mirror of https://github.com/tc39/test262.git
44 lines
1.5 KiB
JavaScript
44 lines
1.5 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, accessor side effects numbers 2
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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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class C {
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a() { return 'A'; }
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[key1]() { return 'B'; }
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c() { return 'C'; }
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[key2]() { return '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(new C().a(), 'A', "`new C().a()` returns `'A'`. Defined as `a() { return 'A'; }`");
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assert.sameValue(new C()[1](), 'B', "`new C()[1]()` returns `'B'`. Defined as `[key1]() { return 'B'; }`");
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assert.sameValue(new C().c(), 'C', "`new C().c()` returns `'C'`. Defined as `c() { return 'C'; }`");
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assert.sameValue(new C()[2](), 'D', "`new C()[2]()` returns `'D'`. Defined as `[key2]() { return 'D'; }`");
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assert(
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compareArray(Object.keys(C.prototype), []),
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"`compareArray(Object.keys(C.prototype), [])` returns `true`"
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);
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assert(
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compareArray(Object.getOwnPropertyNames(C.prototype), ['1', '2', 'constructor', 'a', 'c']),
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"`compareArray(Object.getOwnPropertyNames(C.prototype), ['1', '2', 'constructor', 'a', 'c'])` returns `true`"
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);
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