tests/mozilla/ecma_2/Statements/try-009.js

   1 /**
   2  *  File Name:          try-009.js
   3  *  ECMA Section:
   4  *  Description:        The try statement
   5  *
   6  *  This test has a try block within a while block.  Verify that an exception
   7  *  breaks out of the while.  I don't really know why this is an interesting
   8  *  test case but Mike Shaver had two of these so what the hey.
   9  *
  10  *  Author:             christine@netscape.com
  11  *  Date:               11 August 1998
  12  */
  13     var SECTION = "try-009";
  14     var VERSION = "ECMA_2";
  15     var TITLE   = "The try statement: try in a while block";
  16
  17     startTest();
  18     writeHeaderToLog( SECTION + " "+ TITLE);
  19
  20     var tc = 0;
  21     var testcases = new Array();
  22
  23     var EXCEPTION_STRING = "Exception thrown: ";
  24     var NO_EXCEPTION_STRING = "No exception thrown: ";
  25
  26
  27     TryInWhile( new TryObject( "hello", ThrowException, true ) );
  28     TryInWhile( new TryObject( "aloha", NoException, false ));
  29
  30     test();
  31
  32     function TryObject( value, throwFunction, result ) {
  33         this.value = value;
  34         this.thrower = throwFunction;
  35         this.result = result;
  36     }
  37     function ThrowException() {
  38         throw EXCEPTION_STRING + this.value;
  39     }
  40     function NoException() {
  41         return NO_EXCEPTION_STRING + this.value;
  42     }
  43     function TryInWhile( object ) {
  44         result = null;
  45         while ( true ) {
  46             try {
  47                 object.thrower();
  48                 result = NO_EXCEPTION_STRING + object.value;
  49                 break;
  50             } catch ( e ) {
  51                 result = e;
  52                 break;
  53             }
  54         }
  55
  56         testcases[tc++] = new TestCase(
  57             SECTION,
  58             "( "+ object  +".thrower() )",
  59             (object.result
  60             ? EXCEPTION_STRING + object.value :
  61             NO_EXCEPTION_STRING + object.value),
  62             result );
  63     }