1 /** 2 File Name: number-003.js 3 Corresponds To: 15.7.4.3-3.js 4 ECMA Section: 15.7.4.3.1 Number.prototype.valueOf() 5 Description: 6 Returns this number value. 7 8 The valueOf function is not generic; it generates a runtime error if its 9 this value is not a Number object. Therefore it cannot be transferred to 10 other kinds of objects for use as a method. 11 12 Author: christine (at) netscape.com 13 Date: 16 september 1997 14 */ 15 var SECTION = "number-003"; 16 var VERSION = "JS1_4"; 17 var TITLE = "Exceptions for Number.valueOf()"; 18 19 var tc = 0; 20 var testcases = new Array(); 21 22 startTest(); 23 writeHeaderToLog( SECTION + " Number.prototype.valueOf()"); 24 25 var result = "Failed"; 26 var exception = "No exception thrown"; 27 var expect = "Passed"; 28 29 try { 30 VALUE_OF = Number.prototype.valueOf; 31 OBJECT = new String("Infinity"); 32 OBJECT.valueOf = VALUE_OF; 33 result = OBJECT.valueOf(); 34 } catch ( e ) { 35 result = expect; 36 exception = e.toString(); 37 } 38 39 testcases[tc++] = new TestCase( 40 SECTION, 41 "Assigning Number.prototype.valueOf as the valueOf of a String object " + 42 " (threw " + exception +")", 43 expect, 44 result ); 45 46 test(); 47 48
