1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24 description("test that comparison operators work correctly.") 25 26 function makeTest(start, end, expression, relationship, override, invert) { 27 var resultValue = eval(relationship + expression + 0) || !!override; 28 if (invert) 29 resultValue = !resultValue; 30 var expr = start + expression + end; 31 var result = []; 32 function func(content) { var f = new Function(content); f.toString = function(){ return content}; return f; } 33 result.push([new func("return " + expr + ";"), resultValue]); 34 result.push([new func("if (" + expr + ") return true; return false;"), resultValue]); 35 result.push([new func("var k = 0; while (" + expr + ") if (k++) return true; return false;"), resultValue]); 36 result.push([new func("var k = 0; for (; " + expr + "; ) if (k++) return true; return false;"), resultValue]); 37 return result; 38 } 39 function doTest(lhs, rhs, relationship) { 40 var expressionParts = [["(",")"],["(", ") || 1", true],["(", ") && 1"],["(", ") || 1", true],["1 || (",")", true],["1 && (",")"]]; 41 var expressions = []; 42 var tests = []; 43 for (var i = 0; i < expressionParts.length; i++) { 44 var start = expressionParts[i][0] + lhs; 45 var end = String(rhs) + expressionParts[i][1]; 46 tests.push.apply(tests, makeTest(start, end, "==", relationship, expressionParts[i][2])); 47 tests.push.apply(tests, makeTest(start, end, "!=", relationship, expressionParts[i][2])); 48 tests.push.apply(tests, makeTest(start, end, "===", relationship, expressionParts[i][2])); 49 tests.push.apply(tests, makeTest(start, end, "!==", relationship, expressionParts[i][2])); 50 } 51 for (var i = 0; i < tests.length; i++) { 52 if ((r=tests[i][0]()) == tests[i][1]) 53 testPassed(tests[i][0] + " is " + tests[i][1]); 54 else 55 testFailed(tests[i][0] + " is " + r + " and should be " + tests[i][1] + "."); 56 } 57 } 58 59 var letterA = "a"; 60 var letterB = "b"; 61 var One = 1; 62 var Zero = 0; 63 doTest('"a"', '"b"', -1); 64 doTest('"a"', '"a"', 0); 65 doTest('"b"', '"a"', 1); 66 doTest('letterA', '"b"', -1); 67 doTest('letterA', '"a"', 0); 68 doTest('"b"', '"a"', 1); 69 doTest('letterA', '"b"', -1); 70 doTest('letterA', 'letterA', 0); 71 doTest('"b"', 'letterA', 1); 72 doTest('"a"', '"b"', -1); 73 doTest('"a"', 'letterA', 0); 74 doTest('"b"', 'letterA', 1); 75 76 doTest('"a"', '0', NaN); 77 doTest('0', '"a"', NaN); 78 doTest('letterA', '0', NaN); 79 doTest('letterA', '"a"', 0); 80 doTest('0', '"a"', NaN); 81 doTest('letterA', 'letterA', 0); 82 doTest('0', 'letterA', NaN); 83 doTest('"a"', 'letterA', 0); 84 doTest('0', 'letterA', NaN); 85 86 87 doTest('0', '1', -1); 88 doTest('0', '0', 0); 89 doTest('1', '0', 1); 90 doTest('Zero', '1', -1); 91 doTest('Zero', '0', 0); 92 doTest('1', 'Zero', 1); 93 doTest('0', 'One', -1); 94 doTest('One', '0', 1); 95
