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denoland-deno/core/modules/tests.rs
Matt Mastracci ec8e9d4f5b
chore(core): Refactor runtime and split out tests (#19491)
This is a quick first refactoring to split the tests out of runtime and
move runtime-related code to a top-level runtime module.

There will be a followup to refactor imports a bit, but this is the
major change that will most likely conflict with other work and I want
to merge it early.
2023-06-14 02:03:10 +00:00

1252 lines
33 KiB
Rust

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use crate::ascii_str;
use crate::resolve_import;
use crate::runtime::JsRuntime;
use crate::runtime::JsRuntimeForSnapshot;
use crate::RuntimeOptions;
use crate::Snapshot;
use deno_ops::op;
use futures::future::poll_fn;
use futures::future::FutureExt;
use parking_lot::Mutex;
use std::fmt;
use std::future::Future;
use std::io;
use std::path::PathBuf;
use std::sync::atomic::AtomicUsize;
use std::sync::atomic::Ordering;
use std::sync::Arc;
use super::*;
// deno_ops macros generate code assuming deno_core in scope.
mod deno_core {
pub use crate::*;
}
#[derive(Default)]
struct MockLoader {
pub loads: Arc<Mutex<Vec<String>>>,
}
impl MockLoader {
fn new() -> Rc<Self> {
Default::default()
}
}
fn mock_source_code(url: &str) -> Option<(&'static str, &'static str)> {
const A_SRC: &str = r#"
import { b } from "/b.js";
import { c } from "/c.js";
if (b() != 'b') throw Error();
if (c() != 'c') throw Error();
if (!import.meta.main) throw Error();
if (import.meta.url != 'file:///a.js') throw Error();
"#;
const B_SRC: &str = r#"
import { c } from "/c.js";
if (c() != 'c') throw Error();
export function b() { return 'b'; }
if (import.meta.main) throw Error();
if (import.meta.url != 'file:///b.js') throw Error();
"#;
const C_SRC: &str = r#"
import { d } from "/d.js";
export function c() { return 'c'; }
if (d() != 'd') throw Error();
if (import.meta.main) throw Error();
if (import.meta.url != 'file:///c.js') throw Error();
"#;
const D_SRC: &str = r#"
export function d() { return 'd'; }
if (import.meta.main) throw Error();
if (import.meta.url != 'file:///d.js') throw Error();
"#;
const CIRCULAR1_SRC: &str = r#"
import "/circular2.js";
Deno.core.print("circular1");
"#;
const CIRCULAR2_SRC: &str = r#"
import "/circular3.js";
Deno.core.print("circular2");
"#;
const CIRCULAR3_SRC: &str = r#"
import "/circular1.js";
import "/circular2.js";
Deno.core.print("circular3");
"#;
const REDIRECT1_SRC: &str = r#"
import "./redirect2.js";
Deno.core.print("redirect1");
"#;
const REDIRECT2_SRC: &str = r#"
import "./redirect3.js";
Deno.core.print("redirect2");
"#;
const REDIRECT3_SRC: &str = r#"Deno.core.print("redirect3");"#;
const MAIN_SRC: &str = r#"
// never_ready.js never loads.
import "/never_ready.js";
// slow.js resolves after one tick.
import "/slow.js";
"#;
const SLOW_SRC: &str = r#"
// Circular import of never_ready.js
// Does this trigger two ModuleLoader calls? It shouldn't.
import "/never_ready.js";
import "/a.js";
"#;
const BAD_IMPORT_SRC: &str = r#"import "foo";"#;
// (code, real_module_name)
let spec: Vec<&str> = url.split("file://").collect();
match spec[1] {
"/a.js" => Some((A_SRC, "file:///a.js")),
"/b.js" => Some((B_SRC, "file:///b.js")),
"/c.js" => Some((C_SRC, "file:///c.js")),
"/d.js" => Some((D_SRC, "file:///d.js")),
"/circular1.js" => Some((CIRCULAR1_SRC, "file:///circular1.js")),
"/circular2.js" => Some((CIRCULAR2_SRC, "file:///circular2.js")),
"/circular3.js" => Some((CIRCULAR3_SRC, "file:///circular3.js")),
"/redirect1.js" => Some((REDIRECT1_SRC, "file:///redirect1.js")),
// pretend redirect - real module name is different than one requested
"/redirect2.js" => Some((REDIRECT2_SRC, "file:///dir/redirect2.js")),
"/dir/redirect3.js" => Some((REDIRECT3_SRC, "file:///redirect3.js")),
"/slow.js" => Some((SLOW_SRC, "file:///slow.js")),
"/never_ready.js" => {
Some(("should never be Ready", "file:///never_ready.js"))
}
"/main.js" => Some((MAIN_SRC, "file:///main.js")),
"/bad_import.js" => Some((BAD_IMPORT_SRC, "file:///bad_import.js")),
// deliberately empty code.
