38 lines
1008 B
JavaScript
38 lines
1008 B
JavaScript
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// Copyright 2015 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 testSeal() {
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var sloppy = arguments;
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var sym = Symbol();
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sloppy[sym] = 123;
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Object.seal(sloppy);
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assertTrue(Object.isSealed(sloppy));
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var desc = Object.getOwnPropertyDescriptor(sloppy, sym);
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assertEquals(123, desc.value);
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assertFalse(desc.configurable);
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assertTrue(desc.writable);
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})();
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(function testFreeze() {
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var sloppy = arguments;
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var sym = Symbol();
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sloppy[sym] = 123;
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Object.freeze(sloppy);
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assertTrue(Object.isFrozen(sloppy));
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var desc = Object.getOwnPropertyDescriptor(sloppy, sym);
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assertEquals(123, desc.value);
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assertFalse(desc.configurable);
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assertFalse(desc.writable);
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})();
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(function testIsFrozenAndIsSealed() {
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var sym = Symbol();
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var obj = { [sym]: 123 };
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Object.preventExtensions(obj);
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assertFalse(Object.isFrozen(obj));
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assertFalse(Object.isSealed(obj));
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})();
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