq!( own_props.get_index(scope, 0).unwrap(), v8::Integer::new(scope, 2) ); assert!(own_props.get_index(scope, 1).unwrap().is_number()); assert_eq!( own_props.get_index(scope, 1).unwrap(), v8::Integer::new(scope, 7) ); assert!(own_props.get_index(scope, 2).unwrap().is_string()); assert_eq!( own_props.get_index(scope, 2).unwrap(), v8::String::new(scope, "a").unwrap() ); } { let own_props = obj .get_own_property_names( scope, v8::GetPropertyNamesArgsBuilder::new() .key_conversion(v8::KeyConversionMode::ConvertToString) .build(), ) .unwrap(); assert_eq!(own_props.length(), 3); assert!(own_props.get_index(scope, 0).unwrap().is_string()); assert_eq!( own_props.get_index(scope, 0).unwrap(), v8::String::new(scope, "2").unwrap() ); assert!(own_props.get_index(scope, 1).unwrap().is_string()); assert_eq!( own_props.get_index(scope, 1).unwrap(), v8::String::new(scope, "7").unwrap() ); assert!(own_props.get_index(scope, 2).unwrap().is_string()); assert_eq!( own_props.get_index(scope, 2).unwrap(), v8::String::new(scope, "a").unwrap() ); } { let own_props = obj .get_property_names( scope, v8::GetPropertyNamesArgsBuilder::new() .key_conversion(v8::KeyConversionMode::ConvertToString) .build(), ) .unwrap(); assert_eq!(own_props.length(), 3); assert!(own_props.get_index(scope, 0).unwrap().is_string()); assert_eq!( own_props.get_index(scope, 0).unwrap(), v8::String::new(scope, "2").unwrap() ); assert!(own_props.get_index(scope, 1).unwrap().is_string()); assert_eq!( own_props.get_index(scope, 1).unwrap(), v8::String::new(scope, "7").unwrap() ); assert!(own_props.get_index(scope, 2).unwrap().is_string()); assert_eq!( own_props.get_index(scope, 2).unwrap(), v8::String::new(scope, "a").unwrap() ); } } } #[test] fn module_snapshot() { let _setup_guard = setup(); let startup_data = { let mut snapshot_creator = v8::SnapshotCreator::new(None); // TODO(ry) this shouldn't be necessary. workaround unfinished business in // the scope type system. let mut isolate = unsafe { snapshot_creator.get_owned_isolate() }; { let scope = &mut v8::HandleScope::new(&mut isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source_text = v8::String::new( scope, "import 'globalThis.b = 42';\n\ globalThis.a = 3", ) .unwrap(); let origin = mock_script_origin(scope, "foo.js"); let source = v8::script_compiler::Source::new(source_text, Some(&origin)); let module = v8::script_compiler::compile_module(scope, source).unwrap(); assert_eq!(v8::ModuleStatus::Uninstantiated, module.get_status()); let script_id = module.script_id(); assert!(script_id.is_some()); let result = module.instantiate_module( scope, compile_specifier_as_module_resolve_callback, ); assert!(result.unwrap()); assert_eq!(v8::ModuleStatus::Instantiated, module.get_status()); assert_eq!(script_id, module.script_id()); let result = module.evaluate(scope); assert!(result.is_some()); assert_eq!(v8::ModuleStatus::Evaluated, module.get_status()); assert_eq!(script_id, module.script_id()); snapshot_creator.set_default_context(context); } std::mem::forget(isolate); // TODO(ry) this shouldn't be necessary. snapshot_creator .create_blob(v8::FunctionCodeHandling::Keep) .unwrap() }; assert!(startup_data.len() > 0); { let params = v8::Isolate::create_params().snapshot_blob(startup_data); let isolate = &mut v8::Isolate::new(params); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let true_val = v8::Boolean::new(scope, true).into(); let source = v8::String::new(scope, "a === 3").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); let result = script.run(scope).unwrap(); assert!(result.same_value(true_val)); let source = v8::String::new(scope, "b === 42").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); let result = script.run(scope).unwrap(); assert!(result.same_value(true_val)); } } } #[derive(Default)] struct TestHeapLimitState { near_heap_limit_callback_calls: u64, } extern "C" fn heap_limit_callback( data: *mut c_void, current_heap_limit: usize, _initial_heap_limit: usize, ) -> usize { let state = unsafe { &mut *(data as *mut TestHeapLimitState) }; state.near_heap_limit_callback_calls += 1; current_heap_limit * 2 // Avoid V8 OOM. } // This test might fail due to a bug in V8. The upstream bug report is at // https://bugs.chromium.org/p/v8/issues/detail?id=10843. #[test] fn heap_limits() { let _setup_guard = setup(); let params = v8::CreateParams::default().heap_limits(0, 10 << 20); // 10 MB. let isolate = &mut v8::Isolate::new(params); let mut test_state = TestHeapLimitState::default(); let state_ptr = &mut test_state as *mut _ as *mut c_void; isolate.add_near_heap_limit_callback(heap_limit_callback, state_ptr); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); // Allocate JavaScript arrays until V8 calls the near-heap-limit callback. // It takes about 50-200k iterations of this loop to get to that point. for _ in 0..1_000_000 { eval( scope, r#" "hello 🦕 world" .repeat(10) .split("🦕") .map((s) => s.repeat(100).split("o")) "#, ) .unwrap(); if test_state.near_heap_limit_callback_calls > 0 { break; } } assert_eq!(1, test_state.near_heap_limit_callback_calls); } #[test] fn heap_statistics() { let _setup_guard = setup(); let params = v8::CreateParams::default().heap_limits(0, 10 << 20); // 10 MB. let isolate = &mut v8::Isolate::new(params); let mut s = v8::HeapStatistics::default(); isolate.get_heap_statistics(&mut s); assert!(s.used_heap_size() > 0); assert!(s.total_heap_size() > 0); assert!(s.total_heap_size() >= s.used_heap_size()); assert!(s.heap_size_limit() > 0); assert!(s.heap_size_limit() >= s.total_heap_size()); assert!(s.malloced_memory() > 0); assert!(s.peak_malloced_memory() > 0); // This invariant broke somewhere between V8 versions 8.6.337 and 8.7.25. // TODO(piscisaureus): re-enable this assertion when the underlying V8 bug is // fixed. // assert!(s.peak_malloced_memory() >= s.malloced_memory()); assert_eq!(s.used_global_handles_size(), 0); assert_eq!(s.total_global_handles_size(), 0); assert_eq!(s.number_of_native_contexts(), 0); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let local = eval(scope, "").unwrap(); let _global = v8::Global::new(scope, local); scope.get_heap_statistics(&mut s); assert_ne!(s.used_global_handles_size(), 0); assert_ne!(s.total_global_handles_size(), 0); assert_ne!(s.number_of_native_contexts(), 0); } #[test] fn low_memory_notification() { let mut isolate = v8::Isolate::new(Default::default()); isolate.low_memory_notification(); } // Clippy thinks the return value doesn't need to be an Option, it's unaware // of the mapping that MapFnFrom does for ResolveModuleCallback. #[allow(clippy::unnecessary_wraps)] fn synthetic_evaluation_steps<'a>( context: v8::Local<'a, v8::Context>, module: v8::Local, ) -> Option> { let scope = &mut unsafe { v8::CallbackScope::new(context) }; let mut set = |name, value| { let name = v8::String::new(scope, name).unwrap(); let value = v8::Number::new(scope, value).into(); module .set_synthetic_module_export(scope, name, value) .unwrap(); }; set("a", 1.0); set("b", 2.0); { let scope = &mut v8::TryCatch::new(scope); let name = v8::String::new(scope, "does not exist").unwrap(); let value = v8::undefined(scope).into(); assert!(module.set_synthetic_module_export(scope, name, value) == None); assert!(scope.has_caught()); scope.reset(); } Some(v8::undefined(scope).into()) } #[test] fn synthetic_module() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let export_names = [ v8::String::new(scope, "a").unwrap(), v8::String::new(scope, "b").unwrap(), ]; let module_name = v8::String::new(scope, "synthetic module").unwrap(); let module = v8::Module::create_synthetic_module( scope, module_name, &export_names, synthetic_evaluation_steps, ); assert!(!module.is_source_text_module()); assert!(module.is_synthetic_module()); assert!(module.script_id().is_none()); assert_eq!(module.get_status(), v8::ModuleStatus::Uninstantiated); module .instantiate_module(scope, unexpected_module_resolve_callback) .unwrap(); assert_eq!(module.get_status(), v8::ModuleStatus::Instantiated); module.evaluate(scope).unwrap(); assert_eq!(module.get_status(), v8::ModuleStatus::Evaluated); let ns = v8::Local::::try_from(module.get_module_namespace()).unwrap(); let mut check = |name, value| { let name = v8::String::new(scope, name).unwrap().into(); let value = v8::Number::new(scope, value).into(); assert!