"/main_with_code.js" => Some(("", "file:///main_with_code.js")),
_ => None,
}
}
#[derive(Debug, PartialEq)]
enum MockError {
ResolveErr,
LoadErr,
}
impl fmt::Display for MockError {
fn fmt(&self, _f: &mut fmt::Formatter) -> fmt::Result {
unimplemented!()
}
}
impl std::error::Error for MockError {
fn cause(&self) -> Option<&dyn std::error::Error> {
unimplemented!()
}
}
struct DelayedSourceCodeFuture {
url: String,
counter: u32,
}
impl Future for DelayedSourceCodeFuture {
type Output = Result<ModuleSource, Error>;
fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
let inner = self.get_mut();
inner.counter += 1;
if inner.url == "file:///never_ready.js" {
return Poll::Pending;
}
if inner.url == "file:///slow.js" && inner.counter < 2 {
// TODO(ry) Hopefully in the future we can remove current task
// notification.
cx.waker().wake_by_ref();
return Poll::Pending;
}
match mock_source_code(&inner.url) {
Some(src) => Poll::Ready(Ok(ModuleSource::for_test_with_redirect(
src.0,
inner.url.as_str(),
src.1,
))),
None => Poll::Ready(Err(MockError::LoadErr.into())),
}
}
}
impl ModuleLoader for MockLoader {
fn resolve(
&self,
specifier: &str,
referrer: &str,
_kind: ResolutionKind,
) -> Result<ModuleSpecifier, Error> {
let referrer = if referrer == "." {
"file:///"
} else {
referrer
};
let output_specifier = match resolve_import(specifier, referrer) {
Ok(specifier) => specifier,
Err(..) => return Err(MockError::ResolveErr.into()),
};
if mock_source_code(output_specifier.as_ref()).is_some() {
Ok(output_specifier)
} else {
Err(MockError::ResolveErr.into())
}
}
fn load(
&self,
module_specifier: &ModuleSpecifier,
_maybe_referrer: Option<&ModuleSpecifier>,
_is_dyn_import: bool,
) -> Pin<Box<ModuleSourceFuture>> {
let mut loads = self.loads.lock();
loads.push(module_specifier.to_string());
let url = module_specifier.to_string();
DelayedSourceCodeFuture { url, counter: 0 }.boxed()
}
}
#[test]
fn test_recursive_load() {
let loader = MockLoader::new();
let loads = loader.loads.clone();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
let spec = resolve_url("file:///a.js").unwrap();
let a_id_fut = runtime.load_main_module(&spec, None);
let a_id = futures::executor::block_on(a_id_fut).unwrap();
#[allow(clippy::let_underscore_future)]
let _ = runtime.mod_evaluate(a_id);
futures::executor::block_on(runtime.run_event_loop(false)).unwrap();
let l = loads.lock();
assert_eq!(
l.to_vec(),
vec![
"file:///a.js",
"file:///b.js",
"file:///c.js",
"file:///d.js"
]
);
let module_map_rc = runtime.module_map();
let modules = module_map_rc.borrow();
assert_eq!(
modules.get_id("file:///a.js", AssertedModuleType::JavaScriptOrWasm),
Some(a_id)
);
let b_id = modules
.get_id("file:///b.js", AssertedModuleType::JavaScriptOrWasm)
.unwrap();
let c_id = modules
.get_id("file:///c.js", AssertedModuleType::JavaScriptOrWasm)
.unwrap();
let d_id = modules
.get_id("file:///d.js", AssertedModuleType::JavaScriptOrWasm)
.unwrap();
assert_eq!(
modules.get_requested_modules(a_id),
Some(&vec![
ModuleRequest {
specifier: "file:///b.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
},
