mirror of
https://github.com/dart-lang/sdk
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05ca544f15
Change-Id: Iaa0ca2b4f2d1b15f79ddca37834d3ed2497bc068 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149242 Commit-Queue: Joshua Litt <joshualitt@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>
43 lines
1,016 B
Dart
43 lines
1,016 B
Dart
// Copyright (c) 2018, 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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// @dart = 2.7
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// dart2jsOptions=--strong --omit-implicit-checks --lax-runtime-type-to-string
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import 'package:expect/expect.dart';
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class Class1a<T> {
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Class1a();
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bool operator ==(other) {
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if (identical(this, other)) return true;
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return other?.runtimeType == runtimeType;
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}
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}
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class Class1b<T> extends Class1a<T> {
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Class1b();
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}
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class Class1c<T> implements Class1a<T> {
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Class1c();
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}
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class Class2<T> {
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Class2();
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}
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main() {
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Class1a<int> cls1a = new Class1a<int>();
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Class1a<int> cls1b1 = new Class1b<int>();
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Class1a<int> cls1b2 = new Class1b<int>();
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Class1c<int> cls1c = new Class1c<int>();
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Class2<int> cls2 = new Class2<int>();
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Expect.isFalse(cls1a == cls1b1);
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Expect.isTrue(cls1b1 == cls1b2);
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Expect.isFalse(cls1a == cls1c);
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Expect.isFalse(cls1a == cls2);
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}
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