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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | |
| 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. | |
| 4 // Test efficient and correct implementation of !identical(a, b). | |
| 5 // VMOptions=--optimization-counter-threshold=10 | |
| 6 | |
| 7 import 'package:expect/expect.dart'; | |
| 8 | |
| 9 notIdenticalTest1(a) { | |
| 10 if (!identical("ho", a)) { | |
| 11 return 2; | |
| 12 } else { | |
| 13 return 1; | |
| 14 } | |
| 15 } | |
| 16 | |
| 17 notIdenticalTest2(a) { | |
| 18 var x = identical("ho", a); | |
| 19 if (!x) { | |
| 20 Expect.equals(false, x); | |
| 21 return x; | |
| 22 } else { | |
| 23 Expect.equals(true, x); | |
| 24 return 1; | |
| 25 } | |
| 26 } | |
| 27 | |
| 28 notIdenticalTest3(a) { | |
| 29 var x = identical("ho", a); | |
| 30 return !x; | |
| 31 } | |
| 32 | |
| 33 main() { | |
| 34 for (int i = 0; i < 20; i++) { | |
| 35 Expect.equals(1, notIdenticalTest1("ho")); | |
| 36 Expect.equals(1, notIdenticalTest2("ho")); | |
| 37 Expect.equals(false, notIdenticalTest3("ho")); | |
| 38 } | |
| 39 } | |
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