ModuleRequest {
specifier: "file:///c.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
},
])
);
assert_eq!(
modules.get_requested_modules(b_id),
Some(&vec![ModuleRequest {
specifier: "file:///c.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
},])
);
assert_eq!(
modules.get_requested_modules(c_id),
Some(&vec![ModuleRequest {
specifier: "file:///d.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
},])
);
assert_eq!(modules.get_requested_modules(d_id), Some(&vec![]));
}
#[test]
fn test_mods() {
#[derive(Default)]
struct ModsLoader {
pub count: Arc<AtomicUsize>,
}
impl ModuleLoader for ModsLoader {
fn resolve(
&self,
specifier: &str,
referrer: &str,
_kind: ResolutionKind,
) -> Result<ModuleSpecifier, Error> {
self.count.fetch_add(1, Ordering::Relaxed);
assert_eq!(specifier, "./b.js");
assert_eq!(referrer, "file:///a.js");
let s = resolve_import(specifier, referrer).unwrap();
Ok(s)
}
fn load(
&self,
_module_specifier: &ModuleSpecifier,
_maybe_referrer: Option<&ModuleSpecifier>,
_is_dyn_import: bool,
) -> Pin<Box<ModuleSourceFuture>> {
unreachable!()
}
}
let loader = Rc::new(ModsLoader::default());
let resolve_count = loader.count.clone();
static DISPATCH_COUNT: AtomicUsize = AtomicUsize::new(0);
#[op]
fn op_test(control: u8) -> u8 {
DISPATCH_COUNT.fetch_add(1, Ordering::Relaxed);
assert_eq!(control, 42);
43
}
deno_core::extension!(test_ext, ops = [op_test]);
let mut runtime = JsRuntime::new(RuntimeOptions {
extensions: vec![test_ext::init_ops()],
module_loader: Some(loader),
..Default::default()
});
runtime
.execute_script_static(
"setup.js",
r#"
function assert(cond) {
if (!cond) {
throw Error("assert");
}
}
"#,
)
.unwrap();
assert_eq!(DISPATCH_COUNT.load(Ordering::Relaxed), 0);
let module_map_rc = runtime.module_map().clone();
let (mod_a, mod_b) = {
let scope = &mut runtime.handle_scope();
let mut module_map = module_map_rc.borrow_mut();
let specifier_a = ascii_str!("file:///a.js");
let mod_a = module_map
.new_es_module(
scope,
true,
specifier_a,
ascii_str!(
r#"
import { b } from './b.js'
if (b() != 'b') throw Error();
let control = 42;
Deno.core.ops.op_test(control);
"#
),
false,
)
.unwrap();
assert_eq!(DISPATCH_COUNT.load(Ordering::Relaxed), 0);
let imports = module_map.get_requested_modules(mod_a);
assert_eq!(
imports,
Some(&vec![ModuleRequest {
specifier: "file:///b.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
},])
);
let mod_b = module_map
.new_es_module(
scope,
false,
ascii_str!("file:///b.js"),
ascii_str!("export function b() { return 'b' }"),
false,
)
.unwrap();
let imports = module_map.get_requested_modules(mod_b).unwrap();
assert_eq!(imports.len(), 0);
(mod_a, mod_b)
};
runtime.instantiate_module(mod_b).unwrap();
assert_eq!(DISPATCH_COUNT.load(Ordering::Relaxed), 0);
assert_eq!(resolve_count.load(Ordering::SeqCst), 1);
runtime.instantiate_module(mod_a).unwrap();
assert_eq!(DISPATCH_COUNT.load(Ordering::Relaxed), 0);
#[allow(clippy::let_underscore_future)]
let _ = runtime.mod_evaluate(mod_a);
assert_eq!(DISPATCH_COUNT.load(Ordering::Relaxed), 1);
}
#[test]
fn test_json_module() {
#[derive(Default)]
struct ModsLoader {
