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:    24 Jan 2002
michael@0:  * SUMMARY: "Too much recursion" errors should be safely caught by try...catch
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=121658
michael@0:  *
michael@0:  * In the cases below, we expect i>0. The bug was filed because we
michael@0:  * were getting i===0; i.e. |i| did not retain the value it had at the
michael@0:  * location of the error.
michael@0:  *
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: var UBound = 0;
michael@0: var BUGNUMBER = 121658;
michael@0: var msg = '"Too much recursion" errors should be safely caught by try...catch';
michael@0: var TEST_PASSED = 'i retained the value it had at location of error';
michael@0: var TEST_FAILED = 'i did NOT retain this value';
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: var i;
michael@0: 
michael@0: 
michael@0: function f()
michael@0: {
michael@0:   ++i;
michael@0: 
michael@0:   // try...catch should catch the "too much recursion" error to ensue
michael@0:   try
michael@0:   {
michael@0:     f();
michael@0:   }
michael@0:   catch(e)
michael@0:   {
michael@0:   }
michael@0: }
michael@0: 
michael@0: i=0;
michael@0: f();
michael@0: status = inSection(1);
michael@0: actual = (i>0);
michael@0: expect = true;
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: 
michael@0: // Now try in function scope -
michael@0: function g()
michael@0: {
michael@0:   f();
michael@0: }
michael@0: 
michael@0: i=0;
michael@0: g();
michael@0: status = inSection(2);
michael@0: actual = (i>0);
michael@0: expect = true;
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: 
michael@0: // Now try in eval scope -
michael@0: var sEval = 'function h(){++i; try{h();} catch(e){}}; i=0; h();';
michael@0: eval(sEval);
michael@0: status = inSection(3);
michael@0: actual = (i>0);
michael@0: expect = true;
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: 
michael@0: // Try in eval scope and mix functions up -
michael@0: sEval = 'function a(){++i; try{h();} catch(e){}}; i=0; a();';
michael@0: eval(sEval);
michael@0: status = inSection(4);
michael@0: actual = (i>0);
michael@0: expect = true;
michael@0: addThis();
michael@0: 
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] = formatThis(actual);
michael@0:   expectedvalues[UBound] = formatThis(expect);
michael@0:   UBound++;
michael@0: }
michael@0: 
michael@0: 
michael@0: function formatThis(bool)
michael@0: {
michael@0:   return bool? TEST_PASSED : TEST_FAILED;
michael@0: }
michael@0: 
michael@0: 
michael@0: function test()
michael@0: {
michael@0:   enterFunc('test');
michael@0:   printBugNumber(BUGNUMBER);
michael@0:   printStatus(msg);
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: }