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:    22 Jan 2002
michael@0:  * SUMMARY: Testing Error.prototype.toString()
michael@0:  *
michael@0:  * Revised: 25 Nov 2002
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=181909
michael@0:  *
michael@0:  * Note that ECMA-262 3rd Edition Final, Section 15.11.4.4 states that
michael@0:  * Error.prototype.toString() returns an implementation-dependent string.
michael@0:  * Therefore any testcase on this property is somewhat arbitrary.
michael@0:  *
michael@0:  * However, d-russo@ti.com pointed out that Rhino was returning this:
michael@0:  *
michael@0:  *               js> err = new Error()
michael@0:  *               undefined: undefined
michael@0:  *
michael@0:  *               js> err = new Error("msg")
michael@0:  *               undefined: msg
michael@0:  *
michael@0:  *
michael@0:  * We expect Rhino to return what SpiderMonkey currently does:
michael@0:  *
michael@0:  *               js> err = new Error()
michael@0:  *               Error
michael@0:  *
michael@0:  *               js> err = new Error("msg")
michael@0:  *               Error: msg
michael@0:  *
michael@0:  *
michael@0:  * i.e. we expect err.toString() === err.name if err.message is not defined;
michael@0:  * otherwise, we expect err.toString() === err.name + ': ' + err.message.
michael@0:  *
michael@0:  * See also ECMA 15.11.4.2, 15.11.4.3
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: var UBound = 0;
michael@0: var BUGNUMBER = '(none)';
michael@0: var summary = 'Testing Error.prototype.toString()';
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 EMPTY_STRING = '';
michael@0: var EXPECTED_FORMAT = 0;
michael@0: 
michael@0: 
michael@0: status = inSection(1);
michael@0: var err1 = new Error('msg1');
michael@0: actual = examineThis(err1, 'msg1');
michael@0: expect = EXPECTED_FORMAT;
michael@0: addThis();
michael@0: 
michael@0: status = inSection(2);
michael@0: var err2 = new Error(err1);
michael@0: actual = examineThis(err2, err1);
michael@0: expect = EXPECTED_FORMAT;
michael@0: addThis();
michael@0: 
michael@0: status = inSection(3);
michael@0: var err3 = new Error();
michael@0: actual = examineThis(err3, EMPTY_STRING);
michael@0: expect = EXPECTED_FORMAT;
michael@0: addThis();
michael@0: 
michael@0: status = inSection(4);
michael@0: var err4 = new Error(EMPTY_STRING);
michael@0: actual = examineThis(err4, EMPTY_STRING);
michael@0: expect = EXPECTED_FORMAT;
michael@0: addThis();
michael@0: 
michael@0: // now generate a run-time error -
michael@0: status = inSection(5);
michael@0: try
michael@0: {
michael@0:   eval('1=2');
michael@0: }
michael@0: catch(err5)
michael@0: {
michael@0:   actual = examineThis(err5, '.*');
michael@0: }
michael@0: expect = EXPECTED_FORMAT;
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: test();
michael@0: //-----------------------------------------------------------------------------
michael@0: 
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * Searches err.toString() for err.name + ':' + err.message,
michael@0:  * with possible whitespace on each side of the colon sign.
michael@0:  *
michael@0:  * We allow for no colon in case err.message was not provided by the user.
michael@0:  * In such a case, SpiderMonkey and Rhino currently set err.message = '',
michael@0:  * as allowed for by ECMA 15.11.4.3. This makes |pattern| work in this case.
michael@0:  *
michael@0:  * If this is ever changed to a non-empty string, e.g. 'undefined',
michael@0:  * you may have to modify |pattern| to take that into account -
michael@0:  *
michael@0:  */
michael@0: function examineThis(err, msg)
michael@0: {
michael@0:   var pattern = err.name + '\\s*:?\\s*' + msg;
michael@0:   return err.toString().search(RegExp(pattern));
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: }