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24 lines
830 B
JavaScript
24 lines
830 B
JavaScript
// Copyright (c) 2012 Ecma International. 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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info: |
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This test is actually testing the [[Delete]] internal method (8.12.8). Since the
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language provides no way to directly exercise [[Delete]], the tests are placed here.
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es5id: 11.4.1-4.a-3
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description: >
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delete operator returns false when deleting a non-configurable
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data property
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flags: [noStrict]
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---*/
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var o = {};
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var desc = { value : 1, configurable: false }; // all other attributes default to false
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Object.defineProperty(o, "foo", desc);
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// Now, deleting o.foo should fail because [[Configurable]] on foo is false.
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var d = delete o.foo;
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assert.sameValue(d, false, 'd');
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assert.sameValue(o.hasOwnProperty("foo"), true, 'o.hasOwnProperty("foo")');
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