(ns.get(scope, name).unwrap().strict_equals(value)); }; check("a", 1.0); check("b", 2.0); } #[allow(clippy::float_cmp)] #[test] fn date() { let time = 1_291_404_900_000.; // 2010-12-03 20:35:00 - Mees <3 let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let date = v8::Date::new(scope, time).unwrap(); assert_eq!(date.value_of(), time); let key = v8::String::new(scope, "d").unwrap(); context.global(scope).set(scope, key.into(), date.into()); let result = eval(scope, "d.toISOString()").unwrap(); let result = result.to_string(scope).unwrap(); let result = result.to_rust_string_lossy(scope); assert_eq!(result, "2010-12-03T19:35:00.000Z"); // V8 chops off fractions. let date = v8::Date::new(scope, std::f64::consts::PI).unwrap(); assert_eq!(date.value_of(), 3.0); assert_eq!(date.number_value(scope).unwrap(), 3.0); } #[test] fn symbol() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let desc = v8::String::new(scope, "a description").unwrap(); let s = v8::Symbol::new(scope, None); assert!(s.description(scope) == v8::undefined(scope)); let s = v8::Symbol::new(scope, Some(desc)); assert!(s.description(scope) == desc); let s_pub = v8::Symbol::for_global(scope, desc); assert!(s_pub.description(scope) == desc); assert!(s_pub != s); let s_pub2 = v8::Symbol::for_global(scope, desc); assert!(s_pub2 != s); assert!(s_pub == s_pub2); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let s = eval(scope, "Symbol.asyncIterator").unwrap(); assert!(s == v8::Symbol::get_async_iterator(scope)); } #[test] fn private() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let p = v8::Private::new(scope, None); assert!(p.name(scope) == v8::undefined(scope)); let name = v8::String::new(scope, "a name").unwrap(); let p = v8::Private::new(scope, Some(name)); assert!(p.name(scope) == name); let p_api = v8::Private::for_api(scope, Some(name)); assert!(p_api.name(scope) == name); assert!(p_api != p); let p_api2 = v8::Private::for_api(scope, Some(name)); assert!(p_api2 != p); assert!(p_api == p_api2); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let object = v8::Object::new(scope); let sentinel = v8::Object::new(scope).into(); assert!(!object.has_private(scope, p).unwrap()); assert!(object.get_private(scope, p).unwrap().is_undefined()); // True indicates that the operation didn't throw an // exception, not that it found and deleted a key. assert!(object.delete_private(scope, p).unwrap()); assert!(object.set_private(scope, p, sentinel).unwrap()); assert!(object.has_private(scope, p).unwrap()); assert!(object .get_private(scope, p) .unwrap() .strict_equals(sentinel)); assert!(object.delete_private(scope, p).unwrap()); assert!(!object.has_private(scope, p).unwrap()); assert!(object.get_private(scope, p).unwrap().is_undefined()); } #[test] fn bigint() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let b = v8::BigInt::new_from_u64(scope, 1337); assert_eq!(b.u64_value(), (1337, true)); let b = v8::BigInt::new_from_i64(scope, -1337); assert_eq!(b.i64_value(), (-1337, true)); let words = vec![10, 10]; let b = v8::BigInt::new_from_words(scope, false, &words).unwrap(); assert_eq!(b.i64_value(), (10, false)); let raw_b = eval(scope, "184467440737095516170n").unwrap(); assert!(b == raw_b); let b = v8::BigInt::new_from_words(scope, true, &words).unwrap(); assert_eq!(b.i64_value(), (-10, false)); let raw_b = eval(scope, "-184467440737095516170n").unwrap(); assert!(b == raw_b); let raw_b = v8::Local::::try_from(raw_b).unwrap(); let mut vec = Vec::new(); vec.resize(raw_b.word_count(), 0); assert_eq!(raw_b.to_words_array(&mut vec), (true, &mut [10, 10][..])); let mut vec = Vec::new(); vec.resize(1, 0); assert_eq!(raw_b.to_words_array(&mut vec), (true, &mut [10][..])); let mut vec = Vec::new(); vec.resize(20, 1337); assert_eq!(raw_b.to_words_array(&mut vec), (true, &mut [10, 10][..])); } // SerDes testing type ArrayBuffers = Vec>; struct Custom1Value<'a> { array_buffers: &'a mut ArrayBuffers, } impl<'a> Custom1Value<'a> { fn serializer<'s>( scope: &mut v8::HandleScope<'s>, array_buffers: &'a mut ArrayBuffers, ) -> v8::ValueSerializer<'a, 's> { v8::ValueSerializer::new(scope, Box::new(Self { array_buffers })) } fn deserializer<'s>( scope: &mut v8::HandleScope<'s>, data: &[u8], array_buffers: &'a mut ArrayBuffers, ) -> v8::ValueDeserializer<'a, 's> { v8::ValueDeserializer::new(scope, Box::new(Self { array_buffers }), data) } } impl<'a> v8::ValueSerializerImpl for Custom1Value<'a> { #[allow(unused_variables)] fn throw_data_clone_error<'s>( &mut self, scope: &mut v8::HandleScope<'s>, message: v8::Local<'s, v8::String>, ) { let error = v8::Exception::error(scope, message); scope.throw_exception(error); } #[allow(unused_variables)] fn get_shared_array_buffer_id<'s>( &mut self, scope: &mut v8::HandleScope<'s>, shared_array_buffer: v8::Local<'s, v8::SharedArrayBuffer>, ) -> Option { self .array_buffers .push(v8::SharedArrayBuffer::get_backing_store( &shared_array_buffer, )); Some((self.array_buffers.len() as u32) - 1) } fn write_host_object<'s>( &mut self, _scope: &mut v8::HandleScope<'s>, _object: v8::Local<'s, v8::Object>, value_serializer: &mut dyn v8::ValueSerializerHelper, ) -> Option { value_serializer.write_uint64(1); None } } impl<'a> v8::ValueDeserializerImpl for Custom1Value<'a> { #[allow(unused_variables)] fn get_shared_array_buffer_from_id<'s>( &mut self, scope: &mut v8::HandleScope<'s>, transfer_id: u32, ) -> Option> { let backing_store = self.array_buffers.get(transfer_id as usize).unwrap(); Some(v8::SharedArrayBuffer::with_backing_store( scope, backing_store, )) } fn read_host_object<'s>( &mut self, _scope: &mut v8::HandleScope<'s>, value_deserializer: &mut dyn v8::ValueDeserializerHelper, ) -> Option> { let mut value = 0; value_deserializer.read_uint64(&mut value); None } } #[test] fn value_serializer_and_deserializer() { use v8::ValueDeserializerHelper; use v8::ValueSerializerHelper; let _setup_guard = setup(); let mut array_buffers = ArrayBuffers::new(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let buffer; { let mut value_serializer = Custom1Value::serializer(scope, &mut array_buffers); value_serializer.write_header(); value_serializer.write_double(55.44); value_serializer.write_uint32(22); buffer = value_serializer.release(); } let mut double: f64 = 0.0; let mut int32: u32 = 0; { let mut value_deserializer = Custom1Value::deserializer(scope, &buffer, &mut array_buffers); assert_eq!(value_deserializer.read_header(context), Some(true)); assert!(value_deserializer.read_double(&mut double)); assert!(value_deserializer.read_uint32(&mut int32)); assert!(!value_deserializer.read_uint32(&mut int32)); } assert!((double - 55.44).abs() < f64::EPSILON); assert_eq!(int32, 22); } #[test] fn value_serializer_and_deserializer_js_objects() { use v8::ValueDeserializerHelper; use v8::ValueSerializerHelper; let buffer; let mut array_buffers = ArrayBuffers::new(); { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let objects: v8::Local = eval( scope, r#"[ undefined, true, false, null, 33, 44.444, 99999.55434344, "test", new String("test"), [1, 2, 3], {a: "tt", add: "tsqqqss"} ]"#, ) .unwrap(); let mut value_serializer = Custom1Value::serializer(scope, &mut array_buffers); value_serializer.write_header(); assert_eq!(value_serializer.write_value(context, objects), Some(true)); buffer = value_serializer.release(); } { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let mut value_deserializer = Custom1Value::deserializer(scope, &buffer, &mut array_buffers); assert_eq!(value_deserializer.read_header(context), Some(true)); let name = v8::String::new(scope, "objects").unwrap(); let objects: v8::Local = value_deserializer.read_value(context).unwrap(); drop(value_deserializer); context.global(scope).set(scope, name.into(), objects); let result: v8::Local = eval( scope, r#" { const compare = [ undefined, true, false, null, 33, 44.444, 99999.55434344, "test", new String("test"), [1, 2, 3], {a: "tt", add: "tsqqqss"} ]; let equal = true; function obj_isEquivalent(a, b) { if (a == null) return b == null; let aProps = Object.getOwnPropertyNames(a); let bProps = Object.getOwnPropertyNames(b); if (aProps.length != bProps.length) return false; for (let i = 0; i < aProps.length; i++) { let propName = aProps[i]; if (a[propName] !