mirror of https://github.com/tc39/test262.git
56 lines
2.8 KiB
JavaScript
56 lines
2.8 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 chapter15/15.4/15.4.4/15.4.4.17/15.4.4.17-8-8.js
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* @description Array.prototype.some returns false if 'length' is 0 (subclassed Array, length overridden with []
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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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f.length = [];
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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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//
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// The toString( ) method on Array converts the array elements to strings,
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// then returns the result of concatenating these strings, with commas in
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// between. An array with no elements converts to the empty string, which
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// converts to the number 0. If an array has a single element that is a
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// number n, the array converts to a string representation of n, which is
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// then converted back to n itself. If an array contains more than one element,
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// or if its one element is not a number, the array converts to NaN.
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function cb(){}
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var i = f.some(cb);
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if (i === false) {
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return true;
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}
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}
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runTestCase(testcase);
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