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| 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; }()); |
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