tests/mozilla/ecma_2/Statements/try-007.js

   1 /**
   2  *  File Name:          try-007.js
   3  *  ECMA Section:
   4  *  Description:        The try statement
   5  *
   6  *  This test has a for-in statement within a try block.
   7  *
   8  *
   9  *  Author:             christine@netscape.com
  10  *  Date:               11 August 1998
  11  */
  12     var SECTION = "try-007";
  13     var VERSION = "ECMA_2";
  14     var TITLE   = "The try statement:  for-in";
  15
  16     startTest();
  17     writeHeaderToLog( SECTION + " "+ TITLE);
  18
  19     var tc = 0;
  20     var testcases = new Array();
  21
  22     /**
  23      *  This is the "check" function for test objects that will
  24      *  throw an exception.
  25      */
  26     function throwException() {
  27         throw EXCEPTION_STRING +": " + this.valueOf();
  28     }
  29     var EXCEPTION_STRING = "Exception thrown:";
  30
  31     /**
  32      *  This is the "check" function for test objects that do not
  33      *  throw an exception
  34      */
  35     function noException() {
  36         return this.valueOf();
  37     }
  38
  39     /**
  40      *  Add test cases here
  41      */
  42     TryForIn( new TryObject( "hello", throwException, true ));
  43     TryForIn( new TryObject( "hola",  noException, false ));
  44
  45     /**
  46      *  Run the test.
  47      */
  48
  49     test();
  50
  51 /**
  52  *  This is the object that will be the "this" in a with block.
  53  *  The check function is either throwExeption() or noException().
  54  *  See above.
  55  *
  56  */
  57 function TryObject( value, fun, exception ) {
  58     this.value = value;
  59     this.exception = exception;
  60
  61     this.check = fun;
  62     this.valueOf = function () { return this.value; }
  63 }
  64
  65 /**
  66  *  This function has a for-in statement within a try block.  Test cases
  67  *  are added after the try-catch-finally statement.  Within the for-in
  68  *  block, call a function that can throw an exception.  Verify that any
  69  *  exceptions are properly caught.
  70  */
  71
  72  function TryForIn( object ) {
  73     try {
  74         for ( p in object ) {
  75             if ( typeof object[p] == "function" ) {
  76                 result = object[p]();
  77             }
  78         }
  79     } catch ( e ) {
  80         result = e;
  81     }
  82
  83     testcases[tc++] = new TestCase(
  84         SECTION,
  85         "TryForIn( " + object+ " )",
  86         (object.exception ? EXCEPTION_STRING +": " + object.value : object.value),
  87         result );
  88
  89  }