== b[propName]) return false; } return true; } function arr_isEquivalent(a, b) { if (a.length != b.length) return false; for (let i = 0; i < Math.max(a.length, b.length); i++) { if (a[i] !== b[i]) return false; } return true; } objects.forEach(function (item, index) { let other = compare[index]; if (Array.isArray(item)) { equal = equal && arr_isEquivalent(item, other); } else if (typeof item == 'object') { equal = equal && obj_isEquivalent(item, other); } else { equal = equal && (item == objects[index]); } }); equal.toString() } "#, ) .unwrap(); let expected = v8::String::new(scope, "true").unwrap(); assert!(expected.strict_equals(result)); } } #[test] fn value_serializer_and_deserializer_array_buffers() { let buffer; let mut array_buffers = ArrayBuffers::new(); { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let objects: v8::Local = eval( scope, r#"{ var sab = new SharedArrayBuffer(10); var arr = new Int8Array(sab); arr[3] = 4; sab }"#, ) .unwrap(); let mut value_serializer = Custom1Value::serializer(scope, &mut array_buffers); assert_eq!(value_serializer.write_value(context, objects), Some(true)); buffer = value_serializer.release(); } { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let mut value_deserializer = Custom1Value::deserializer(scope, &buffer, &mut array_buffers); let name = v8::String::new(scope, "objects").unwrap(); let objects: v8::Local = value_deserializer.read_value(context).unwrap(); drop(value_deserializer); context.global(scope).set(scope, name.into(), objects); let result: v8::Local = eval( scope, r#" { var arr = new Int8Array(objects); arr.toString() } "#, ) .unwrap(); let expected = v8::String::new(scope, "0,0,0,4,0,0,0,0,0,0").unwrap(); assert!(expected.strict_equals(result)); } } struct Custom2Value {} impl<'a> Custom2Value { fn serializer<'s>( scope: &mut v8::HandleScope<'s>, ) -> v8::ValueSerializer<'a, 's> { v8::ValueSerializer::new(scope, Box::new(Self {})) } } impl<'a> v8::ValueSerializerImpl for Custom2Value { #[allow(unused_variables)] fn throw_data_clone_error<'s>( &mut self, scope: &mut v8::HandleScope<'s>, message: v8::Local<'s, v8::String>, ) { let error = v8::Exception::error(scope, message); scope.throw_exception(error); } } #[test] fn value_serializer_not_implemented() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let scope = &mut v8::TryCatch::new(scope); let objects: v8::Local = eval( scope, r#"{ var sab = new SharedArrayBuffer(10); var arr = new Int8Array(sab); arr[3] = 4; sab }"#, ) .unwrap(); let mut value_serializer = Custom2Value::serializer(scope); assert_eq!(value_serializer.write_value(context, objects), None); assert!(scope.exception().is_some()); assert!(scope.stack_trace().is_some()); assert!(scope.message().is_some()); assert_eq!( scope .message() .unwrap() .get(scope) .to_rust_string_lossy(scope), "Uncaught Error: # could not be cloned." ); } // Flaky on aarch64-qemu (Stack corruption). #[cfg(not(target_os = "android"))] #[test] fn clear_kept_objects() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); isolate.set_microtasks_policy(v8::MicrotasksPolicy::Explicit); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let step1 = r#" var weakrefs = []; for (let i = 0; i < 424242; i++) weakrefs.push(new WeakRef({ i })); gc(); if (weakrefs.some(w => !w.deref())) throw "fail"; "#; let step2 = r#" gc(); if (weakrefs.every(w => w.deref())) throw "fail"; "#; eval(scope, step1).unwrap(); scope.clear_kept_objects(); eval(scope, step2).unwrap(); } #[test] fn wasm_streaming_callback() { thread_local! { static WS: RefCell> = RefCell::new(None); } let callback = |scope: &mut v8::HandleScope, url: v8::Local, ws: v8::WasmStreaming| { assert_eq!("https://example.com", url.to_rust_string_lossy(scope)); WS.with(|slot| assert!(slot.borrow_mut().replace(ws).is_none())); }; let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(v8::CreateParams::default()); isolate.set_wasm_streaming_callback(callback); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let script = r#" globalThis.result = null; WebAssembly .compileStreaming("https://example.com") .then(result => globalThis.result = result); "#; eval(scope, script).unwrap(); assert!(scope.has_pending_background_tasks()); let global = context.global(scope); let name = v8::String::new(scope, "result").unwrap().into(); assert!(global.get(scope, name).unwrap().is_null()); let mut ws = WS.with(|slot| slot.borrow_mut().take().unwrap()); assert!(global.get(scope, name).unwrap().is_null()); // MVP of WASM modules: contains only the magic marker and the version (1). ws.on_bytes_received(&[0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00]); assert!(global.get(scope, name).unwrap().is_null()); ws.set_url("https://example2.com"); assert!(global.get(scope, name).unwrap().is_null()); ws.finish(); assert!(!scope.has_pending_background_tasks()); assert!(global.get(scope, name).unwrap().is_null()); while v8::Platform::pump_message_loop( &v8::V8::get_current_platform(), scope, false, // don't block if there are no tasks ) {} // We did not set wasm resolve callback so V8 uses the default one that // runs microtasks automatically. let result = global.get(scope, name).unwrap(); assert!(result.is_wasm_module_object()); let wasm_module_object: v8::Local = result.try_into().unwrap(); let compiled_wasm_module = wasm_module_object.get_compiled_module(); assert_eq!(compiled_wasm_module.source_url(), "https://example2.com"); let script = r#" globalThis.result = null; WebAssembly .compileStreaming("https://example.com") .catch(result => globalThis.result = result); "#; eval(scope, script).unwrap(); let ws = WS.with(|slot| slot.borrow_mut().take().unwrap()); assert!(global.get(scope, name).unwrap().is_null()); let exception = v8::Object::new(scope).into(); // Can be anything. ws.abort(Some(exception)); // We did not set wasm resolve callback so V8 uses the default one that // runs microtasks automatically. while v8::Platform::pump_message_loop( &v8::V8::get_current_platform(), scope, false, // don't block if there are no tasks ) {} assert!(global.get(scope, name).unwrap().strict_equals(exception)); } #[test] fn unbound_script_conversion() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let unbound_script = { let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::String::new(scope, "'Hello ' + value").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); script.get_unbound_script(scope) }; { // Execute the script in another context. let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global_object = scope.get_current_context().global(scope); let key = v8::String::new(scope, "value").unwrap(); let value = v8::String::new(scope, "world").unwrap(); global_object.set(scope, key.into(), value.into()); let script = unbound_script.bind_to_current_context(scope); let result = script.run(scope).unwrap(); assert_eq!(result.to_rust_string_lossy(scope), "Hello world"); } } #[test] fn run_with_rust_allocator() { use std::sync::Arc; unsafe extern "C" fn allocate(count: &AtomicUsize, n: usize) -> *mut c_void { count.fetch_add(n, Ordering::SeqCst); Box::into_raw(vec![0u8; n].into_boxed_slice()) as *mut [u8] as *mut c_void } unsafe extern "C" fn allocate_uninitialized( count: &AtomicUsize, n: usize, ) -> *mut c_void { count.fetch_add(n, Ordering::SeqCst); let mut store: Vec> = Vec::with_capacity(n); store.set_len(n); Box::into_raw(store.into_boxed_slice()) as *mut [u8] as *mut c_void } unsafe extern "C" fn free(count: &AtomicUsize, data: *mut c_void, n: usize) { count.fetch_sub(n, Ordering::SeqCst); Box::from_raw(std::slice::from_raw_parts_mut(data as *mut u8, n)); } unsafe extern "C" fn reallocate( count: &AtomicUsize, prev: *mut c_void, oldlen: usize, newlen: usize, ) -> *mut c_void { count.fetch_add(newlen.wrapping_sub(oldlen), Ordering::SeqCst); let old_store = Box::from_raw(std::slice::from_raw_parts_mut(prev as *mut u8, oldlen)); let mut new_store = Vec::with_capacity(newlen); let copy_len = oldlen.min(newlen); new_store.extend_from_slice(&old_store[..copy_len]); new_store.resize(newlen, 0u8); Box::into_raw(new_store.into_boxed_slice()) as *mut [u8] as *mut c_void } unsafe extern "C" fn drop(count: *const AtomicUsize) { Arc::from_raw(count); } let vtable: &'static v8::RustAllocatorVtable = &v8::RustAllocatorVtable { allocate, allocate_uninitialized, free, reallocate, drop, }; let count = Arc::new(AtomicUsize::new(0)); let _setup_guard = setup(); let create_params = v8::CreateParams::default().array_buffer_allocator(unsafe { v8::new_rust_allocator(Arc::into_raw(count.clone()), vtable) }); let isolate = &mut v8::Isolate::new(create_params); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::String::new( scope, r#" for(let i = 0; i < 10; i++) new ArrayBuffer(1024 * i); "OK"; "#, ) .unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); let result = script.run(scope).unwrap(); assert_eq!