mirror of https://github.com/tc39/test262.git
34 lines
1.1 KiB
JavaScript
34 lines
1.1 KiB
JavaScript
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// Copyright (c) 2012 Ecma International. All rights reserved.
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// Ecma International makes this code available under the terms and conditions set
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// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
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// "Use Terms"). Any redistribution of this code must retain the above
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// copyright and this notice and otherwise comply with the Use Terms.
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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-s
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description: >
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delete operator throws TypeError when deleting a non-configurable
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data property in strict mode
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flags: [onlyStrict]
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includes: [runTestCase.js]
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---*/
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function testcase() {
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var o = {};
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var desc = { value : 1 }; // all other attributes default to false
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Object.defineProperty(o, "foo", desc);
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// Now, deleting o.foo should throw TypeError because [[Configurable]] on foo is false.
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try {
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delete o.foo;
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return false;
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}
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catch (e) {
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return (e instanceof TypeError);
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}
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}
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runTestCase(testcase);
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