pub count: Arc<AtomicUsize>,
}
impl ModuleLoader for ModsLoader {
fn resolve(
&self,
specifier: &str,
referrer: &str,
_kind: ResolutionKind,
) -> Result<ModuleSpecifier, Error> {
self.count.fetch_add(1, Ordering::Relaxed);
assert_eq!(specifier, "./b.json");
assert_eq!(referrer, "file:///a.js");
let s = resolve_import(specifier, referrer).unwrap();
Ok(s)
}
fn load(
&self,
_module_specifier: &ModuleSpecifier,
_maybe_referrer: Option<&ModuleSpecifier>,
_is_dyn_import: bool,
) -> Pin<Box<ModuleSourceFuture>> {
unreachable!()
}
}
let loader = Rc::new(ModsLoader::default());
let resolve_count = loader.count.clone();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
runtime
.execute_script_static(
"setup.js",
r#"
function assert(cond) {
if (!cond) {
throw Error("assert");
}
}
"#,
)
.unwrap();
let module_map_rc = runtime.module_map().clone();
let (mod_a, mod_b) = {
let scope = &mut runtime.handle_scope();
let mut module_map = module_map_rc.borrow_mut();
let specifier_a = ascii_str!("file:///a.js");
let mod_a = module_map
.new_es_module(
scope,
true,
specifier_a,
ascii_str!(
r#"
import jsonData from './b.json' assert {type: "json"};
assert(jsonData.a == "b");
assert(jsonData.c.d == 10);
"#
),
false,
)
.unwrap();
let imports = module_map.get_requested_modules(mod_a);
assert_eq!(
imports,
Some(&vec![ModuleRequest {
specifier: "file:///b.json".to_string(),
asserted_module_type: AssertedModuleType::Json,
},])
);
let mod_b = module_map
.new_json_module(
scope,
ascii_str!("file:///b.json"),
ascii_str!("{\"a\": \"b\", \"c\": {\"d\": 10}}"),
)
.unwrap();
let imports = module_map.get_requested_modules(mod_b).unwrap();
assert_eq!(imports.len(), 0);
(mod_a, mod_b)
};
runtime.instantiate_module(mod_b).unwrap();
assert_eq!(resolve_count.load(Ordering::SeqCst), 1);
runtime.instantiate_module(mod_a).unwrap();
let receiver = runtime.mod_evaluate(mod_a);
futures::executor::block_on(runtime.run_event_loop(false)).unwrap();
futures::executor::block_on(receiver).unwrap().unwrap();
}
#[tokio::test]
async fn dyn_import_err() {
#[derive(Clone, Default)]
struct DynImportErrLoader {
pub count: Arc<AtomicUsize>,
}
impl ModuleLoader for DynImportErrLoader {
fn resolve(
&self,
specifier: &str,
referrer: &str,
_kind: ResolutionKind,
) -> Result<ModuleSpecifier, Error> {
self.count.fetch_add(1, Ordering::Relaxed);
assert_eq!(specifier, "/foo.js");
assert_eq!(referrer, "file:///dyn_import2.js");
let s = resolve_import(specifier, referrer).unwrap();
Ok(s)
}
fn load(
&self,
_module_specifier: &ModuleSpecifier,
_maybe_referrer: Option<&ModuleSpecifier>,
_is_dyn_import: bool,
) -> Pin<Box<ModuleSourceFuture>> {
async { Err(io::Error::from(io::ErrorKind::NotFound).into()) }.boxed()
}
}
let loader = Rc::new(DynImportErrLoader::default());
let count = loader.count.clone();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
// Test an erroneous dynamic import where the specified module isn't found.
poll_fn(move |cx| {
runtime
.execute_script_static(
"file:///dyn_import2.js",
r#"
(async () => {
await import("/foo.js");
})();
"#,
)
.unwrap();
// We should get an error here.
