1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2009 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Regexp shouldn't use String.prototype.slice() 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar s = new String("foo"); 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("f", s.slice(0,1)); 31257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochString.prototype.slice = function() { return "x"; }; 32a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("x", s.slice(0,1)); 33257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochassertEquals(["g"], /g/.exec("gg")); 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Regexp shouldn't use String.prototype.charAt() 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar f1 = new RegExp("f", "i"); 37257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochassertEquals(["F"], f1.exec("F")); 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("f", "foo".charAt(0)); 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockString.prototype.charAt = function(idx) { return 'g'; }; 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("g", "foo".charAt(0)); 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar f2 = new RegExp("[g]", "i"); 42257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochassertEquals(["G"], f2.exec("G")); 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertTrue(f2.ignoreCase); 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// On the other hand test is defined in a semi-coherent way as a call to exec. 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 15.10.6.3 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// We match other browsers in using the original value of RegExp.prototype.exec. 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// I.e., RegExp.prototype.test shouldn't use the current value of 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// RegExp.prototype.exec. 50257744e915dfc84d6d07a6b2accf8402d9ffc708Ben MurdochRegExp.prototype.exec = function(string) { return 'x'; }; 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertFalse(/f/.test('x')); 52