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30 lines
1.3 KiB
JavaScript
30 lines
1.3 KiB
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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* @path ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-9.js
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* @description Array.prototype.lastIndexOf must return correct index (Sparse Array)
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*/
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function testcase() {
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var a = new Array(0,1);
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a[4294967294] = 2; // 2^32-2 - is max array element index
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a[4294967295] = 3; // 2^32-1 added as non-array element property
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a[4294967296] = 4; // 2^32 added as non-array element property
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a[4294967297] = 5; // 2^32+1 added as non-array element property
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// stop searching near the end in case implementation actually tries to test all missing elements!!
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a[4294967200] = 3;
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a[4294967201] = 4;
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a[4294967202] = 5;
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return (a.lastIndexOf(2) === 4294967294 &&
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a.lastIndexOf(3) === 4294967200 &&
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a.lastIndexOf(4) === 4294967201 &&
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a.lastIndexOf(5) === 4294967202) ;
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}
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runTestCase(testcase);
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