mirror of https://github.com/tc39/test262.git
31 lines
951 B
JavaScript
31 lines
951 B
JavaScript
// 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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es5id: 11.13.2-49-s
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description: >
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Strict Mode - TypeError is thrown if The LeftHandSide of a
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Compound Assignment operator(-=) is a reference to a non-existent
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property of an object whose [[Extensible]] internal property if
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false
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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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"use strict";
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var obj = {};
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Object.preventExtensions(obj);
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try {
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obj.len -= 10;
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return false;
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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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