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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:          15.9.5.3-1.js
     24     ECMA Section:       15.9.5.3-1 Date.prototype.valueOf
     25     Description:
     26 
     27     The valueOf function returns a number, which is this time value.
     28 
     29     The valueOf function is not generic; it generates a runtime error if
     30     its this value is not a Date object.  Therefore it cannot be transferred
     31     to other kinds of objects for use as a method.
     32 
     33     Author:             christine (at) netscape.com
     34     Date:               12 november 1997
     35 */
     36 
     37     var SECTION = "15.9.5.3-1-n";
     38     var VERSION = "ECMA_1";
     39     startTest();
     40     var TITLE   = "Date.prototype.valueOf";
     41 
     42     writeHeaderToLog( SECTION + " "+ TITLE);
     43 
     44     var testcases = new Array();
     45 
     46     var OBJ = new MyObject( new Date(0) );
     47 
     48     testcases[tc++] = new TestCase( SECTION,
     49                                     "var OBJ = new MyObject( new Date(0) ); OBJ.valueOf()",
     50                                     "error",
     51                                     OBJ.valueOf() );
     52     test();
     53 
     54 function MyObject( value ) {
     55     this.value = value;
     56     this.valueOf = Date.prototype.valueOf;
     57 //  The following line causes an infinte loop
     58 //    this.toString = new Function( "return this+\"\";");
     59     return this;
     60 }
     61 function test() {
     62     for ( tc=0; tc < testcases.length; tc++ ) {
     63         testcases[tc].passed = writeTestCaseResult(
     64                             testcases[tc].expect,
     65                             testcases[tc].actual,
     66                             testcases[tc].description +" = "+
     67                             testcases[tc].actual );
     68 
     69         testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
     70     }
     71     stopTest();
     72     return ( testcases );
     73 }
     74