tests/mozilla/ecma_2/Exceptions/boolean-002.js

   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@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