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/
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.
11 * The Original Code is Mozilla Communicator client code, released March
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
24 ECMA Section: 11.9.3 The equals operator ( == )
27 The production EqualityExpression:
28 EqualityExpression == RelationalExpression is evaluated as follows:
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)
36 Author: christine@netscape.com
37 Date: 12 november 1997
39 var SECTION = "11.9.3";
40 var VERSION = "ECMA_1";
42 var BUGNUMBER="77391";
44 var testcases = getTestCases();
46 writeHeaderToLog( SECTION + " The equals operator ( == )");
50 for ( tc=0; tc < testcases.length; tc++ ) {
51 testcases[tc].passed = writeTestCaseResult(
54 testcases[tc].description +" = "+
55 testcases[tc].actual );
57 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
62 function getTestCases() {
63 var array = new Array();
66 // type x and type y are the same. if type x is undefined or null, return true
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 );
71 // if x is NaN, return false. if y is NaN, return false.
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 );
79 // if x is the same number value as y, return true.
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 );
86 // if xis 0 and y is -0, return true. if x is -0 and y is 0, return true.
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 );
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 );
100 // type x and type y are the same type, but not numbers.
103 // x and y are strings. return true if x and y are exactly the same sequence of characters.
104 // otherwise, return false.
106 array[item++] = new TestCase( SECTION, "'hello' == 'hello'", true, "hello" == "hello" );
108 // x and y are booleans. return true if both are true or both are false.
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 );
115 // return true if x and y refer to the same object. otherwise return false.
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) );
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") );
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) );
130 // if x is null and y is undefined, return true. if x is undefined and y is null return true.
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 );
135 // if type(x) is Number and type(y) is string, return the result of the comparison x == ToNumber(y).
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" );
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) );
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 );
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) );
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) );
158 function MyObject( value ) {
160 this.valueOf = new Function( "return this.value" );