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Edit File: regress-1790.js
// Copyright 2012 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Regression test checking that the sequence of element access in built-in // array functions is specification conform (i.e. [[HasProperty]] might return // bogus result after [[Get]] has been called). function CheckSequence(builtin, callback) { var array = [1,2,3]; var callback_count = 0; var callback_wrapper = function() { callback_count++; return callback() } // Define getter that will delete itself upon first invocation. Object.defineProperty(array, '1', { get: function () { delete array[1]; }, configurable: true }); assertTrue(array.hasOwnProperty('1')); builtin.apply(array, [callback_wrapper, 'argument']); assertFalse(array.hasOwnProperty('1')); assertEquals(3, callback_count); } CheckSequence(Array.prototype.every, function() { return true; }); CheckSequence(Array.prototype.filter, function() { return true; }); CheckSequence(Array.prototype.forEach, function() { return 0; }); CheckSequence(Array.prototype.map, function() { return 0; }); CheckSequence(Array.prototype.reduce, function() { return 0; }); CheckSequence(Array.prototype.reduceRight, function() { return 0; }); CheckSequence(Array.prototype.some, function() { return false; });