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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 // | 4 // |
| 5 // Flags: --harmony-classes --allow-natives-syntax | 5 // Flags: --allow-natives-syntax |
| 6 'use strict'; | 6 'use strict'; |
| 7 | 7 |
| 8 (function TestMaps() { | 8 (function TestMaps() { |
| 9 class Base {} | 9 class Base {} |
| 10 class Derived extends Base {} | 10 class Derived extends Base {} |
| 11 | 11 |
| 12 let d1 = new Derived(); | 12 let d1 = new Derived(); |
| 13 let d2 = new Derived(); | 13 let d2 = new Derived(); |
| 14 | 14 |
| 15 assertTrue(%HaveSameMap(d1, d2)); | 15 assertTrue(%HaveSameMap(d1, d2)); |
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| 59 assertSame(10, d1.byteLength); | 59 assertSame(10, d1.byteLength); |
| 60 | 60 |
| 61 Derived.__proto__ = F; | 61 Derived.__proto__ = F; |
| 62 called = 0; | 62 called = 0; |
| 63 let d2 = new Derived(); | 63 let d2 = new Derived(); |
| 64 assertSame(1, called); | 64 assertSame(1, called); |
| 65 assertThrows(function() { d2.byteLength; }, TypeError); | 65 assertThrows(function() { d2.byteLength; }, TypeError); |
| 66 | 66 |
| 67 assertFalse(%HaveSameMap(d1, d2)); | 67 assertFalse(%HaveSameMap(d1, d2)); |
| 68 }()); | 68 }()); |
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