let result = runtime.poll_event_loop(cx, false);
if let Poll::Ready(Ok(_)) = result {
unreachable!();
}
assert_eq!(count.load(Ordering::Relaxed), 4);
Poll::Ready(())
})
.await;
}
#[derive(Clone, Default)]
struct DynImportOkLoader {
pub prepare_load_count: Arc<AtomicUsize>,
pub resolve_count: Arc<AtomicUsize>,
pub load_count: Arc<AtomicUsize>,
}
impl ModuleLoader for DynImportOkLoader {
fn resolve(
&self,
specifier: &str,
referrer: &str,
_kind: ResolutionKind,
) -> Result<ModuleSpecifier, Error> {
let c = self.resolve_count.fetch_add(1, Ordering::Relaxed);
assert!(c < 7);
assert_eq!(specifier, "./b.js");
assert_eq!(referrer, "file:///dyn_import3.js");
let s = resolve_import(specifier, referrer).unwrap();
Ok(s)
}
fn load(
&self,
specifier: &ModuleSpecifier,
_maybe_referrer: Option<&ModuleSpecifier>,
_is_dyn_import: bool,
) -> Pin<Box<ModuleSourceFuture>> {
self.load_count.fetch_add(1, Ordering::Relaxed);
let info =
ModuleSource::for_test("export function b() { return 'b' }", specifier);
async move { Ok(info) }.boxed()
}
fn prepare_load(
&self,
_module_specifier: &ModuleSpecifier,
_maybe_referrer: Option<String>,
_is_dyn_import: bool,
) -> Pin<Box<dyn Future<Output = Result<(), Error>>>> {
self.prepare_load_count.fetch_add(1, Ordering::Relaxed);
async { Ok(()) }.boxed_local()
}
}
#[tokio::test]
async fn dyn_import_ok() {
let loader = Rc::new(DynImportOkLoader::default());
let prepare_load_count = loader.prepare_load_count.clone();
let resolve_count = loader.resolve_count.clone();
let load_count = loader.load_count.clone();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
poll_fn(move |cx| {
// Dynamically import mod_b
runtime
.execute_script_static(
"file:///dyn_import3.js",
r#"
(async () => {
let mod = await import("./b.js");
if (mod.b() !== 'b') {
throw Error("bad1");
}
// And again!
mod = await import("./b.js");
if (mod.b() !== 'b') {
throw Error("bad2");
}
})();
"#,
)
.unwrap();
assert!(matches!(
runtime.poll_event_loop(cx, false),
Poll::Ready(Ok(_))
));
assert_eq!(prepare_load_count.load(Ordering::Relaxed), 1);
assert_eq!(resolve_count.load(Ordering::Relaxed), 7);
assert_eq!(load_count.load(Ordering::Relaxed), 1);
assert!(matches!(
runtime.poll_event_loop(cx, false),
Poll::Ready(Ok(_))
));
assert_eq!(resolve_count.load(Ordering::Relaxed), 7);
assert_eq!(load_count.load(Ordering::Relaxed), 1);
Poll::Ready(())
})
.await;
}
#[tokio::test]
async fn dyn_import_borrow_mut_error() {
// https://github.com/denoland/deno/issues/6054
let loader = Rc::new(DynImportOkLoader::default());
let prepare_load_count = loader.prepare_load_count.clone();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
poll_fn(move |cx| {
runtime
.execute_script_static(
"file:///dyn_import3.js",
r#"
(async () => {
let mod = await import("./b.js");
if (mod.b() !== 'b') {
throw Error("bad");
}
})();
"#,
)
.unwrap();
// First poll runs `prepare_load` hook.
let _ = runtime.poll_event_loop(cx, false);
assert_eq!(prepare_load_count.load(Ordering::Relaxed), 1);
// Second poll triggers error
let _ = runtime.poll_event_loop(cx, false);
Poll::Ready(())
})
.await;
}
// Regression test for https://github.com/denoland/deno/issues/3736.
#[test]
fn dyn_concurrent_circular_import() {
#[derive(Clone, Default)]
struct DynImportCircularLoader {
pub resolve_count: Arc<AtomicUsize>,
pub load_count: Arc<AtomicUsize>,
}
impl ModuleLoader for DynImportCircularLoader {
fn resolve(
&self,
specifier: &str,
referrer: &str,
_kind: ResolutionKind,
) -> Result<ModuleSpecifier, Error> {
self.resolve_count.fetch_add(1, Ordering::Relaxed);
let s = resolve_import(specifier, referrer).unwrap();
Ok(s)
}
fn load(
&self,
specifier: &ModuleSpecifier,
_maybe_referrer: Option<&ModuleSpecifier>,
_is_dyn_import: bool,
) -> Pin<Box<ModuleSourceFuture>> {
self.load_count.fetch_add(1, Ordering::Relaxed);
let filename = PathBuf::from(specifier.to_string())
.file_name()
.unwrap()
.to_string_lossy()
.to_string();
let code = match filename.as_str() {
"a.js" => "import './b.js';",
"b.js" => "import './c.js';\nimport './a.js';",
"c.js" => "import './d.js';",
"d.js" => "// pass",
_ => unreachable!(),
};
let info = ModuleSource::for_test(code, specifier);
async move { Ok(info) }.boxed()
}
}
let loader = Rc::new(DynImportCircularLoader::default());
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
runtime
.execute_script_static(
