mirror of https://github.com/tc39/test262.git
53 lines
2.5 KiB
JavaScript
53 lines
2.5 KiB
JavaScript
/// Copyright (c) 2009 Microsoft Corporation
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///
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/// Redistribution and use in source and binary forms, with or without modification, are permitted provided
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/// that the following conditions are met:
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/// * Redistributions of source code must retain the above copyright notice, this list of conditions and
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/// the following disclaimer.
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/// * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
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/// the following disclaimer in the documentation and/or other materials provided with the distribution.
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/// * Neither the name of Microsoft nor the names of its contributors may be used to
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/// endorse or promote products derived from this software without specific prior written permission.
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///
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/// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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/// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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/// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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/// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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/// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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/// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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/// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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/// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/**
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* @path chapter15/15.2/15.2.3/15.2.3.7/15.2.3.7-6-a-113.js
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* @description Object.defineProperties - 'O' is an Array, test the length property of 'O' is own data property that overrides an inherited data property (15.4.5.1 step 1)
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*/
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function testcase() {
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var arrProtoLen;
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var arr = [0, 1, 2];
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try {
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arrProtoLen = Array.prototype.length;
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Array.prototype.length = 0;
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Object.defineProperty(arr, "2", {
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configurable: false
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});
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Object.defineProperties(arr, {
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length: { value: 1 }
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});
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return false;
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} catch (e) {
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var desc = Object.getOwnPropertyDescriptor(arr, "length");
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return e instanceof TypeError && desc.value === 3 &&
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desc.writable && !desc.enumerable && !desc.configurable;
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} finally {
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Array.prototype.length = arrProtoLen;
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}
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}
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runTestCase(testcase);
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