mirror of https://github.com/tc39/test262.git
40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
// Copyright (C) 2014 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 12.2.5
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description: >
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to name side effects numbers
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includes: [compareArray.js]
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---*/
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var counter = 0;
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var key1 = {
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valueOf: function() {
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assert.sameValue(counter++, 0, "The result of `counter++` is `0`");
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return 1;
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},
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toString: null
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};
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var key2 = {
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valueOf: function() {
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assert.sameValue(counter++, 1, "The result of `counter++` is `1`");
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return 2;
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},
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toString: null
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};
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var object = {
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a: 'A',
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[key1]: 'B',
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c: 'C',
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[key2]: 'D',
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};
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assert.sameValue(counter, 2, "The value of `counter` is `2`");
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assert.sameValue(object.a, 'A', "The value of `object.a` is `'A'`. Defined as `a: 'A'`");
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assert.sameValue(object[1], 'B', "The value of `object[1]` is `'B'`. Defined as `[key1]: 'B'`");
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assert.sameValue(object.c, 'C', "The value of `object.c` is `'C'`. Defined as `c: 'C'`");
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assert.sameValue(object[2], 'D', "The value of `object[2]` is `'D'`. Defined as `[key2]: 'D'`");
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assert.compareArray(
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Object.getOwnPropertyNames(object),
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['1', '2', 'a', 'c']
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);
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