mirror of
https://github.com/denoland/deno.git
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193 lines
6.5 KiB
Rust
193 lines
6.5 KiB
Rust
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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use serde::{Deserialize, Serialize};
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use serde_v8::utils::{js_exec, v8_do};
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use serde_v8::Result;
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#[derive(Deserialize)]
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struct MagicOp<'s> {
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#[allow(unused)]
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pub a: u64,
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#[allow(unused)]
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pub b: u64,
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pub c: serde_v8::Value<'s>,
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#[allow(unused)]
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pub operator: Option<String>,
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}
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#[derive(Serialize)]
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struct MagicContainer<'s> {
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pub magic: bool,
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pub contains: serde_v8::Value<'s>,
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}
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#[test]
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fn magic_basic() {
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v8_do(|| {
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let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
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let handle_scope = &mut v8::HandleScope::new(isolate);
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let context = v8::Context::new(handle_scope);
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let scope = &mut v8::ContextScope::new(handle_scope, context);
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// Decode
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let v = js_exec(scope, "({a: 1, b: 3, c: 'abracadabra'})");
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let mop: MagicOp = serde_v8::from_v8(scope, v).unwrap();
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// Check string
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let v8_value: v8::Local<v8::Value> = mop.c.into();
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let vs = v8::Local::<v8::String>::try_from(v8_value).unwrap();
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let s = vs.to_rust_string_lossy(scope);
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assert_eq!(s, "abracadabra");
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// Encode
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let container = MagicContainer {
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magic: true,
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contains: v.into(),
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};
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let vc = serde_v8::to_v8(scope, container).unwrap();
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// JSON stringify & check
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let json = v8::json::stringify(scope, vc).unwrap();
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let s2 = json.to_rust_string_lossy(scope);
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assert_eq!(
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s2,
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r#"{"magic":true,"contains":{"a":1,"b":3,"c":"abracadabra"}}"#
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);
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})
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}
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#[test]
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fn magic_buffer() {
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v8_do(|| {
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// Init isolate
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let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
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let handle_scope = &mut v8::HandleScope::new(isolate);
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let context = v8::Context::new(handle_scope);
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let scope = &mut v8::ContextScope::new(handle_scope, context);
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let global = context.global(scope);
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// Simple buffer
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let v8_array = js_exec(scope, "new Uint8Array([1,2,3,4,5])");
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let zbuf: serde_v8::ZeroCopyBuf =
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serde_v8::from_v8(scope, v8_array).unwrap();
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assert_eq!(&*zbuf, &[1, 2, 3, 4, 5]);
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// Multi buffers
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let v8_arrays =
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js_exec(scope, "[new Uint8Array([1,2]), new Uint8Array([3,4,5])]");
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let (z1, z2): (serde_v8::ZeroCopyBuf, serde_v8::ZeroCopyBuf) =
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serde_v8::from_v8(scope, v8_arrays).unwrap();
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assert_eq!(&*z1, &[1, 2]);
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assert_eq!(&*z2, &[3, 4, 5]);
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// Wrapped in option, like our current op-ABI
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let v8_array = js_exec(scope, "new Uint8Array([1,2,3,4,5])");
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let zbuf: Option<serde_v8::ZeroCopyBuf> =
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serde_v8::from_v8(scope, v8_array).unwrap();
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assert_eq!(&*zbuf.unwrap(), &[1, 2, 3, 4, 5]);
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// Observe mutation in JS
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let v8_array = js_exec(scope, "new Uint8Array([1,2,3,4,5])");
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let mut zbuf: serde_v8::ZeroCopyBuf =
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serde_v8::from_v8(scope, v8_array).unwrap();
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let key = serde_v8::to_v8(scope, "t1").unwrap();
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global.set(scope, key, v8_array);
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(&mut *zbuf)[2] = 42;
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let eq = js_exec(scope, "t1[2] === 42");
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assert!(eq.is_true());
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// Shared buffers
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let v8_array =
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js_exec(scope, "new Uint8Array(new SharedArrayBuffer([1,2,3,4,5]))");
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let zbuf: Result<serde_v8::ZeroCopyBuf> =
