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: 11.9.3.js 24 ECMA Section: 11.9.3 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@netscape.com 37 Date: 12 november 1997 38*/ 39 var SECTION = "11.9.3"; 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 49function 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} 62function 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", true, void 0 == void 0 ); 69 array[item++] = new TestCase( SECTION, "null == null", true, 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", false, Number.NaN == Number.NaN ); 74 array[item++] = new TestCase( SECTION, "NaN == 0", false, Number.NaN == 0 ); 75 array[item++] = new TestCase( SECTION, "0 == NaN", false, 0 == Number.NaN ); 76 array[item++] = new TestCase( SECTION, "NaN == Infinity", false, Number.NaN == Number.POSITIVE_INFINITY ); 77 array[item++] = new TestCase( SECTION, "Infinity == NaN", false, 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", true, Number.MAX_VALUE == Number.MAX_VALUE ); 82 array[item++] = new TestCase( SECTION, "Number.MIN_VALUE == Number.MIN_VALUE", true, Number.MIN_VALUE == Number.MIN_VALUE ); 83 array[item++] = new TestCase( SECTION, "Number.POSITIVE_INFINITY == Number.POSITIVE_INFINITY", true, Number.POSITIVE_INFINITY == Number.POSITIVE_INFINITY ); 84 array[item++] = new TestCase( SECTION, "Number.NEGATIVE_INFINITY == Number.NEGATIVE_INFINITY", true, 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", true, 0 == 0 ); 89 array[item++] = new TestCase( SECTION, "0 == -0", true, 0 == -0 ); 90 array[item++] = new TestCase( SECTION, "-0 == 0", true, -0 == 0 ); 91 array[item++] = new TestCase( SECTION, "-0 == -0", true, -0 == -0 ); 92 93 // return false. 94 95 array[item++] = new TestCase( SECTION, "0.9 == 1", false, 0.9 == 1 ); 96 array[item++] = new TestCase( SECTION, "0.999999 == 1", false, 0.999999 == 1 ); 97 array[item++] = new TestCase( SECTION, "0.9999999999 == 1", false, 0.9999999999 == 1 ); 98 array[item++] = new TestCase( SECTION, "0.9999999999999 == 1", false, 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'", true, "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", true, true == true ); 111 array[item++] = new TestCase( SECTION, "false == false", true, false == false ); 112 array[item++] = new TestCase( SECTION, "true == false", false, true == false ); 113 array[item++] = new TestCase( SECTION, "false == true", false, 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)", false, new MyObject(true) == new MyObject(true) ); 118 array[item++] = new TestCase( SECTION, "new Boolean(true) == new Boolean(true)", false, new Boolean(true) == new Boolean(true) ); 119 array[item++] = new TestCase( SECTION, "new Boolean(false) == new Boolean(false)", false, new Boolean(false) == new Boolean(false) ); 120 121 122 array[item++] = new TestCase( SECTION, "x = new MyObject(true); y = x; z = x; z == y", true, 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", true, 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", true, 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", true, eval("x = new Boolean(false); y = x; z = x; z == y") ); 126 127 array[item++] = new TestCase( SECTION, "new Boolean(true) == new Boolean(true)", false, new Boolean(true) == new Boolean(true) ); 128 array[item++] = new TestCase( SECTION, "new Boolean(false) == new Boolean(false)", false, 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", true, null == void 0 ); 133 array[item++] = new TestCase( SECTION, "void 0 == null", true, 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'", true, 1 == '1' ); 138 array[item++] = new TestCase( SECTION, "255 == '0xff'", true, 255 == '0xff' ); 139 array[item++] = new TestCase( SECTION, "0 == '\r'", true, 0 == "\r" ); 140 array[item++] = new TestCase( SECTION, "1e19 == '1e19'", true, 1e19 == "1e19" ); 141 142 143 array[item++] = new TestCase( SECTION, "new Boolean(true) == true", true, true == new Boolean(true) ); 144 array[item++] = new TestCase( SECTION, "new MyObject(true) == true", true, true == new MyObject(true) ); 145 146 array[item++] = new TestCase( SECTION, "new Boolean(false) == false", true, new Boolean(false) == false ); 147 array[item++] = new TestCase( SECTION, "new MyObject(false) == false", true, new MyObject(false) == false ); 148 149 array[item++] = new TestCase( SECTION, "true == new Boolean(true)", true, true == new Boolean(true) ); 150 array[item++] = new TestCase( SECTION, "true == new MyObject(true)", true, true == new MyObject(true) ); 151 152 array[item++] = new TestCase( SECTION, "false == new Boolean(false)", true, false == new Boolean(false) ); 153 array[item++] = new TestCase( SECTION, "false == new MyObject(false)", true, false == new MyObject(false) ); 154 155 return ( array ); 156} 157 158function MyObject( value ) { 159 this.value = value; 160 this.valueOf = new Function( "return this.value" ); 161}