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20 lines
752 B
20 lines
752 B
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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(function testNonConfigurableProperty() {
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function ownKeys(x) { return ["23", "length"]; }
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var target = [];
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var proxy = new Proxy(target, {ownKeys:ownKeys});
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Object.defineProperty(target, "23", {value:true});
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assertEquals(["23", "length"], Object.getOwnPropertyNames(proxy));
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})();
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(function testPreventedExtension() {
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function ownKeys(x) { return ["42", "length"]; }
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var target = [];
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var proxy = new Proxy(target, {ownKeys:ownKeys});
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target[42] = true;
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Object.preventExtensions(target);
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assertEquals(["42", "length"], Object.getOwnPropertyNames(proxy));
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})();
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