"file:///entry.js",
"import('./b.js');\nimport('./a.js');",
)
.unwrap();
let result = futures::executor::block_on(runtime.run_event_loop(false));
assert!(result.is_ok());
}
#[test]
fn test_circular_load() {
let loader = MockLoader::new();
let loads = loader.loads.clone();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
let fut = async move {
let spec = resolve_url("file:///circular1.js").unwrap();
let result = runtime.load_main_module(&spec, None).await;
assert!(result.is_ok());
let circular1_id = result.unwrap();
#[allow(clippy::let_underscore_future)]
let _ = runtime.mod_evaluate(circular1_id);
runtime.run_event_loop(false).await.unwrap();
let l = loads.lock();
assert_eq!(
l.to_vec(),
vec![
"file:///circular1.js",
"file:///circular2.js",
"file:///circular3.js"
]
);
let module_map_rc = runtime.module_map();
let modules = module_map_rc.borrow();
assert_eq!(
modules
.get_id("file:///circular1.js", AssertedModuleType::JavaScriptOrWasm),
Some(circular1_id)
);
let circular2_id = modules
.get_id("file:///circular2.js", AssertedModuleType::JavaScriptOrWasm)
.unwrap();
assert_eq!(
modules.get_requested_modules(circular1_id),
Some(&vec![ModuleRequest {
specifier: "file:///circular2.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
}])
);
assert_eq!(
modules.get_requested_modules(circular2_id),
Some(&vec![ModuleRequest {
specifier: "file:///circular3.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
}])
);
assert!(modules
.get_id("file:///circular3.js", AssertedModuleType::JavaScriptOrWasm)
.is_some());
let circular3_id = modules
.get_id("file:///circular3.js", AssertedModuleType::JavaScriptOrWasm)
.unwrap();
assert_eq!(
modules.get_requested_modules(circular3_id),
Some(&vec![
ModuleRequest {
specifier: "file:///circular1.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
},
ModuleRequest {
specifier: "file:///circular2.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
}
])
);
}
.boxed_local();
futures::executor::block_on(fut);
}
#[test]
fn test_redirect_load() {
let loader = MockLoader::new();
let loads = loader.loads.clone();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
let fut = async move {
let spec = resolve_url("file:///redirect1.js").unwrap();
let result = runtime.load_main_module(&spec, None).await;
assert!(result.is_ok());
let redirect1_id = result.unwrap();
#[allow(clippy::let_underscore_future)]
let _ = runtime.mod_evaluate(redirect1_id);
runtime.run_event_loop(false).await.unwrap();
let l = loads.lock();
assert_eq!(
l.to_vec(),
vec![
"file:///redirect1.js",
"file:///redirect2.js",
"file:///dir/redirect3.js"
]
);
let module_map_rc = runtime.module_map();
let modules = module_map_rc.borrow();
assert_eq!(
modules
.get_id("file:///redirect1.js", AssertedModuleType::JavaScriptOrWasm),
Some(redirect1_id)
);
let redirect2_id = modules
.get_id(
"file:///dir/redirect2.js",
AssertedModuleType::JavaScriptOrWasm,
)
.unwrap();
assert!(modules
.is_alias("file:///redirect2.js", AssertedModuleType::JavaScriptOrWasm));
assert!(!modules.is_alias(
"file:///dir/redirect2.js",
AssertedModuleType::JavaScriptOrWasm
));
assert_eq!(
modules
.get_id("file:///redirect2.js", AssertedModuleType::JavaScriptOrWasm),
Some(redirect2_id)
);
let redirect3_id = modules
.get_id("file:///redirect3.js", AssertedModuleType::JavaScriptOrWasm)
.unwrap();
assert!(modules.is_alias(
"file:///dir/redirect3.js",
AssertedModuleType::JavaScriptOrWasm
));
assert!(!modules
.is_alias("file:///redirect3.js", AssertedModuleType::JavaScriptOrWasm));
assert_eq!(
modules.get_id(
"file:///dir/redirect3.js",
AssertedModuleType::JavaScriptOrWasm
),
Some(redirect3_id)
);
}
.boxed_local();
futures::executor::block_on(fut);
}
#[tokio::test]
async fn slow_never_ready_modules() {
let loader = MockLoader::new();
let loads = loader.loads.clone();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
poll_fn(move |cx| {
let spec = resolve_url("file:///main.js").unwrap();
let mut recursive_load =
runtime.load_main_module(&spec, None).boxed_local();
let result = recursive_load.poll_unpin(cx);
assert!(result.is_pending());
// TODO(ry) Arguably the first time we poll only the following modules
// should be loaded:
// "file:///main.js",
// "file:///never_ready.js",
// "file:///slow.js"
// But due to current task notification in DelayedSourceCodeFuture they
// all get loaded in a single poll.
