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   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:          11.1.1.js
  24     ECMA Section:       11.1.1 The this keyword
  25     Description:
  26
  27     The this keyword evaluates to the this value of the execution context.
  28
  29     Author:             christine@netscape.com
  30     Date:               12 november 1997
  31 */
  32     var SECTION = "11.1.1";
  33     var VERSION = "ECMA_1";
  34     startTest();
  35
  36     writeHeaderToLog( SECTION + " The this keyword");
  37
  38     var testcases = new Array();
  39     var item = 0;
  40
  41     var GLOBAL_OBJECT = this.toString();
  42
  43     // this in global code and eval(this) in global code should return the global object.
  44
  45     testcases[item++] = new TestCase(   SECTION,
  46                                         "Global Code: this.toString()",
  47                                         GLOBAL_OBJECT,
  48                                         this.toString() );
  49
  50     testcases[item++] = new TestCase(   SECTION,
  51                                         "Global Code:  eval('this.toString()')",
  52                                         GLOBAL_OBJECT,
  53                                         eval('this.toString()') );
  54
  55     // this in anonymous code called as a function should return the global object.
  56
  57     testcases[item++] = new TestCase(   SECTION,
  58                                         "Anonymous Code: var MYFUNC = new Function('return this.toString()'); MYFUNC()",
  59                                         GLOBAL_OBJECT,
  60                                         eval("var MYFUNC = new Function('return this.toString()'); MYFUNC()") );
  61
  62     // eval( this ) in anonymous code called as a function should return that function's activation object
  63
  64     testcases[item++] = new TestCase(   SECTION,
  65                                         "Anonymous Code: var MYFUNC = new Function('return (eval(\"this.toString()\")'); (MYFUNC()).toString()",
  66                                         GLOBAL_OBJECT,
  67                                         eval("var MYFUNC = new Function('return eval(\"this.toString()\")'); (MYFUNC()).toString()") );
  68
  69     // this and eval( this ) in anonymous code called as a constructor should return the object
  70
  71     testcases[item++] = new TestCase(   SECTION,
  72                                         "Anonymous Code: var MYFUNC = new Function('this.THIS = this'); ((new MYFUNC()).THIS).toString()",
  73                                         "[object Object]",
  74                                         eval("var MYFUNC = new Function('this.THIS = this'); ((new MYFUNC()).THIS).toString()") );
  75
  76     testcases[item++] = new TestCase(   SECTION,
  77                                         "Anonymous Code: var MYFUNC = new Function('this.THIS = this'); var FUN1 = new MYFUNC(); FUN1.THIS == FUN1",
  78                                         true,
  79                                         eval("var MYFUNC = new Function('this.THIS = this'); var FUN1 = new MYFUNC(); FUN1.THIS == FUN1") );
  80
  81     testcases[item++] = new TestCase(   SECTION,
  82                                         "Anonymous Code: var MYFUNC = new Function('this.THIS = eval(\"this\")'); ((new MYFUNC().THIS).toString()",
  83                                         "[object Object]",
  84                                         eval("var MYFUNC = new Function('this.THIS = eval(\"this\")'); ((new MYFUNC()).THIS).toString()") );
  85
  86     testcases[item++] = new TestCase(   SECTION,
  87                                         "Anonymous Code: var MYFUNC = new Function('this.THIS = eval(\"this\")'); var FUN1 = new MYFUNC(); FUN1.THIS == FUN1",
  88                                         true,
  89                                         eval("var MYFUNC = new Function('this.THIS = eval(\"this\")'); var FUN1 = new MYFUNC(); FUN1.THIS == FUN1") );
  90
  91     // this and eval(this) in function code called as a function should return the global object.
  92     testcases[item++] = new TestCase(   SECTION,
  93                                         "Function Code:  ReturnThis()",
  94                                         GLOBAL_OBJECT,
  95                                         ReturnThis() );
  96
  97     testcases[item++] = new TestCase(   SECTION,
  98                                         "Function Code:  ReturnEvalThis()",
  99                                         GLOBAL_OBJECT,
 100                                         ReturnEvalThis() );
 101
 102     //  this and eval(this) in function code called as a contructor should return the object.
 103     testcases[item++] = new TestCase(   SECTION,
 104                                         "var MYOBJECT = new ReturnThis(); MYOBJECT.toString()",
 105                                         "[object Object]",
 106                                         eval("var MYOBJECT = new ReturnThis(); MYOBJECT.toString()") );
 107
 108     testcases[item++] = new TestCase(   SECTION,
 109                                         "var MYOBJECT = new ReturnEvalThis(); MYOBJECT.toString()",
 110                                         "[object Object]",
 111                                         eval("var MYOBJECT = new ReturnEvalThis(); MYOBJECT.toString()") );
 112
 113
 114
 115     test();
 116
 117 function test() {
 118     for ( tc=0; tc < testcases.length; tc++ ) {
 119         testcases[tc].passed = writeTestCaseResult(
 120                             testcases[tc].expect,
 121                             testcases[tc].actual,
 122                             testcases[tc].description +" = "+
 123                             testcases[tc].actual );
 124
 125         testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
 126     }
 127     stopTest();
 128     return ( testcases );
 129 }
 130 function ReturnThis() {
 131     return this.toString();
 132 }
 133 function ReturnEvalThis() {
 134     return( eval("this.toString()") );
 135 }