Riley Porter
278a040e1d
Routes implementation to JavaScript WeakRef and FinalizerRegistry APIs using JS foreign function calls. Uses Wrapper names for the Dart library to avoid issues with DDC. Bug: #47775, #47776 Change-Id: Iad82bd83ac10c666d08a2c042a8ed6109b8b58c8 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/229180 Reviewed-by: Stephen Adams <sra@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com> Reviewed-by: Nicholas Shahan <nshahan@google.com> Commit-Queue: Riley Porter <rileyporter@google.com>
56 lines
1.7 KiB
Dart
56 lines
1.7 KiB
Dart
// Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Basic tests for the WeakReference and Finalizer API for the web backends.
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// Does not trigger garbage collection to heavily test the functionality.
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import 'package:expect/minitest.dart';
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class Foo {
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int close() {
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return 42; // no-op, dropped return value.
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}
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}
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void callback(Foo f) {
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f.close();
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}
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main() {
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test('weak reference', () {
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var list = ["foo"];
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var weakRef = WeakReference<List<String>>(list);
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expect(weakRef.target, equals(list));
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// Javascript API throws when the representation of target is not 'object'
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// in the compiled Javascript.
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expect(() => WeakReference<String>("foo"), throws);
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expect(() => WeakReference<int>(1), throws);
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});
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test('finalizer', () {
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var finalizer = Finalizer<Foo>(callback);
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var list = ["foo"];
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var foo = Foo();
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// Should not cause errors to attach or detach
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finalizer.attach(list, foo);
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finalizer.attach(list, foo, detach: list);
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finalizer.detach(list);
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// Should not cause errors to use a different detach token
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var detachList = [1, 2, 3];
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finalizer.attach(list, foo, detach: detachList);
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finalizer.detach(detachList);
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// JavaScript API returns false when unknown target detached.
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// Should not cause an error to detach unknown token.
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var unknownList = [2, 4, 6];
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finalizer.detach(unknownList);
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// JavaScript API throws when target and detach token are not objects.
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expect(() => finalizer.attach("token string value", foo), throws);
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expect(() => finalizer.detach("detach string value"), throws);
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});
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}
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