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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 import "package:expect/expect.dart"; |
| 6 |
| 5 class AlwaysTrue { | 7 class AlwaysTrue { |
| 6 operator ==(a) => true; | 8 operator ==(a) => true; |
| 7 } | 9 } |
| 8 | 10 |
| 9 class AlwaysFalse { | 11 class AlwaysFalse { |
| 10 operator ==(b) => false; | 12 operator ==(b) => false; |
| 11 } | 13 } |
| 12 | 14 |
| 13 main() { | 15 main() { |
| 14 var a = new AlwaysTrue(); | 16 var a = new AlwaysTrue(); |
| 15 Expect.isTrue(a == 2); | 17 Expect.isTrue(a == 2); |
| 16 Expect.isFalse(a == null); | 18 Expect.isFalse(a == null); |
| 17 Expect.isFalse(a != 2); | 19 Expect.isFalse(a != 2); |
| 18 Expect.isTrue(a != null); | 20 Expect.isTrue(a != null); |
| 19 | 21 |
| 20 a = new AlwaysFalse(); | 22 a = new AlwaysFalse(); |
| 21 Expect.isFalse(a == 2); | 23 Expect.isFalse(a == 2); |
| 22 Expect.isFalse(a == null); | 24 Expect.isFalse(a == null); |
| 23 Expect.isTrue(a != 2); | 25 Expect.isTrue(a != 2); |
| 24 Expect.isTrue(a != null); | 26 Expect.isTrue(a != null); |
| 25 } | 27 } |
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