(result.to_rust_string_lossy(scope), "OK"); } let mut stats = v8::HeapStatistics::default(); isolate.get_heap_statistics(&mut stats); let count_loaded = count.load(Ordering::SeqCst); assert!(count_loaded > 0); assert!(count_loaded <= stats.external_memory()); // Force a GC. isolate.low_memory_notification(); let count_loaded = count.load(Ordering::SeqCst); assert_eq!(count_loaded, 0); } #[test] fn oom_callback() { extern "C" fn oom_handler( _: *const std::os::raw::c_char, _: &v8::OomDetails, ) { unreachable!() } let _setup_guard = setup(); let params = v8::CreateParams::default().heap_limits(0, 1048576 * 8); let isolate = &mut v8::Isolate::new(params); isolate.set_oom_error_handler(oom_handler); // Don't attempt to trigger the OOM callback since we don't have a safe way to // recover from it. } #[test] fn prepare_stack_trace_callback() { thread_local! { static SITES: RefCell>> = RefCell::new(None); } let script = r#" function g() { throw new Error("boom") } function f() { g() } try { f() } catch (e) { e.stack } "#; let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); isolate.set_prepare_stack_trace_callback(callback); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let scope = &mut v8::TryCatch::new(scope); let result = eval(scope, script).unwrap(); assert_eq!(Some(42), result.uint32_value(scope)); let sites = SITES.with(|slot| slot.borrow_mut().take()).unwrap(); let sites = v8::Local::new(scope, sites); assert_eq!(3, sites.length()); let scripts = [ r#" if ("g" !== site.getFunctionName()) throw "fail"; if (2 !== site.getLineNumber()) throw "fail"; "#, r#" if ("f" !== site.getFunctionName()) throw "fail"; if (3 !== site.getLineNumber()) throw "fail"; "#, r#" if (null !== site.getFunctionName()) throw "fail"; if (5 !== site.getLineNumber()) throw "fail"; "#, ]; let global = context.global(scope); let name = v8::String::new(scope, "site").unwrap().into(); for i in 0..3 { let site = sites.get_index(scope, i).unwrap(); global.set(scope, name, site).unwrap(); let script = scripts[i as usize]; let result = eval(scope, script); assert!(result.is_some()); } fn callback<'s>( scope: &mut v8::HandleScope<'s>, error: v8::Local, sites: v8::Local, ) -> v8::Local<'s, v8::Value> { let message = v8::Exception::create_message(scope, error); let actual = message.get(scope).to_rust_string_lossy(scope); assert_eq!(actual, "Uncaught Error: boom"); SITES.with(|slot| { let mut slot = slot.borrow_mut(); assert!(slot.is_none()); *slot = Some(v8::Global::new(scope, sites)); }); v8::Integer::new(scope, 42).into() } } #[test] fn icu_date() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = r#" (new Date(Date.UTC(2020, 5, 26, 7, 0, 0))).toLocaleString("de-DE", { weekday: "long", year: "numeric", month: "long", day: "numeric", }); "#; let value = eval(scope, source).unwrap(); let date_de_val = v8::String::new(scope, "Freitag, 26. Juni 2020").unwrap(); assert!(value.is_string()); assert!(value.strict_equals(date_de_val.into())); } } #[test] fn icu_set_common_data_fail() { assert!(v8::icu::set_common_data_71(&[1, 2, 3]).is_err()); } #[test] fn icu_format() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); { let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = r#" new Intl.NumberFormat("ja-JP", { style: "currency", currency: "JPY" }).format( 1230000, ); "#; let value = eval(scope, source).unwrap(); let currency_jpy_val = v8::String::new(scope, "￥1,230,000").unwrap(); assert!(value.is_string()); assert!(value.strict_equals(currency_jpy_val.into())); } } #[test] fn icu_collator() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::String::new(scope, "new Intl.Collator('en-US')").unwrap(); let script = v8::Script::compile(scope, source, None).unwrap(); assert!(script.run(scope).is_some()); } fn create_module<'s>( scope: &mut v8::HandleScope<'s, v8::Context>, source: &str, code_cache: Option>, options: v8::script_compiler::CompileOptions, ) -> v8::Local<'s, v8::Module> { let source = v8::String::new(scope, source).unwrap(); let resource_name = v8::String::new(scope, "").unwrap(); let source_map_url = v8::undefined(scope); let script_origin = v8::ScriptOrigin::new( scope, resource_name.into(), 0, 0, false, 0, source_map_url.into(), false, false, true, ); let has_cache = code_cache.is_some(); let source = match code_cache { Some(x) => v8::script_compiler::Source::new_with_cached_data( source, Some(&script_origin), x, ), None => v8::script_compiler::Source::new(source, Some(&script_origin)), }; assert_eq!(source.get_cached_data().is_some(), has_cache); let module = v8::script_compiler::compile_module2( scope, source, options, v8::script_compiler::NoCacheReason::NoReason, ) .unwrap(); module } fn create_unbound_module_script<'s>( scope: &mut v8::HandleScope<'s, v8::Context>, source: &str, code_cache: Option>, ) -> v8::Local<'s, v8::UnboundModuleScript> { let module = create_module( scope, source, code_cache, v8::script_compiler::CompileOptions::NoCompileOptions, ); module.get_unbound_module_script(scope) } #[test] fn unbound_module_script_conversion() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let mut scope = v8::ContextScope::new(scope, context); create_unbound_module_script(&mut scope, "'Hello ' + value", None); } #[test] fn cached_data_version_tag() { // The value is unpredictable/unstable, as it is generated from a combined // hash of the V8 version number and select configuration flags. This test // asserts that it returns the same value twice in a row (the value ought to // be stable for a given v8 build), which also verifies the binding does not // result in a crash. assert_eq!( v8::script_compiler::cached_data_version_tag(), v8::script_compiler::cached_data_version_tag() ); } #[test] fn code_cache() { fn resolve_callback<'a>( _context: v8::Local<'a, v8::Context>, _specifier: v8::Local<'a, v8::String>, _import_assertions: v8::Local<'a, v8::FixedArray>, _referrer: v8::Local<'a, v8::Module>, ) -> Option> { None } const CODE: &str = "export const hello = 'world';"; let _setup_guard = setup(); let code_cache = { let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let mut scope = v8::ContextScope::new(scope, context); let unbound_module_script = create_unbound_module_script(&mut scope, CODE, None); unbound_module_script.create_code_cache().unwrap().to_vec() }; let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let mut scope = v8::ContextScope::new(scope, context); let module = create_module( &mut scope, CODE, Some(v8::CachedData::new(&code_cache)), v8::script_compiler::CompileOptions::ConsumeCodeCache, ); let mut scope = v8::HandleScope::new(&mut scope); module .instantiate_module(&mut scope, resolve_callback) .unwrap(); module.evaluate(&mut scope).unwrap(); let top = v8::Local::::try_from(module.get_module_namespace()).unwrap(); let key = v8::String::new(&mut scope, "hello").unwrap(); let value = v8::Local::::try_from(top.get(&mut scope, key.into()).unwrap()) .unwrap(); assert_eq!