1// Copyright 2008 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// Test that the inline caches correctly detect that constant 29// functions on value prototypes change. 30 31function testString() { 32 function f(s, expected) { 33 var result = s.toString(); 34 assertEquals(expected, result); 35 }; 36 37 for (var i = 0; i < 10; i++) { 38 var s = String.fromCharCode(i); 39 f(s, s); 40 } 41 42 String.prototype.toString = function() { return "ostehaps"; }; 43 44 for (var i = 0; i < 10; i++) { 45 var s = String.fromCharCode(i); 46 f(s, "ostehaps"); 47 } 48} 49 50testString(); 51 52 53function testNumber() { 54 Number.prototype.toString = function() { return 0; }; 55 56 function f(n, expected) { 57 var result = n.toString(); 58 assertEquals(expected, result); 59 }; 60 61 for (var i = 0; i < 10; i++) { 62 f(i, 0); 63 } 64 65 Number.prototype.toString = function() { return 42; }; 66 67 for (var i = 0; i < 10; i++) { 68 f(i, 42); 69 } 70} 71 72testNumber(); 73 74 75function testBoolean() { 76 Boolean.prototype.toString = function() { return 0; }; 77 78 function f(b, expected) { 79 var result = b.toString(); 80 assertEquals(expected, result); 81 }; 82 83 for (var i = 0; i < 10; i++) { 84 f((i % 2 == 0), 0); 85 } 86 87 Boolean.prototype.toString = function() { return 42; }; 88 89 for (var i = 0; i < 10; i++) { 90 f((i % 2 == 0), 42); 91 } 92} 93 94testBoolean(); 95