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serde_v8::from_v8(scope, v8_array);
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assert!(zbuf.is_err());
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// Serialization
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let buf: Vec<u8> = vec![1, 2, 3, 99, 5];
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let zbuf: serde_v8::ZeroCopyBuf = buf.into();
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let v8_value = serde_v8::to_v8(scope, zbuf).unwrap();
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let key = serde_v8::to_v8(scope, "t2").unwrap();
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global.set(scope, key, v8_value);
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let eq = js_exec(scope, "t2[3] === 99");
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assert!(eq.is_true());
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// Composite Serialization
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#[derive(serde::Serialize)]
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struct Wrapper {
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a: serde_v8::ZeroCopyBuf,
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b: serde_v8::ZeroCopyBuf,
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}
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let buf1: Vec<u8> = vec![1, 2, 33, 4, 5];
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let buf2: Vec<u8> = vec![5, 4, 3, 2, 11];
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let wrapped = Wrapper {
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a: buf1.into(),
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b: buf2.into(),
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};
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let v8_value = serde_v8::to_v8(scope, wrapped).unwrap();
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let key = serde_v8::to_v8(scope, "t3").unwrap();
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global.set(scope, key, v8_value);
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let eq = js_exec(scope, "t3.a[2] === 33");
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assert!(eq.is_true());
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let eq = js_exec(scope, "t3.b[4] === 11");
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assert!(eq.is_true());
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// ZeroCopyBuf as bytes::Bytes
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let v8_array = js_exec(scope, "new Uint8Array([1,2,3,4,5])");
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let zbuf: serde_v8::ZeroCopyBuf =
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serde_v8::from_v8(scope, v8_array).unwrap();
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let buf: bytes::Bytes = zbuf.into();
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assert_eq!(buf, bytes::Bytes::from_static(&[1, 2, 3, 4, 5]));
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assert_eq!(buf, bytes::Bytes::from_static(&[1, 2, 3, 4, 5]));
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assert_eq!(buf.slice(0..2), bytes::Bytes::from_static(&[1, 2]));
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assert_eq!(buf.slice(2..), bytes::Bytes::from_static(&[3, 4, 5]));
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// We're specifically testing that slices are preserved post-clone
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#[allow(clippy::redundant_clone)]
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let buf2 = buf.slice(2..).clone();
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assert_eq!(buf2, bytes::Bytes::from_static(&[3, 4, 5]));
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})
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}
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#[test]
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fn magic_byte_string() {
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v8_do(|| {
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// Init isolate
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let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
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let handle_scope = &mut v8::HandleScope::new(isolate);
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let context = v8::Context::new(handle_scope);
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let scope = &mut v8::ContextScope::new(handle_scope, context);
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let global = context.global(scope);
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// JS string to ByteString
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let v8_string = js_exec(scope, "'test \\0\\t\\n\\r\\x7F\\x80áþÆñ'");
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let rust_reflex: serde_v8::ByteString =
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serde_v8::from_v8(scope, v8_string).unwrap();
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assert_eq!(
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rust_reflex.as_slice(),
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b"test \0\t\n\r\x7F\x80\xE1\xFE\xC6\xF1"
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);
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// Non-Latin-1 characters
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let v8_string = js_exec(scope, "'日本語'");
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let rust_reflex: Result<serde_v8::ByteString> =
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serde_v8::from_v8(scope, v8_string);
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assert!(rust_reflex.is_err());
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// Windows-1252 characters that aren't Latin-1
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let v8_string = js_exec(scope, "'œ'");
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let rust_reflex: Result<serde_v8::ByteString> =
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serde_v8::from_v8(scope, v8_string);
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assert!(rust_reflex.is_err());
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// ByteString to JS string
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let expected = "a\x00sf:~\x7Fá\u{009C}þ\u{008A}";
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let buf: Vec<u8> = b"a\x00sf:~\x7F\xE1\x9C\xFE\x8A".as_ref().into();
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let zbuf = serde_v8::ByteString::from(buf);
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let v8_value = serde_v8::to_v8(scope, zbuf).unwrap();
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let key = serde_v8::to_v8(scope, "actual").unwrap();
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global.set(scope, key, v8_value);
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let v8_value_expected = serde_v8::to_v8(scope, expected).unwrap();
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let key_expected = serde_v8::to_v8(scope, "expected").unwrap();
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global.set(scope, key_expected, v8_value_expected);
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let eq = js_exec(scope, "actual === expected");
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assert!(eq.is_true());
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})
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}
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