(&value.to_rust_string_lossy(&mut scope), "world"); } #[test] fn function_code_cache() { const CODE: &str = "return word.split('').reverse().join('');"; let _setup_guard = setup(); let code_cache = { let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::script_compiler::Source::new( v8::String::new(scope, CODE).unwrap(), None, ); let word = v8::String::new(scope, "word").unwrap(); let function = v8::script_compiler::compile_function( scope, source, &[word], &[], v8::script_compiler::CompileOptions::EagerCompile, v8::script_compiler::NoCacheReason::NoReason, ) .unwrap(); function.create_code_cache().unwrap() }; let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let source = v8::script_compiler::Source::new_with_cached_data( v8::String::new(scope, CODE).unwrap(), None, code_cache, ); let word = v8::String::new(scope, "word").unwrap(); let function = v8::script_compiler::compile_function( scope, source, &[word], &[], v8::script_compiler::CompileOptions::EagerCompile, v8::script_compiler::NoCacheReason::NoReason, ) .unwrap(); let input = v8::String::new(scope, "input").unwrap().into(); let expected = v8::String::new(scope, "tupni").unwrap(); let undefined = v8::undefined(scope).into(); assert_eq!(expected, function.call(scope, undefined, &[input]).unwrap()); } #[test] fn eager_compile_script() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let code = v8::String::new(scope, "1 + 1").unwrap(); let source = v8::script_compiler::Source::new(code, None); let script = v8::script_compiler::compile( scope, source, v8::script_compiler::CompileOptions::EagerCompile, v8::script_compiler::NoCacheReason::NoReason, ) .unwrap(); let ret = script.run(scope).unwrap(); assert_eq!(ret.uint32_value(scope).unwrap(), 2); } #[test] fn code_cache_script() { const CODE: &str = "1 + 1"; let _setup_guard = setup(); let code_cache = { let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let code = v8::String::new(scope, CODE).unwrap(); let source = v8::script_compiler::Source::new(code, None); let script = v8::script_compiler::compile_unbound_script( scope, source, v8::script_compiler::CompileOptions::EagerCompile, v8::script_compiler::NoCacheReason::NoReason, ) .unwrap(); script.create_code_cache().unwrap().to_vec() }; let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let code = v8::String::new(scope, CODE).unwrap(); let source = v8::script_compiler::Source::new_with_cached_data( code, None, v8::CachedData::new(&code_cache), ); let script = v8::script_compiler::compile( scope, source, v8::script_compiler::CompileOptions::ConsumeCodeCache, v8::script_compiler::NoCacheReason::NoReason, ) .unwrap(); let ret = script.run(scope).unwrap(); assert_eq!(ret.uint32_value(scope).unwrap(), 2); } #[test] fn compile_function() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let x = v8::Integer::new(scope, 42); let y = v8::Integer::new(scope, 1337); let argument = v8::String::new(scope, "x").unwrap(); let extension = v8::Object::new(scope); let name = v8::String::new(scope, "y").unwrap(); extension.set(scope, name.into(), y.into()).unwrap(); let source = v8::String::new(scope, "return x * y").unwrap(); let source = v8::script_compiler::Source::new(source, None); let function = v8::script_compiler::compile_function( scope, source, &[argument], &[extension], v8::script_compiler::CompileOptions::NoCompileOptions, v8::script_compiler::NoCacheReason::NoReason, ) .unwrap(); let undefined = v8::undefined(scope).into(); let result = function.call(scope, undefined, &[x.into()]).unwrap(); assert!(result.is_int32()); assert_eq!(42 * 1337, result.int32_value(scope).unwrap()); } #[test] fn external_strings() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); // Parse JSON from an external string let json_static = b"{\"a\": 1, \"b\": 2}"; let json_external = v8::String::new_external_onebyte_static(scope, json_static).unwrap(); let maybe_value = v8::json::parse(scope, json_external); assert!(maybe_value.is_some()); // Check length assert!(json_external.length() == 16); // Externality checks assert!(json_external.is_external()); assert!(json_external.is_external_onebyte()); assert!(!json_external.is_external_twobyte()); assert!(json_external.is_onebyte()); assert!(json_external.contains_only_onebyte()); // In & out let hello = v8::String::new_external_onebyte_static(scope, b"hello world").unwrap(); let rust_str = hello.to_rust_string_lossy(scope); assert_eq!(rust_str, "hello world"); // Externality checks assert!(hello.is_external()); assert!(hello.is_external_onebyte()); assert!(!hello.is_external_twobyte()); assert!(hello.is_onebyte()); assert!(hello.contains_only_onebyte()); // Two-byte static let two_byte = v8::String::new_external_twobyte_static( scope, &[0xDD95, 0x0020, 0xD83E, 0xDD95], ) .unwrap(); let rust_str = two_byte.to_rust_string_lossy(scope); assert_eq!(rust_str, "\u{FFFD} 🦕"); assert!(two_byte.length() == 4); // Externality checks assert!(two_byte.is_external()); assert!(!two_byte.is_external_onebyte()); assert!(two_byte.is_external_twobyte()); assert!(!two_byte.is_onebyte()); assert!(!two_byte.contains_only_onebyte()); // two-byte "internal" test let gradients = v8::String::new(scope, "∇gradients").unwrap(); assert!(!gradients.is_external()); assert!(!gradients.is_external_onebyte()); assert!(!gradients.is_external_twobyte()); assert!(!gradients.is_onebyte()); assert!(!gradients.contains_only_onebyte()); } #[test] fn counter_lookup_callback() { #[derive(Eq, PartialEq, Hash)] struct Name(*const c_char); struct Count(*mut i32); unsafe impl Send for Name {} unsafe impl Send for Count {} lazy_static! { static ref MAP: Arc>> = Arc::default(); } // |name| points to a static zero-terminated C string. extern "C" fn callback(name: *const c_char) -> *mut i32 { MAP .lock() .unwrap() .entry(Name(name)) .or_insert_with(|| Count(Box::leak(Box::new(0)))) .0 } let _setup_guard = setup(); let params = v8::CreateParams::default().counter_lookup_callback(callback); let isolate = &mut v8::Isolate::new(params); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let _ = eval(scope, "console.log(42);").unwrap(); let count = MAP .lock() .unwrap() .iter() .find_map(|(name, count)| { let name = unsafe { CStr::from_ptr(name.0) }; // Note: counter names start with a "c:" prefix. if "c:V8.CompilationCacheMisses" == name.to_string_lossy() { Some(unsafe { *count.0 }) } else { None } }) .unwrap(); assert_ne!(count, 0); } #[cfg(not(target_os = "android"))] #[test] fn compiled_wasm_module() { let _setup_guard = setup(); let compiled_module = { let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let wire_bytes = &[ 0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x00, 0x07, 0x03, 0x66, 0x6F, 0x6F, 0x62, 0x61, 0x72, ]; let module = v8::WasmModuleObject::compile(scope, wire_bytes).unwrap(); module.get_compiled_module() }; assert_eq!( compiled_module.get_wire_bytes_ref(), &[ 0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x00, 0x07, 0x03, 0x66, 0x6F, 0x6F, 0x62, 0x61, 0x72 ] ); assert_eq!(compiled_module.source_url(), "wasm://wasm/3e495052"); { let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let module = v8::WasmModuleObject::from_compiled_module(scope, &compiled_module) .unwrap(); let key = v8::String::new(scope, "module").unwrap().into(); global.set(scope, key, module.into()); let foo_ab: v8::Local = eval(scope, "WebAssembly.Module.customSections(module, 'foo')[0]") .unwrap() .try_into() .unwrap(); let foo_bs = foo_ab.get_backing_store(); let foo_section = unsafe { std::slice::from_raw_parts( foo_bs.data().unwrap().as_ptr() as *mut u8, foo_bs.byte_length(), ) }; assert_eq!(foo_section, b"bar"); } } #[test] fn function_names() { // Setup isolate let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); // Rust function fn callback( scope: &mut v8::HandleScope, _args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { rv.set(v8::Integer::new(scope, 42).into()) } // named v8 function { let key = v8::String::new(scope, "magicFn").unwrap(); let name = v8::String::new(scope, "fooBar").unwrap(); let tmpl = v8::FunctionTemplate::new(scope, callback); let func = tmpl.get_function(scope).unwrap(); func.set_name(name); let global = context.global(scope); global.set(scope, key.into(), func.into()); let is_42: v8::Local = eval(scope, "magicFn() === 42").unwrap().try_into().unwrap(); assert!(is_42.is_true()); let js_str: v8::Local = eval(scope, "magicFn.toString()") .unwrap() .try_into() .unwrap(); assert_eq!( js_str.to_rust_string_lossy(scope), "function fooBar() { [native code] }" ); let v8_name = func.get_name(scope); assert_eq!(v8_name.to_rust_string_lossy(scope), "fooBar"); } // anon v8 function { let key = v8::String::new(scope, "anonFn").unwrap(); let tmpl = v8::FunctionTemplate::new(scope, callback); let func = tmpl.get_function(scope).unwrap(); let global = context.global(scope); global.set(scope, key.into(), func.into()); let is_42: v8::Local = eval(scope, "anonFn() === 42").unwrap().try_into().unwrap(); assert!