1 // Copyright 2009 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 // Regexp shouldn't use String.prototype.slice() 29 var s = new String("foo"); 30 assertEquals("f", s.slice(0,1)); 31 String.prototype.slice = function() { return "x"; }; 32 assertEquals("x", s.slice(0,1)); 33 assertEquals(["g"], /g/.exec("gg")); 34 35 // Regexp shouldn't use String.prototype.charAt() 36 var f1 = new RegExp("f", "i"); 37 assertEquals(["F"], f1.exec("F")); 38 assertEquals("f", "foo".charAt(0)); 39 String.prototype.charAt = function(idx) { return 'g'; }; 40 assertEquals("g", "foo".charAt(0)); 41 var f2 = new RegExp("[g]", "i"); 42 assertEquals(["G"], f2.exec("G")); 43 assertTrue(f2.ignoreCase); 44 45 // On the other hand test is defined in a semi-coherent way as a call to exec. 46 // 15.10.6.3 47 // We match other browsers in using the original value of RegExp.prototype.exec. 48 // I.e., RegExp.prototype.test shouldn't use the current value of 49 // RegExp.prototype.exec. 50 RegExp.prototype.exec = function(string) { return 'x'; }; 51 assertFalse(/f/.test('x')); 52
