1 /** 2 File Name: boolean-001.js 3 Description: Corresponds to ecma/Boolean/15.6.4.3-4-n.js 4 5 15.6.4.3 Boolean.prototype.valueOf() 6 Returns this boolean value. 7 8 The valueOf function is not generic; it generates 9 a runtime error if its this value is not a Boolean 10 object. Therefore it cannot be transferred to other 11 kinds of objects for use as a method. 12 13 Author: christine (at) netscape.com 14 Date: 09 september 1998 15 */ 16 var SECTION = "boolean-002.js"; 17 var VERSION = "JS1_4"; 18 var TITLE = "Boolean.prototype.valueOf()"; 19 startTest(); 20 writeHeaderToLog( SECTION +" "+ TITLE ); 21 22 var tc = 0; 23 var testcases = new Array(); 24 25 var exception = "No exception thrown"; 26 var result = "Failed"; 27 28 var VALUE_OF = Boolean.prototype.valueOf; 29 30 try { 31 var s = new String("Not a Boolean"); 32 s.valueOf = VALUE_0F; 33 s.valueOf(); 34 } catch ( e ) { 35 result = "Passed!"; 36 exception = e.toString(); 37 } 38 39 testcases[tc++] = new TestCase( 40 SECTION, 41 "Assigning Boolean.prototype.valueOf to a String object "+ 42 "(threw " +exception +")", 43 "Passed!", 44 result ); 45 46 test(); 47 48