(is_42.is_true()); let js_str: v8::Local = eval(scope, "anonFn.toString()") .unwrap() .try_into() .unwrap(); assert_eq!( js_str.to_rust_string_lossy(scope), "function () { [native code] }" ); let v8_name = func.get_name(scope); assert_eq!(v8_name.to_rust_string_lossy(scope), ""); } } // https://github.com/denoland/rusty_v8/issues/849 #[test] fn backing_store_from_empty_boxed_slice() { let _setup_guard = setup(); let mut isolate = v8::Isolate::new(Default::default()); let mut scope = v8::HandleScope::new(&mut isolate); let context = v8::Context::new(&mut scope); let mut scope = v8::ContextScope::new(&mut scope, context); let store = v8::ArrayBuffer::new_backing_store_from_boxed_slice(Box::new([])) .make_shared(); let _ = v8::ArrayBuffer::with_backing_store(&mut scope, &store); } #[test] fn backing_store_from_empty_vec() { let _setup_guard = setup(); let mut isolate = v8::Isolate::new(Default::default()); let mut scope = v8::HandleScope::new(&mut isolate); let context = v8::Context::new(&mut scope); let mut scope = v8::ContextScope::new(&mut scope, context); let store = v8::ArrayBuffer::new_backing_store_from_vec(Vec::new()).make_shared(); let _ = v8::ArrayBuffer::with_backing_store(&mut scope, &store); } #[test] fn backing_store_data() { let _setup_guard = setup(); let mut isolate = v8::Isolate::new(Default::default()); let mut scope = v8::HandleScope::new(&mut isolate); let context = v8::Context::new(&mut scope); let mut scope = v8::ContextScope::new(&mut scope, context); let v = vec![1, 2, 3, 4, 5]; let len = v.len(); let store = v8::ArrayBuffer::new_backing_store_from_vec(v).make_shared(); let buf = v8::ArrayBuffer::with_backing_store(&mut scope, &store); assert_eq!(buf.byte_length(), len); assert_eq!( unsafe { std::slice::from_raw_parts_mut(buf.data() as *mut u8, len) }, &[1, 2, 3, 4, 5] ); } #[test] fn current_stack_trace() { // Setup isolate let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); // A simple JS-facing function that returns its call depth, max of 5 fn call_depth( scope: &mut v8::HandleScope, _args: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { let stack = v8::StackTrace::current_stack_trace(scope, 5).unwrap(); let count = stack.get_frame_count(); rv.set(v8::Integer::new(scope, count as i32).into()) } let key = v8::String::new(scope, "callDepth").unwrap(); let tmpl = v8::FunctionTemplate::new(scope, call_depth); let func = tmpl.get_function(scope).unwrap(); let global = context.global(scope); global.set(scope, key.into(), func.into()); let top_level = eval(scope, "callDepth()") .unwrap() .uint32_value(scope) .unwrap(); assert_eq!(top_level, 1); let nested = eval(scope, "(_ => (_ => callDepth())())()") .unwrap() .uint32_value(scope) .unwrap(); assert_eq!(nested, 3); let too_deep = eval( scope, "(_ => (_ => (_ => (_ => (_ => (_ => (_ => callDepth())())())())())())())()", ) .unwrap() .uint32_value(scope) .unwrap(); assert_eq!(too_deep, 5); } #[test] fn instance_of() { let _setup_guard = setup(); let mut isolate = v8::Isolate::new(Default::default()); let mut scope = v8::HandleScope::new(&mut isolate); let context = v8::Context::new(&mut scope); let mut scope = v8::ContextScope::new(&mut scope, context); let global = context.global(&mut scope); let array_name = v8::String::new(&mut scope, "Array").unwrap(); let array_constructor = global.get(&mut scope, array_name.into()).unwrap(); let array_constructor = v8::Local::::try_from(array_constructor).unwrap(); let array: v8::Local = v8::Array::new_with_elements(&mut scope, &[]).into(); assert!(array.instance_of(&mut scope, array_constructor).unwrap()); } #[test] fn weak_handle() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let weak = { let scope = &mut v8::HandleScope::new(scope); let local = v8::Object::new(scope); let weak = v8::Weak::new(scope, &local); assert!(!weak.is_empty()); assert_eq!(weak, local); assert_eq!(weak.to_local(scope), Some(local)); weak }; let scope = &mut v8::HandleScope::new(scope); eval(scope, "gc()").unwrap(); assert!(weak.is_empty()); assert_eq!(weak.to_local(scope), None); } #[test] fn finalizers() { use std::cell::Cell; use std::ops::Deref; use std::rc::Rc; let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); // The finalizer for a dropped Weak is never called. { { let scope = &mut v8::HandleScope::new(scope); let local = v8::Object::new(scope); let _ = v8::Weak::with_finalizer(scope, &local, Box::new(|_| unreachable!())); } let scope = &mut v8::HandleScope::new(scope); eval(scope, "gc()").unwrap(); } let finalizer_called = Rc::new(Cell::new(false)); let weak = { let scope = &mut v8::HandleScope::new(scope); let local = v8::Object::new(scope); // We use a channel to send data into the finalizer without having to worry // about lifetimes. let (tx, rx) = std::sync::mpsc::sync_channel::<( Rc>, Rc>, )>(1); let weak = Rc::new(v8::Weak::with_finalizer( scope, &local, Box::new(move |_| { let (weak, finalizer_called) = rx.try_recv().unwrap(); finalizer_called.set(true); assert!(weak.is_empty()); }), )); tx.send((weak.clone(), finalizer_called.clone())).unwrap(); assert!(!weak.is_empty()); assert_eq!(weak.deref(), &local); assert_eq!(weak.to_local(scope), Some(local)); weak }; let scope = &mut v8::HandleScope::new(scope); eval(scope, "gc()").unwrap(); assert!(weak.is_empty()); assert!(finalizer_called.get()); } #[test] fn weak_from_global() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = { let scope = &mut v8::HandleScope::new(scope); let object = v8::Object::new(scope); v8::Global::new(scope, object) }; let weak = v8::Weak::new(scope, &global); assert!(!weak.is_empty()); assert_eq!(weak.to_global(scope).unwrap(), global); drop(global); eval(scope, "gc()").unwrap(); assert!(weak.is_empty()); } #[test] fn weak_from_into_raw() { use std::cell::Cell; use std::rc::Rc; let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let finalizer_called = Rc::new(Cell::new(false)); assert_eq!(v8::Weak::::empty(scope).into_raw(), None); assert!(unsafe { v8::Weak::::from_raw(scope, None) }.is_empty()); // regular back and forth { finalizer_called.take(); let (weak1, weak2) = { let scope = &mut v8::HandleScope::new(scope); let local = v8::Object::new(scope); let weak = v8::Weak::new(scope, &local); let weak_with_finalizer = v8::Weak::with_finalizer( scope, &local, Box::new({ let finalizer_called = finalizer_called.clone(); move |_| { finalizer_called.set(true); } }), ); let raw1 = weak.into_raw(); let raw2 = weak_with_finalizer.into_raw(); assert!(raw1.is_some()); assert!(raw2.is_some()); let weak1 = unsafe { v8::Weak::from_raw(scope, raw1) }; let weak2 = unsafe { v8::Weak::from_raw(scope, raw2) }; assert_eq!(weak1.to_local(scope), Some(local)); assert_eq!(weak2.to_local(scope), Some(local)); assert!(!finalizer_called.get()); (weak1, weak2) }; eval(scope, "gc()").unwrap(); assert!(weak1.is_empty()); assert!(weak2.is_empty()); assert!(finalizer_called.get()); } // into_raw from a GC'd pointer { let weak = { let scope = &mut v8::HandleScope::new(scope); let local = v8::Object::new(scope); v8::Weak::new(scope, &local) }; assert!(!weak.is_empty()); eval(scope, "gc()").unwrap(); assert!(weak.is_empty()); assert_eq!(weak.into_raw(), None); } // It's fine if there's a GC while the Weak is leaked. { finalizer_called.take(); let (weak, weak_with_finalizer) = { let scope = &mut v8::HandleScope::new(scope); let local = v8::Object::new(scope); let weak = v8::Weak::new(scope, &local); let weak_with_finalizer = v8::Weak::with_finalizer( scope, &local, Box::new({ let finalizer_called = finalizer_called.clone(); move |_| { finalizer_called.set(true); } }), ); (weak, weak_with_finalizer) }; assert!(!weak.is_empty()); assert!(!weak_with_finalizer.is_empty()); assert!(!finalizer_called.get()); let raw1 = weak.into_raw(); let raw2 = weak_with_finalizer.into_raw(); assert!(raw1.is_some()); assert!(raw2.is_some()); eval(scope, "gc()").unwrap(); assert!(finalizer_called.get()); let weak1 = unsafe { v8::Weak::from_raw(scope, raw1) }; let weak2 = unsafe { v8::Weak::from_raw(scope, raw2) }; assert!(weak1.is_empty()); assert!