for _ in 0..10 {
let result = recursive_load.poll_unpin(cx);
assert!(result.is_pending());
let l = loads.lock();
assert_eq!(
l.to_vec(),
vec![
"file:///main.js",
"file:///never_ready.js",
"file:///slow.js",
"file:///a.js",
"file:///b.js",
"file:///c.js",
"file:///d.js"
]
);
}
Poll::Ready(())
})
.await;
}
#[tokio::test]
async fn loader_disappears_after_error() {
let loader = MockLoader::new();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
let spec = resolve_url("file:///bad_import.js").unwrap();
let result = runtime.load_main_module(&spec, None).await;
let err = result.unwrap_err();
assert_eq!(
err.downcast_ref::<MockError>().unwrap(),
&MockError::ResolveErr
);
}
#[test]
fn recursive_load_main_with_code() {
const MAIN_WITH_CODE_SRC: FastString = ascii_str!(
r#"
import { b } from "/b.js";
import { c } from "/c.js";
if (b() != 'b') throw Error();
if (c() != 'c') throw Error();
if (!import.meta.main) throw Error();
if (import.meta.url != 'file:///main_with_code.js') throw Error();
"#
);
let loader = MockLoader::new();
let loads = loader.loads.clone();
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
// In default resolution code should be empty.
// Instead we explicitly pass in our own code.
// The behavior should be very similar to /a.js.
let spec = resolve_url("file:///main_with_code.js").unwrap();
let main_id_fut = runtime
.load_main_module(&spec, Some(MAIN_WITH_CODE_SRC))
.boxed_local();
let main_id = futures::executor::block_on(main_id_fut).unwrap();
#[allow(clippy::let_underscore_future)]
let _ = runtime.mod_evaluate(main_id);
futures::executor::block_on(runtime.run_event_loop(false)).unwrap();
let l = loads.lock();
assert_eq!(
l.to_vec(),
vec!["file:///b.js", "file:///c.js", "file:///d.js"]
);
let module_map_rc = runtime.module_map();
let modules = module_map_rc.borrow();
assert_eq!(
modules.get_id(
"file:///main_with_code.js",
AssertedModuleType::JavaScriptOrWasm
),
Some(main_id)
);
let b_id = modules
.get_id("file:///b.js", AssertedModuleType::JavaScriptOrWasm)
.unwrap();
let c_id = modules
.get_id("file:///c.js", AssertedModuleType::JavaScriptOrWasm)
.unwrap();
let d_id = modules
.get_id("file:///d.js", AssertedModuleType::JavaScriptOrWasm)
.unwrap();
assert_eq!(
modules.get_requested_modules(main_id),
Some(&vec![
ModuleRequest {
specifier: "file:///b.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
},
ModuleRequest {
specifier: "file:///c.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
}
])
);
assert_eq!(
modules.get_requested_modules(b_id),
Some(&vec![ModuleRequest {
specifier: "file:///c.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
}])
);
assert_eq!(
modules.get_requested_modules(c_id),
Some(&vec![ModuleRequest {
specifier: "file:///d.js".to_string(),
asserted_module_type: AssertedModuleType::JavaScriptOrWasm,
}])
);
assert_eq!(modules.get_requested_modules(d_id), Some(&vec![]));
}
#[test]
fn main_and_side_module() {
struct ModsLoader {}
let main_specifier = resolve_url("file:///main_module.js").unwrap();
let side_specifier = resolve_url("file:///side_module.js").unwrap();
impl ModuleLoader for ModsLoader {
fn resolve(
&self,
specifier: &str,
referrer: &str,
_kind: ResolutionKind,
) -> Result<ModuleSpecifier, Error> {
let s = resolve_import(specifier, referrer).unwrap();
Ok(s)
}
fn load(
&self,
module_specifier: &ModuleSpecifier,
_maybe_referrer: Option<&ModuleSpecifier>,
_is_dyn_import: bool,
) -> Pin<Box<ModuleSourceFuture>> {
let module_source = match module_specifier.as_str() {
"file:///main_module.js" => ModuleSource::for_test(
"if (!import.meta.main) throw Error();",
"file:///main_module.js",
),
"file:///side_module.js" => ModuleSource::for_test(
"if (import.meta.main) throw Error();",
"file:///side_module.js",
),
_ => unreachable!(),
};
async move { Ok(module_source) }.boxed()
}
}
let loader = Rc::new(ModsLoader {});
let mut runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(loader),
..Default::default()
});
let main_id_fut = runtime
.load_main_module(&main_specifier, None)
.boxed_local();
let main_id = futures::executor::block_on(main_id_fut).unwrap();
#[allow(clippy::let_underscore_future)]
let _ = runtime.mod_evaluate(main_id);
futures::executor::block_on(runtime.run_event_loop(false)).unwrap();
// Try to add another main module - it should error.
