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 some expression contexts involving short-circuit boolean |
| 29 | // operations that did not otherwise have test coverage. |
| 30 | |
| 31 | |
| 32 | var x = 42; |
| 33 | |
| 34 | // Literals in value/test context. |
| 35 | assertEquals(x, function () { return 0 || x }()); |
| 36 | assertEquals(1, function () { return 1 || x }()); |
| 37 | |
| 38 | // Literals in test/value context. |
| 39 | assertEquals(0, function () { return 0 && x }()); |
| 40 | assertEquals(x, function () { return 1 && x }()); |
| 41 | |
| 42 | // A value on top of the stack in value/test context. |
| 43 | assertEquals(x, function(y) { return y++ || x }(0)); |
| 44 | assertEquals(1, function(y) { return y++ || x }(1)); |
| 45 | |
| 46 | // A value on top of the stack in a test/value context. |
| 47 | assertEquals(0, function(y) { return y++ && x }(0)); |
| 48 | assertEquals(x, function(y) { return y++ && x }(1)); |
| 49 | |
| 50 | // An object literal in value context. |
| 51 | assertEquals(0, function () { return {x: 0}}().x); |
| 52 | |
| 53 | // An object literal in value/test context. |
| 54 | assertEquals(0, function () { return {x: 0} || this }().x); |
| 55 | |
| 56 | // An object literal in test/value context. |
| 57 | assertEquals(x, function () { return {x: 0} && this }().x); |
| 58 | |
| 59 | // An array literal in value/test context. |
| 60 | assertEquals(0, function () { return [0,1] || new Array(x,1) }()[0]); |
| 61 | |
| 62 | // An array literal in test/value context. |
| 63 | assertEquals(x, function () { return [0,1] && new Array(x,1) }()[0]); |
| 64 | |
| 65 | // Slot assignment in value/test context. |
| 66 | assertEquals(x, function (y) { return (y = 0) || x }("?")); |
| 67 | assertEquals(1, function (y) { return (y = 1) || x }("?")); |
| 68 | |
| 69 | // Slot assignment in test/value context. |
| 70 | assertEquals(0, function (y) { return (y = 0) && x }("?")); |
| 71 | assertEquals(x, function (y) { return (y = 1) && x }("?")); |
| 72 | |
| 73 | // void in value context. |
| 74 | assertEquals(void 0, function () { return void x }()); |
| 75 | |
| 76 | // void in value/test context. |
| 77 | assertEquals(x, function () { return (void x) || x }()); |
| 78 | |
| 79 | // void in test/value context. |
| 80 | assertEquals(void 0, function () { return (void x) && x }()); |
| 81 | |
| 82 | // Unary not in value context. |
| 83 | assertEquals(false, function () { return !x }()); |
| 84 | |
| 85 | // Unary not in value/test context. |
| 86 | assertEquals(true, function (y) { return !y || x }(0)); |
| 87 | assertEquals(x, function (y) { return !y || x }(1)); |
| 88 | |
| 89 | // Unary not in test/value context. |
| 90 | assertEquals(x, function (y) { return !y && x }(0)); |
| 91 | assertEquals(false, function (y) { return !y && x }(1)); |
| 92 | |
| 93 | // Comparison in value context. |
| 94 | assertEquals(false, function () { return x < x; }()); |
| 95 | |
| 96 | // Comparison in value/test context. |
| 97 | assertEquals(x, function () { return x < x || x; }()); |
| 98 | assertEquals(true, function () { return x <= x || x; }()); |
| 99 | |
| 100 | // Comparison in test/value context. |
| 101 | assertEquals(false, function () { return x < x && x; }()); |
| 102 | assertEquals(x, function () { return x <= x && x; }()); |