(weak2.is_empty()); } // Leaking a Weak will not crash the isolate. { let scope = &mut v8::HandleScope::new(scope); let local = v8::Object::new(scope); v8::Weak::new(scope, local).into_raw(); v8::Weak::with_finalizer(scope, local, Box::new(|_| {})).into_raw(); eval(scope, "gc()").unwrap(); } eval(scope, "gc()").unwrap(); } #[test] fn drop_weak_from_raw_in_finalizer() { use std::cell::Cell; use std::rc::Rc; let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let weak_ptr = Rc::new(Cell::new(None)); let finalized = Rc::new(Cell::new(false)); { let scope = &mut v8::HandleScope::new(scope); let local = v8::Object::new(scope); let weak = v8::Weak::with_finalizer( scope, &local, Box::new({ let weak_ptr = weak_ptr.clone(); let finalized = finalized.clone(); move |isolate| { let weak_ptr = weak_ptr.get().unwrap(); let weak: v8::Weak = unsafe { v8::Weak::from_raw(isolate, Some(weak_ptr)) }; drop(weak); finalized.set(true); } }), ); weak_ptr.set(weak.into_raw()); } assert!(!finalized.get()); eval(scope, "gc()").unwrap(); assert!(finalized.get()); } #[test] fn finalizer_on_global_object() { use std::cell::Cell; use std::rc::Rc; let _setup_guard = setup(); let weak; let finalized = Rc::new(Cell::new(false)); { let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global_object = context.global(scope); weak = v8::Weak::with_finalizer( scope, global_object, Box::new({ let finalized = finalized.clone(); move |_| finalized.set(true) }), ); } assert!(finalized.get()); drop(weak); } #[test] fn finalizer_on_kept_global() { // If a global is kept alive after an isolate is dropped, any finalizers won't // be called. use std::cell::Cell; use std::rc::Rc; let _setup_guard = setup(); let global; let weak; let finalized = Rc::new(Cell::new(false)); { let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let object = v8::Object::new(scope); global = v8::Global::new(scope, &object); weak = v8::Weak::with_finalizer( scope, &object, Box::new({ let finalized = finalized.clone(); move |_| finalized.set(true) }), ) } assert!(weak.is_empty()); assert!(!finalized.get()); drop(weak); drop(global); } #[test] fn host_create_shadow_realm_context_callback() { let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); { let tc_scope = &mut v8::TryCatch::new(scope); assert!(eval(tc_scope, "new ShadowRealm()").is_none()); assert!(tc_scope.has_caught()); } struct CheckData { callback_called: bool, main_context: v8::Global, } let main_context = v8::Global::new(scope, context); scope.set_slot(CheckData { callback_called: false, main_context, }); scope.set_host_create_shadow_realm_context_callback(|scope| { let main_context = { let data = scope.get_slot_mut::().unwrap(); data.callback_called = true; data.main_context.clone() }; assert_eq!(scope.get_current_context(), main_context); // Can't return None without throwing. let message = v8::String::new(scope, "Unsupported").unwrap(); let exception = v8::Exception::type_error(scope, message); scope.throw_exception(exception); None }); { let tc_scope = &mut v8::TryCatch::new(scope); assert!(eval(tc_scope, "new ShadowRealm()").is_none()); assert!(tc_scope.has_caught()); assert!(tc_scope.get_slot::().unwrap().callback_called); } scope.set_host_create_shadow_realm_context_callback(|scope| { let main_context = { let data = scope.get_slot_mut::().unwrap(); data.callback_called = true; data.main_context.clone() }; assert_eq!(scope.get_current_context(), main_context); let new_context = v8::Context::new(scope); { let scope = &mut v8::ContextScope::new(scope, new_context); let global = new_context.global(scope); let key = v8::String::new(scope, "test").unwrap(); let value = v8::Integer::new(scope, 42); global.set(scope, key.into(), value.into()).unwrap(); } Some(new_context) }); let value = eval(scope, "new ShadowRealm().evaluate(`globalThis.test`)").unwrap(); assert_eq!(value.uint32_value(scope), Some(42)); assert!(scope.get_slot::().unwrap().callback_called); } #[test] fn test_fast_calls() { static mut WHO: &str = "none"; fn fast_fn(a: u32, b: u32) -> u32 { unsafe { WHO = "fast" }; a + b } pub struct FastTest; impl fast_api::FastFunction for FastTest { fn args(&self) -> &'static [fast_api::Type] { &[fast_api::Type::Uint32, fast_api::Type::Uint32] } fn return_type(&self) -> fast_api::CType { fast_api::CType::Uint32 } fn function(&self) -> *const c_void { fast_fn as _ } } fn slow_fn( scope: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { unsafe { WHO = "slow" }; rv.set(v8::Boolean::new(scope, false).into()); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let template = v8::FunctionTemplate::builder(slow_fn).build_fast(scope, &FastTest, None); let name = v8::String::new(scope, "func").unwrap(); let value = template.get_function(scope).unwrap(); global.set(scope, name.into(), value.into()).unwrap(); let source = r#" function f(x, y) { return func(x, y); } %PrepareFunctionForOptimization(f); f(1, 2); "#; eval(scope, source).unwrap(); assert_eq!("slow", unsafe { WHO }); let source = r#" %OptimizeFunctionOnNextCall(f); f(1, 2); "#; eval(scope, source).unwrap(); assert_eq!("fast", unsafe { WHO }); } #[test] fn test_fast_calls_sequence() { static mut WHO: &str = "none"; fn fast_fn( _recv: v8::Local, a: u32, b: u32, array: v8::Local, ) -> u32 { unsafe { WHO = "fast" }; assert_eq!(array.length(), 2); a + b + array.length() } pub struct FastTest; impl fast_api::FastFunction for FastTest { fn args(&self) -> &'static [fast_api::Type] { &[ fast_api::Type::V8Value, fast_api::Type::Uint32, fast_api::Type::Uint32, fast_api::Type::Sequence(fast_api::CType::Void), ] } fn return_type(&self) -> fast_api::CType { fast_api::CType::Uint32 } fn function(&self) -> *const c_void { fast_fn as _ } } fn slow_fn( scope: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { unsafe { WHO = "slow" }; rv.set(v8::Boolean::new(scope, false).into()); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let template = v8::FunctionTemplate::builder(slow_fn).build_fast(scope, &FastTest, None); let name = v8::String::new(scope, "func").unwrap(); let value = template.get_function(scope).unwrap(); global.set(scope, name.into(), value.into()).unwrap(); let source = r#" function f(x, y, data) { return func(x, y, data); } %PrepareFunctionForOptimization(f); const arr = [3, 4]; f(1, 2, arr); "#; eval(scope, source).unwrap(); assert_eq!("slow", unsafe { WHO }); let source = r#" %OptimizeFunctionOnNextCall(f); f(1, 2, arr); "#; eval(scope, source).unwrap(); assert_eq!("fast", unsafe { WHO }); } #[test] fn test_fast_calls_arraybuffer() { static mut WHO: &str = "none"; fn fast_fn( _recv: v8::Local, a: u32, b: u32, data: *const fast_api::FastApiTypedArray, ) -> u32 { unsafe { WHO = "fast" }; a + b + unsafe { &*data }.get(0) } pub struct FastTest; impl fast_api::FastFunction for FastTest { fn args(&self) -> &'static [fast_api::Type] { &[ fast_api::Type::V8Value, fast_api::Type::Uint32, fast_api::Type::Uint32, fast_api::Type::TypedArray(fast_api::CType::Uint32), ] } fn return_type(&self) -> fast_api::CType { fast_api::CType::Uint32 } fn function(&self) -> *const c_void { fast_fn as _ } } fn slow_fn( scope: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { unsafe { WHO = "slow" }; rv.set(v8::Boolean::new(scope, false).into()); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let template = v8::FunctionTemplate::builder(slow_fn).build_fast(scope, &FastTest, None); let name = v8::String::new(scope, "func").unwrap(); let value = template.get_function(scope).unwrap(); global.set(scope, name.into(), value.into()).unwrap(); let source = r#" function f(x, y, data) { return func(x, y, data); } %PrepareFunctionForOptimization(f); const arr = new Uint32Array([3, 4]); f(1, 2, arr); "#; eval(scope, source).unwrap(); assert_eq!("slow", unsafe { WHO }); let source = r#" %OptimizeFunctionOnNextCall(f); f(1, 2, arr); "#; eval(scope, source).unwrap(); assert_eq!("fast", unsafe { WHO }); } #[test] fn test_fast_calls_typedarray() { static mut WHO: &str = "none"; fn fast_fn( _recv: v8::Local, data: *const fast_api::FastApiTypedArray, ) -> u32 { unsafe { WHO = "fast" }; let first = unsafe { &*data }.get(0); let second = unsafe { &*data }.get(1); let third = unsafe { &*data }.get(2); assert_eq!(first, 4); assert_eq!