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34 lines
1.2 KiB
JavaScript
34 lines
1.2 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 ch15/15.4/15.4.4/15.4.4.22/15.4.4.22-7-7.js
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* @description Array.prototype.reduceRight returns initialValue if 'length' is 0 and initialValue is present (subclassed Array, length overridden with obj w/o valueOf (toString))
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*/
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function testcase() {
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foo.prototype = new Array(1, 2, 3);
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function foo() {}
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var f = new foo();
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var o = { toString: function () { return '0';}};
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f.length = o;
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// objects inherit the default valueOf method of the Object object;
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// that simply returns the itself. Since the default valueOf() method
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// does not return a primitive value, ES next tries to convert the object
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// to a number by calling its toString() method and converting the
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// resulting string to a number.
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function cb(){}
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try {
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if(f.reduceRight(cb,1) === 1)
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return true;
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}
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catch (e) { }
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}
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runTestCase(testcase);
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