michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0:  *
michael@0:  * Date:    16 Dec 2002
michael@0:  * SUMMARY: Testing |with (x) {function f() {}}| when |x.f| already exists
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=185485
michael@0:  *
michael@0:  * The idea is this: if |x| does not already have a property named |f|,
michael@0:  * a |with| statement cannot be used to define one. See, for example,
michael@0:  *
michael@0:  *       http://bugzilla.mozilla.org/show_bug.cgi?id=159849#c11
michael@0:  *       http://bugzilla.mozilla.org/show_bug.cgi?id=184107
michael@0:  *
michael@0:  *
michael@0:  * However, if |x| already has a property |f|, a |with| statement can be
michael@0:  * used to modify the value it contains:
michael@0:  *
michael@0:  *                 with (x) {f = 1;}
michael@0:  *
michael@0:  * This should work even if we use a |var| statement, like this:
michael@0:  *
michael@0:  *                 with (x) {var f = 1;}
michael@0:  *
michael@0:  * However, it should NOT work if we use a |function| statement, like this:
michael@0:  *
michael@0:  *                 with (x) {function f() {}}
michael@0:  *
michael@0:  * Instead, this should newly define a function f in global scope.
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=185485
michael@0:  *
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: var UBound = 0;
michael@0: var BUGNUMBER = 185485;
michael@0: var summary = 'Testing |with (x) {function f() {}}| when |x.f| already exists';
michael@0: var status = '';
michael@0: var statusitems = [];
michael@0: var actual = '';
michael@0: var actualvalues = [];
michael@0: var expect= '';
michael@0: var expectedvalues = [];
michael@0: 
michael@0: var x = { f:0, g:0 };
michael@0: 
michael@0: with (x)
michael@0: {
michael@0:   f = 1;
michael@0: }
michael@0: status = inSection(1);
michael@0: actual = x.f;
michael@0: expect = 1;
michael@0: addThis();
michael@0: 
michael@0: with (x)
michael@0: {
michael@0:   var f = 2;
michael@0: }
michael@0: status = inSection(2);
michael@0: actual = x.f;
michael@0: expect = 2;
michael@0: addThis();
michael@0: 
michael@0: /*
michael@0:  * Use of a function statement under the with-block should not affect
michael@0:  * the local property |f|, but define a function |f| in global scope -
michael@0:  */
michael@0: with (x)
michael@0: {
michael@0:   function f() {}
michael@0: }
michael@0: status = inSection(3);
michael@0: actual = x.f;
michael@0: expect = 2;
michael@0: addThis();
michael@0: 
michael@0: status = inSection(4);
michael@0: actual = typeof this.f;
michael@0: expect = 'function';
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * Compare use of function expression instead of function statement.
michael@0:  * Note it is important that |x.g| already exists. Otherwise, this
michael@0:  * would newly define |g| in global scope -
michael@0:  */
michael@0: with (x)
michael@0: {
michael@0:   var g = function() {}
michael@0: }
michael@0: status = inSection(5);
michael@0: actual = x.g.toString();
michael@0: expect = (function () {}).toString();
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: test();
michael@0: //-----------------------------------------------------------------------------
michael@0: 
michael@0: 
michael@0: 
michael@0: function addThis()
michael@0: {
michael@0:   statusitems[UBound] = status;
michael@0:   actualvalues[UBound] = actual;
michael@0:   expectedvalues[UBound] = expect;
michael@0:   UBound++;
michael@0: }
michael@0: 
michael@0: 
michael@0: function test()
michael@0: {
michael@0:   enterFunc('test');
michael@0:   printBugNumber(BUGNUMBER);
michael@0:   printStatus(summary);
michael@0: 
michael@0:   for (var i=0; i<UBound; i++)
michael@0:   {
michael@0:     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
michael@0:   }
michael@0: 
michael@0:   exitFunc ('test');
michael@0: }