1 /** 2 File Name: date-003.js 3 Corresponds To 15.9.5.3-1.js 4 ECMA Section: 15.9.5.3-1 Date.prototype.valueOf 5 Description: 6 7 The valueOf function returns a number, which is this time value. 8 9 The valueOf function is not generic; it generates a runtime error if 10 its this value is not a Date object. Therefore it cannot be transferred 11 to other kinds of objects for use as a method. 12 13 Author: christine (at) netscape.com 14 Date: 12 november 1997 15 */ 16 var SECTION = "date-003"; 17 var VERSION = "JS1_4"; 18 var TITLE = "Date.prototype.valueOf"; 19 20 startTest(); 21 writeHeaderToLog( SECTION + " "+ TITLE); 22 23 var tc = 0; 24 var testcases = new Array(); 25 26 var result = "Failed"; 27 var exception = "No exception thrown"; 28 var expect = "Passed"; 29 30 try { 31 var OBJ = new MyObject( new Date(0) ); 32 result = OBJ.valueOf(); 33 } catch ( e ) { 34 result = expect; 35 exception = e.toString(); 36 } 37 38 testcases[tc++] = new TestCase( 39 SECTION, 40 "OBJ = new MyObject( new Date(0)); OBJ.valueOf()" + 41 " (threw " + exception +")", 42 expect, 43 result ); 44 45 test(); 46 47 function MyObject( value ) { 48 this.value = value; 49 this.valueOf = Date.prototype.valueOf; 50 // The following line causes an infinte loop 51 // this.toString = new Function( "return this+\"\";"); 52 return this; 53 } 54
