Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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 | |
| 31 | function 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 | |
| 50 | testString(); |
| 51 | |
| 52 | |
| 53 | function 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 | |
| 72 | testNumber(); |
| 73 | |
| 74 | |
| 75 | function 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 | |
| 94 | testBoolean(); |