gecko-dev/js/tests/ecma_2/Statements/try-007.js

/**
 *  File Name:          try-007.js
 *  ECMA Section:
 *  Description:        The try statement
 *
 *  This test has a for-in statement within a try block.
 *
 *
 *  Author:             christine@netscape.com
 *  Date:               11 August 1998
 */
    var SECTION = "try-007";
    var VERSION = "ECMA_2";
    var TITLE   = "The try statement:  for-in";

    startTest();
    writeHeaderToLog( SECTION + " "+ TITLE);

    var tc = 0;
    var testcases = new Array();

    /**
     *  This is the "check" function for test objects that will
     *  throw an exception.
     */
    function throwException() {
        throw EXCEPTION_STRING +": " + this.valueOf();
    }
    var EXCEPTION_STRING = "Exception thrown:";

    /**
     *  This is the "check" function for test objects that do not
     *  throw an exception
     */
    function noException() {
        return this.valueOf();
    }

    /**
     *  Add test cases here
     */
    TryForIn( new TryObject( "hello", throwException, true ));
    TryForIn( new TryObject( "hola",  noException, false ));

    /**
     *  Run the test.
     */

    test();

/**
 *  This is the object that will be the "this" in a with block.
 *  The check function is either throwExeption() or noException().
 *  See above.
 *
 */
function TryObject( value, fun, exception ) {
    this.value = value;
    this.exception = exception;

    this.check = fun;
    this.valueOf = function () { return this.value; }
}

/**
 *  This function has a for-in statement within a try block.  Test cases
 *  are added after the try-catch-finally statement.  Within the for-in
 *  block, call a function that can throw an exception.  Verify that any
 *  exceptions are properly caught.
 */

 function TryForIn( object ) {
    try {
        for ( p in object ) {
            if ( typeof object[p] == "function" ) {
                result = object[p]();
            }
        }
    } catch ( e ) {
        result = e;
    }

    testcases[tc++] = new TestCase(
        SECTION,
        "TryForIn( " + object+ " )",
        (object.exception ? EXCEPTION_STRING +": " + object.value : object.value),
        result );

 }