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Issue 2188753002: Make Array.prototype[Symbol.iterator] non-constructible. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 4 months ago
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1 // Copyright 2016 the V8 project authors. All rights reserved. 1 // Copyright 2016 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-array-prototype-values 5 // Flags: --harmony-array-prototype-values
6 6
7 // Functionality of the values iterator is tested elsewhere; this test 7 // Functionality of the values iterator is tested elsewhere; this test
8 // merely verifies that the 'values' property is set up correctly. 8 // merely verifies that the 'values' property is set up correctly.
9 var valuesDesc = Object.getOwnPropertyDescriptor(Array.prototype, 'values'); 9 var valuesDesc = Object.getOwnPropertyDescriptor(Array.prototype, 'values');
10 assertEquals('object', typeof valuesDesc); 10 assertEquals('object', typeof valuesDesc);
11 assertSame(Array.prototype[Symbol.iterator], valuesDesc.value); 11 assertSame(Array.prototype[Symbol.iterator], valuesDesc.value);
12 assertTrue(valuesDesc.configurable); 12 assertTrue(valuesDesc.configurable);
13 assertTrue(valuesDesc.writable); 13 assertTrue(valuesDesc.writable);
14 assertFalse(valuesDesc.enumerable); 14 assertFalse(valuesDesc.enumerable);
15 assertTrue(Array.prototype[Symbol.unscopables].values); 15 assertTrue(Array.prototype[Symbol.unscopables].values);
16 assertThrows(() => new Array.prototype[Symbol.iterator], TypeError);
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