mirror of https://github.com/tc39/test262.git
25 lines
826 B
JavaScript
25 lines
826 B
JavaScript
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// Copyright (C) 2017 Claude Pache. 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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esid: sec-invariants-of-the-essential-internal-methods
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description: >
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A property made non-writable, non-configurable must not be reported as writable
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("$1" property of the RegExp built-in)
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info: |
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[[GetOwnProperty]] (P)
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[...]
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- If the [[Writable]] attribute may change from false to true,
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then the [[Configurable]] attribute must be true..
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[...]
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(This invariant was violated for the specific property under test by at least
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one implementation as of January 2017.)
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---*/
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if (Reflect.defineProperty(RegExp, '$1', {
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writable: false,
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configurable: false
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})) {
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var desc = Reflect.getOwnPropertyDescriptor(RegExp, '$1');
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assert.sameValue(desc.writable, false);
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}
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