let side_id_fut = runtime
.load_main_module(&side_specifier, None)
.boxed_local();
futures::executor::block_on(side_id_fut).unwrap_err();
// And now try to load it as a side module
let side_id_fut = runtime
.load_side_module(&side_specifier, None)
.boxed_local();
let side_id = futures::executor::block_on(side_id_fut).unwrap();
#[allow(clippy::let_underscore_future)]
let _ = runtime.mod_evaluate(side_id);
futures::executor::block_on(runtime.run_event_loop(false)).unwrap();
}
#[test]
fn dynamic_imports_snapshot() {
//TODO: Once the issue with the ModuleNamespaceEntryGetter is fixed, we can maintain a reference to the module
// and use it when loading the snapshot
let snapshot = {
const MAIN_WITH_CODE_SRC: FastString = ascii_str!(
r#"
await import("./b.js");
"#
);
let loader = MockLoader::new();
let mut runtime = JsRuntimeForSnapshot::new(
RuntimeOptions {
module_loader: Some(loader),
..Default::default()
},
Default::default(),
);
// In default resolution code should be empty.
// Instead we explicitly pass in our own code.
// The behavior should be very similar to /a.js.
let spec = resolve_url("file:///main_with_code.js").unwrap();
let main_id_fut = runtime
.load_main_module(&spec, Some(MAIN_WITH_CODE_SRC))
.boxed_local();
let main_id = futures::executor::block_on(main_id_fut).unwrap();
#[allow(clippy::let_underscore_future)]
let _ = runtime.mod_evaluate(main_id);
futures::executor::block_on(runtime.run_event_loop(false)).unwrap();
runtime.snapshot()
};
let snapshot = Snapshot::JustCreated(snapshot);
let mut runtime2 = JsRuntime::new(RuntimeOptions {
startup_snapshot: Some(snapshot),
..Default::default()
});
//Evaluate the snapshot with an empty function
runtime2.execute_script_static("check.js", "true").unwrap();
}
#[test]
fn import_meta_snapshot() {
let snapshot = {
const MAIN_WITH_CODE_SRC: ModuleCode = ascii_str!(
r#"
if (import.meta.url != 'file:///main_with_code.js') throw Error();
globalThis.meta = import.meta;
globalThis.url = import.meta.url;
"#
);
let loader = MockLoader::new();
let mut runtime = JsRuntimeForSnapshot::new(
RuntimeOptions {
module_loader: Some(loader),
..Default::default()
},
Default::default(),
);
// In default resolution code should be empty.
// Instead we explicitly pass in our own code.
// The behavior should be very similar to /a.js.
let spec = resolve_url("file:///main_with_code.js").unwrap();
let main_id_fut = runtime
.load_main_module(&spec, Some(MAIN_WITH_CODE_SRC))
.boxed_local();
let main_id = futures::executor::block_on(main_id_fut).unwrap();
#[allow(clippy::let_underscore_future)]
let _ = runtime.mod_evaluate(main_id);
futures::executor::block_on(runtime.run_event_loop(false)).unwrap();
runtime.snapshot()
};
let snapshot = Snapshot::JustCreated(snapshot);
let mut runtime2 = JsRuntime::new(RuntimeOptions {
startup_snapshot: Some(snapshot),
..Default::default()
});
runtime2
.execute_script_static(
"check.js",
"if (globalThis.url !== 'file:///main_with_code.js') throw Error('x')",
)
.unwrap();
}