Lasse R.H. Nielsen
f8086c81ae
Collects files from `package:async_helper` and `tests/language` that are generally useful, so that all test-related helpers are in `package:expect`. Moves the two libraries from `package:async_helper` into `package:expect`, and the `tests/language/static_type_helper.dart` file too. Deprecates `async_minitest.dart`, to follow `minitest.dart`, expecting the Flutter use of it to have been fixed to not break on deprecation (I believe Flutter no longer breaks builds on deprecations at all). Patch 1 is the actual change. Patch 2+4+8 is changing all existing references to the files. Patch 6 ignores deprecation in files still using `async_minitest.dart`. 3+5+7+9 are updating this text to make the numbers match. Then it's just test-expectations and small tweaks from there. Change-Id: I1b665135b5fef9b9a0c3b340ffe9daf874d0174c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/373120 Reviewed-by: Nate Bosch <nbosch@google.com> Reviewed-by: Devon Carew <devoncarew@google.com> Commit-Queue: Lasse Nielsen <lrn@google.com>
59 lines
1.7 KiB
Dart
59 lines
1.7 KiB
Dart
// Copyright (c) 2024, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
import 'dart:async';
|
|
|
|
import 'package:expect/async_helper.dart';
|
|
import 'package:expect/expect.dart';
|
|
import 'package:expect/config.dart';
|
|
|
|
import 'finalizer_test.dart' show invalidObjects, produceGarbage, Foo;
|
|
|
|
main() async {
|
|
testWeakReferenceArgumentValidation();
|
|
|
|
// This test doesn't work reliably on the web yet as it's hard to trigger GC
|
|
// that will run finalizer and weak reference processing.
|
|
if (isVmConfiguration) {
|
|
asyncStart();
|
|
await testWeakReferenceWeakness();
|
|
asyncEnd();
|
|
}
|
|
}
|
|
|
|
void testWeakReferenceArgumentValidation() {
|
|
final foo = Foo();
|
|
final weakRef = WeakReference(foo);
|
|
Expect.equals(weakRef.target, foo);
|
|
|
|
for (final invalid in invalidObjects) {
|
|
Expect.throws(() => WeakReference(invalid));
|
|
}
|
|
}
|
|
|
|
Future testWeakReferenceWeakness() async {
|
|
late final WeakReference<Foo> weakReference;
|
|
{
|
|
Foo? foo = Foo();
|
|
weakReference = WeakReference<Foo>(foo);
|
|
Expect.equals(weakReference.target, foo);
|
|
foo = null;
|
|
}
|
|
asyncStart();
|
|
// According to the WeakReference specification:
|
|
//
|
|
// There are no guarantees that a weak reference will ever be cleared
|
|
// even if all references to its target are weak references.
|
|
//
|
|
// Wait a few iterations and give up if target is not cleared.
|
|
const int numIterations = 10;
|
|
int i = 0;
|
|
for (; weakReference.target != null && i < numIterations; ++i) {
|
|
produceGarbage();
|
|
await Future.delayed(const Duration(milliseconds: 10));
|
|
}
|
|
Expect.isTrue(i == numIterations || weakReference.target == null);
|
|
asyncEnd();
|
|
}
|