tests/mozilla/ecma/Expressions/11.9.2.js

   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@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 }