(second, 5); assert_eq!(third, 6); let sum = first + second + third; sum.into() } pub struct FastTest; impl fast_api::FastFunction for FastTest { fn args(&self) -> &'static [fast_api::Type] { &[ fast_api::Type::V8Value, fast_api::Type::TypedArray(fast_api::CType::Uint8), ] } fn return_type(&self) -> fast_api::CType { fast_api::CType::Uint32 } fn function(&self) -> *const c_void { fast_fn as _ } } fn slow_fn( scope: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { unsafe { WHO = "slow" }; rv.set(v8::Boolean::new(scope, false).into()); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let template = v8::FunctionTemplate::builder(slow_fn).build_fast(scope, &FastTest, None); let name = v8::String::new(scope, "func").unwrap(); let value = template.get_function(scope).unwrap(); global.set(scope, name.into(), value.into()).unwrap(); let source = r#" function f(data) { return func(data); } %PrepareFunctionForOptimization(f); const arr = new Uint8Array([4, 5, 6]); f(arr); "#; eval(scope, source).unwrap(); assert_eq!("slow", unsafe { WHO }); let source = r#" %OptimizeFunctionOnNextCall(f); const result = f(arr); if (result != 15) { throw new Error("wrong result"); } "#; eval(scope, source).unwrap(); assert_eq!("fast", unsafe { WHO }); } #[test] fn test_fast_calls_reciever() { const V8_WRAPPER_TYPE_INDEX: i32 = 0; const V8_WRAPPER_OBJECT_INDEX: i32 = 1; static mut WHO: &str = "none"; fn fast_fn(recv: v8::Local) -> u32 { unsafe { WHO = "fast"; let embedder_obj = recv.get_aligned_pointer_from_internal_field(V8_WRAPPER_OBJECT_INDEX); let i = *(embedder_obj as *const u32); assert_eq!(i, 69); i } } pub struct FastTest; impl fast_api::FastFunction for FastTest { fn args(&self) -> &'static [fast_api::Type] { &[fast_api::Type::V8Value] } fn return_type(&self) -> fast_api::CType { fast_api::CType::Uint32 } fn function(&self) -> *const c_void { fast_fn as _ } } fn slow_fn( scope: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { unsafe { WHO = "slow" }; rv.set(v8::Boolean::new(scope, false).into()); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new( v8::CreateParams::default().embedder_wrapper_type_info_offsets( V8_WRAPPER_TYPE_INDEX, V8_WRAPPER_OBJECT_INDEX, ), ); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let object_template = v8::ObjectTemplate::new(scope); assert!(object_template .set_internal_field_count((V8_WRAPPER_OBJECT_INDEX + 1) as usize)); let obj = object_template.new_instance(scope).unwrap(); let embedder_obj = Box::into_raw(Box::new(69u32)); obj.set_aligned_pointer_in_internal_field( V8_WRAPPER_OBJECT_INDEX, embedder_obj as _, ); let template = v8::FunctionTemplate::builder(slow_fn).build_fast(scope, &FastTest, None); let name = v8::String::new(scope, "method").unwrap(); let value = template.get_function(scope).unwrap(); obj.set(scope, name.into(), value.into()).unwrap(); let obj_str = v8::String::new(scope, "obj").unwrap(); let global = context.global(scope); global.set(scope, obj_str.into(), obj.into()).unwrap(); let source = r#" function f() { return obj.method(); } %PrepareFunctionForOptimization(f); f(); "#; eval(scope, source).unwrap(); assert_eq!("slow", unsafe { WHO }); let source = r#" %OptimizeFunctionOnNextCall(f); f(); "#; eval(scope, source).unwrap(); assert_eq!("fast", unsafe { WHO }); } #[test] fn test_fast_calls_overload() { static mut WHO: &str = "none"; fn fast_fn( _recv: v8::Local, data: *const fast_api::FastApiTypedArray, ) { unsafe { WHO = "fast_buf" }; let buf = unsafe { &*data }; assert_eq!(buf.length, 2); assert_eq!(buf.get(0), 6); assert_eq!(buf.get(1), 9); } fn fast_fn2(_recv: v8::Local, data: v8::Local) { unsafe { WHO = "fast_array" }; assert_eq!(data.length(), 2); } pub struct FastTest; impl fast_api::FastFunction for FastTest { fn args(&self) -> &'static [fast_api::Type] { &[ fast_api::Type::V8Value, fast_api::Type::TypedArray(fast_api::CType::Uint32), ] } fn function(&self) -> *const c_void { fast_fn as _ } } pub struct FastTest2; impl fast_api::FastFunction for FastTest2 { fn args(&self) -> &'static [fast_api::Type] { &[ fast_api::Type::V8Value, fast_api::Type::Sequence(fast_api::CType::Void), ] } fn function(&self) -> *const c_void { fast_fn2 as _ } } fn slow_fn( scope: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { unsafe { WHO = "slow" }; rv.set(v8::Boolean::new(scope, false).into()); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let template = v8::FunctionTemplate::builder(slow_fn).build_fast( scope, &FastTest, Some(&FastTest2), ); let name = v8::String::new(scope, "func").unwrap(); let value = template.get_function(scope).unwrap(); global.set(scope, name.into(), value.into()).unwrap(); let source = r#" function f(data) { return func(data); } %PrepareFunctionForOptimization(f); const arr = [6, 9]; const buf = new Uint32Array(arr); f(buf); f(arr); "#; eval(scope, source).unwrap(); assert_eq!("slow", unsafe { WHO }); let source = r#" %OptimizeFunctionOnNextCall(f); f(buf); "#; eval(scope, source).unwrap(); assert_eq!("fast_buf", unsafe { WHO }); let source = r#" %OptimizeFunctionOnNextCall(f); f(arr); "#; eval(scope, source).unwrap(); assert_eq!("fast_array", unsafe { WHO }); } #[test] fn test_fast_calls_callback_options_fallback() { static mut WHO: &str = "none"; fn fast_fn( _recv: v8::Local, options: *mut fast_api::FastApiCallbackOptions, ) { if unsafe { WHO == "fast" } { let options = unsafe { &mut *options }; options.fallback = true; // Go back to slow path. } else { unsafe { WHO = "fast" }; } } pub struct FastTest; impl fast_api::FastFunction for FastTest { fn args(&self) -> &'static [fast_api::Type] { &[fast_api::Type::V8Value, fast_api::Type::CallbackOptions] } fn function(&self) -> *const c_void { fast_fn as _ } } fn slow_fn( scope: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { unsafe { WHO = "slow" }; rv.set(v8::Boolean::new(scope, false).into()); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let template = v8::FunctionTemplate::builder(slow_fn).build_fast(scope, &FastTest, None); let name = v8::String::new(scope, "func").unwrap(); let value = template.get_function(scope).unwrap(); global.set(scope, name.into(), value.into()).unwrap(); let source = r#" function f() { return func(); } %PrepareFunctionForOptimization(f); f(); "#; eval(scope, source).unwrap(); assert_eq!("slow", unsafe { WHO }); let source = r#" %OptimizeFunctionOnNextCall(f); f(); "#; eval(scope, source).unwrap(); assert_eq!("fast", unsafe { WHO }); let source = r#" f(); // Second call fallbacks back to slow path. "#; eval(scope, source).unwrap(); assert_eq!("slow", unsafe { WHO }); } #[test] fn test_fast_calls_callback_options_data() { static mut DATA: bool = false; unsafe fn fast_fn( _recv: v8::Local, options: *mut fast_api::FastApiCallbackOptions, ) { let options = &mut *options; if !options.data.data.is_external() { options.fallback = true; return; } let data = v8::Local::::cast(options.data.data); let data = &mut *(data.value() as *mut bool); *data = true; } pub struct FastTest; impl fast_api::FastFunction for FastTest { fn args(&self) -> &'static [fast_api::Type] { &[fast_api::Type::V8Value, fast_api::Type::CallbackOptions] } fn function(&self) -> *const c_void { fast_fn as _ } } fn slow_fn( scope: &mut v8::HandleScope, _: v8::FunctionCallbackArguments, mut rv: v8::ReturnValue, ) { rv.set(v8::Boolean::new(scope, false).into()); } let _setup_guard = setup(); let isolate = &mut v8::Isolate::new(Default::default()); let scope = &mut v8::HandleScope::new(isolate); let context = v8::Context::new(scope); let scope = &mut v8::ContextScope::new(scope, context); let global = context.global(scope); let external = v8::External::new(scope, unsafe { &mut DATA as *mut bool as *mut c_void }); let template = v8::FunctionTemplate::builder(slow_fn) .data(external.into()) .build_fast(scope, &FastTest, None); let name = v8::String::new(scope, "func").unwrap(); let value = template.get_function(scope).unwrap(); global.set(scope, name.into(), value.into()).unwrap(); let source = r#" function f() { return func(); } %PrepareFunctionForOptimization(f); f(); "#; eval(scope, source).unwrap(); assert!(unsafe { !DATA }); let source = r#" %OptimizeFunctionOnNextCall(f); f(); "#; eval(scope, source).unwrap(); assert!(unsafe { DATA }); }