Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame^] | 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 | // Test pre- and postfix count operations. |
| 29 | |
| 30 | // Test value context. |
| 31 | var a = 42; |
| 32 | var b = {x:42}; |
| 33 | var c = "x"; |
| 34 | assertEquals(43, ++a); |
| 35 | assertEquals(43, a); |
| 36 | assertEquals(43, a++); |
| 37 | assertEquals(44, a); |
| 38 | assertEquals(43, ++b.x); |
| 39 | assertEquals(43, b.x); |
| 40 | assertEquals(43, b.x++); |
| 41 | assertEquals(44, b.x); |
| 42 | assertEquals(45, ++b[c]); |
| 43 | assertEquals(45, b[c]); |
| 44 | assertEquals(45, b[c]++); |
| 45 | assertEquals(46, b[c]); |
| 46 | |
| 47 | // Test effect context. |
| 48 | a = 42; |
| 49 | b = {x:42}; |
| 50 | c = "x"; |
| 51 | assertEquals(1, eval("++a; 1")); |
| 52 | assertEquals(43, a); |
| 53 | assertEquals(1, eval("a++; 1")); |
| 54 | assertEquals(44, a); |
| 55 | assertEquals(1, eval("++b.x; 1")); |
| 56 | assertEquals(43, b.x); |
| 57 | assertEquals(1, eval("b.x++; 1")); |
| 58 | assertEquals(44, b.x); |
| 59 | assertEquals(1, eval("++b[c]; 1")); |
| 60 | assertEquals(45, b[c]); |
| 61 | assertEquals(1, eval("b[c]++; 1")); |
| 62 | assertEquals(46, b[c]); |
| 63 | |
| 64 | // Test test context. |
| 65 | a = 42; |
| 66 | b = {x:42}; |
| 67 | c = "x"; |
| 68 | assertEquals(1, (++a) ? 1 : 0); |
| 69 | assertEquals(43, a); |
| 70 | assertEquals(1, (a++) ? 1 : 0); |
| 71 | assertEquals(44, a); |
| 72 | assertEquals(1, (++b.x) ? 1 : 0); |
| 73 | assertEquals(43, b.x); |
| 74 | assertEquals(1, (b.x++) ? 1 : 0); |
| 75 | assertEquals(44, b.x); |
| 76 | assertEquals(1, (++b[c]) ? 1 : 0); |
| 77 | assertEquals(45, b[c]); |
| 78 | assertEquals(1, (b[c]++) ? 1 : 0); |
| 79 | assertEquals(46, b[c]); |
| 80 | |
| 81 | // Test value/test and test/value contexts. |
| 82 | a = 42; |
| 83 | b = {x:42}; |
| 84 | c = "x"; |
| 85 | assertEquals(43, ++a || 1); |
| 86 | assertEquals(43, a); |
| 87 | assertEquals(43, a++ || 1); |
| 88 | assertEquals(44, a); |
| 89 | assertEquals(43, ++b.x || 1); |
| 90 | assertEquals(43, b.x); |
| 91 | assertEquals(43, (b.x++) || 1); |
| 92 | assertEquals(44, b.x); |
| 93 | assertEquals(45, ++b[c] || 1); |
| 94 | assertEquals(45, b[c]); |
| 95 | assertEquals(45, b[c]++ || 1); |
| 96 | assertEquals(46, b[c]); |
| 97 | a = 42; |
| 98 | b = {x:42}; |
| 99 | c = "x"; |
| 100 | assertEquals(1, ++a && 1); |
| 101 | assertEquals(43, a); |
| 102 | assertEquals(1, a++ && 1); |
| 103 | assertEquals(44, a); |
| 104 | assertEquals(1, ++b.x && 1); |
| 105 | assertEquals(43, b.x); |
| 106 | assertEquals(1, (b.x++) && 1); |
| 107 | assertEquals(44, b.x); |
| 108 | assertEquals(1, ++b[c] && 1); |
| 109 | assertEquals(45, b[c]); |
| 110 | assertEquals(1, b[c]++ && 1); |
| 111 | assertEquals(46, b[c]); |