1 /* The contents of this file are subject to the Netscape Public 2 * License Version 1.1 (the "License"); you may not use this file 3 * except in compliance with the License. You may obtain a copy of 4 * the License at http://www.mozilla.org/NPL/ 5 * 6 * Software distributed under the License is distributed on an "AS 7 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 8 * implied. See the License for the specific language governing 9 * rights and limitations under the License. 10 * 11 * The Original Code is Mozilla Communicator client code, released March 12 * 31, 1998. 13 * 14 * The Initial Developer of the Original Code is Netscape Communications 15 * Corporation. Portions created by Netscape are 16 * Copyright (C) 1998 Netscape Communications Corporation. All 17 * Rights Reserved. 18 * 19 * Contributor(s): 20 * 21 */ 22 /** 23 File Name: 11.9.2.js 24 ECMA Section: 11.9.2 The equals operator ( == ) 25 Description: 26 27 The production EqualityExpression: 28 EqualityExpression == RelationalExpression is evaluated as follows: 29 30 1. Evaluate EqualityExpression. 31 2. Call GetValue(Result(1)). 32 3. Evaluate RelationalExpression. 33 4. Call GetValue(Result(3)). 34 5. Perform the comparison Result(4) == Result(2). (See section 11.9.3) 35 6. Return Result(5). 36 Author: christine (at) netscape.com 37 Date: 12 november 1997 38 */ 39 var SECTION = "11.9.2"; 40 var VERSION = "ECMA_1"; 41 startTest(); 42 var BUGNUMBER="77391"; 43 44 var testcases = getTestCases(); 45 46 writeHeaderToLog( SECTION + " The equals operator ( == )"); 47 test(); 48 49 function test() { 50 for ( tc=0; tc < testcases.length; tc++ ) { 51 testcases[tc].passed = writeTestCaseResult( 52 testcases[tc].expect, 53 testcases[tc].actual, 54 testcases[tc].description +" = "+ 55 testcases[tc].actual ); 56 57 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "; 58 } 59 stopTest(); 60 return ( testcases ); 61 } 62 function getTestCases() { 63 var array = new Array(); 64 var item = 0; 65 66 // type x and type y are the same. if type x is undefined or null, return true 67 68 array[item++] = new TestCase( SECTION, "void 0 == void 0", false, void 0 != void 0 ); 69 array[item++] = new TestCase( SECTION, "null == null", false, null != null ); 70 71 // if x is NaN, return false. if y is NaN, return false. 72 73 array[item++] = new TestCase( SECTION, "NaN != NaN", true, Number.NaN != Number.NaN ); 74 array[item++] = new TestCase( SECTION, "NaN != 0", true, Number.NaN != 0 ); 75 array[item++] = new TestCase( SECTION, "0 != NaN", true, 0 != Number.NaN ); 76 array[item++] = new TestCase( SECTION, "NaN != Infinity", true, Number.NaN != Number.POSITIVE_INFINITY ); 77 array[item++] = new TestCase( SECTION, "Infinity != NaN", true, Number.POSITIVE_INFINITY != Number.NaN ); 78 79 // if x is the same number value as y, return true. 80 81 array[item++] = new TestCase( SECTION, "Number.MAX_VALUE != Number.MAX_VALUE", false, Number.MAX_VALUE != Number.MAX_VALUE ); 82 array[item++] = new TestCase( SECTION, "Number.MIN_VALUE != Number.MIN_VALUE", false, Number.MIN_VALUE != Number.MIN_VALUE ); 83 array[item++] = new TestCase( SECTION, "Number.POSITIVE_INFINITY != Number.POSITIVE_INFINITY", false, Number.POSITIVE_INFINITY != Number.POSITIVE_INFINITY ); 84 array[item++] = new TestCase( SECTION, "Number.NEGATIVE_INFINITY != Number.NEGATIVE_INFINITY", false, Number.NEGATIVE_INFINITY != Number.NEGATIVE_INFINITY ); 85 86 // if xis 0 and y is -0, return true. if x is -0 and y is 0, return true. 87 88 array[item++] = new TestCase( SECTION, "0 != 0", false, 0 != 0 ); 89 array[item++] = new TestCase( SECTION, "0 != -0", false, 0 != -0 ); 90 array[item++] = new TestCase( SECTION, "-0 != 0", false, -0 != 0 ); 91 array[item++] = new TestCase( SECTION, "-0 != -0", false, -0 != -0 ); 92 93 // return false. 94 95 array[item++] = new TestCase( SECTION, "0.9 != 1", true, 0.9 != 1 ); 96 array[item++] = new TestCase( SECTION, "0.999999 != 1", true, 0.999999 != 1 ); 97 array[item++] = new TestCase( SECTION, "0.9999999999 != 1", true, 0.9999999999 != 1 ); 98 array[item++] = new TestCase( SECTION, "0.9999999999999 != 1", true, 0.9999999999999 != 1 ); 99 100 // type x and type y are the same type, but not numbers. 101 102 103 // x and y are strings. return true if x and y are exactly the same sequence of characters. 104 // otherwise, return false. 105 106 array[item++] = new TestCase( SECTION, "'hello' != 'hello'", false, "hello" != "hello" ); 107 108 // x and y are booleans. return true if both are true or both are false. 109 110 array[item++] = new TestCase( SECTION, "true != true", false, true != true ); 111 array[item++] = new TestCase( SECTION, "false != false", false, false != false ); 112 array[item++] = new TestCase( SECTION, "true != false", true, true != false ); 113 array[item++] = new TestCase( SECTION, "false != true", true, false != true ); 114 115 // return true if x and y refer to the same object. otherwise return false. 116 117 array[item++] = new TestCase( SECTION, "new MyObject(true) != new MyObject(true)", true, new MyObject(true) != new MyObject(true) ); 118 array[item++] = new TestCase( SECTION, "new Boolean(true) != new Boolean(true)", true, new Boolean(true) != new Boolean(true) ); 119 array[item++] = new TestCase( SECTION, "new Boolean(false) != new Boolean(false)", true, new Boolean(false) != new Boolean(false) ); 120 121 122 array[item++] = new TestCase( SECTION, "x = new MyObject(true); y = x; z = x; z != y", false, eval("x = new MyObject(true); y = x; z = x; z != y") ); 123 array[item++] = new TestCase( SECTION, "x = new MyObject(false); y = x; z = x; z != y", false, eval("x = new MyObject(false); y = x; z = x; z != y") ); 124 array[item++] = new TestCase( SECTION, "x = new Boolean(true); y = x; z = x; z != y", false, eval("x = new Boolean(true); y = x; z = x; z != y") ); 125 array[item++] = new TestCase( SECTION, "x = new Boolean(false); y = x; z = x; z != y", false, eval("x = new Boolean(false); y = x; z = x; z != y") ); 126 127 array[item++] = new TestCase( SECTION, "new Boolean(true) != new Boolean(true)", true, new Boolean(true) != new Boolean(true) ); 128 array[item++] = new TestCase( SECTION, "new Boolean(false) != new Boolean(false)", true, new Boolean(false) != new Boolean(false) ); 129 130 // if x is null and y is undefined, return true. if x is undefined and y is null return true. 131 132 array[item++] = new TestCase( SECTION, "null != void 0", false, null != void 0 ); 133 array[item++] = new TestCase( SECTION, "void 0 != null", false, void 0 != null ); 134 135 // if type(x) is Number and type(y) is string, return the result of the comparison x != ToNumber(y). 136 137 array[item++] = new TestCase( SECTION, "1 != '1'", false, 1 != '1' ); 138 array[item++] = new TestCase( SECTION, "255 != '0xff'", false, 255 != '0xff' ); 139 array[item++] = new TestCase( SECTION, "0 != '\r'", false, 0 != "\r" ); 140 array[item++] = new TestCase( SECTION, "1e19 != '1e19'", false, 1e19 != "1e19" ); 141 142 143 array[item++] = new TestCase( SECTION, "new Boolean(true) != true", false, true != new Boolean(true) ); 144 array[item++] = new TestCase( SECTION, "new MyObject(true) != true", false, true != new MyObject(true) ); 145 146 array[item++] = new TestCase( SECTION, "new Boolean(false) != false", false, new Boolean(false) != false ); 147 array[item++] = new TestCase( SECTION, "new MyObject(false) != false", false, new MyObject(false) != false ); 148 149 array[item++] = new TestCase( SECTION, "true != new Boolean(true)", false, true != new Boolean(true) ); 150 array[item++] = new TestCase( SECTION, "true != new MyObject(true)", false, true != new MyObject(true) ); 151 152 array[item++] = new TestCase( SECTION, "false != new Boolean(false)", false, false != new Boolean(false) ); 153 array[item++] = new TestCase( SECTION, "false != new MyObject(false)", false, false != new MyObject(false) ); 154 155 return ( array ); 156 } 157 158 function MyObject( value ) { 159 this.value = value; 160 this.valueOf = new Function( "return this.value" ); 161 }
