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Initial add. Regression test for bug 103602.
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js/tests/js1_5/Regress/regress-103602.js
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js/tests/js1_5/Regress/regress-103602.js
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is JavaScript Engine testing utilities.
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*
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* The Initial Developer of the Original Code is Netscape Communications Corp.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s): pschwartau@netscape.com
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK *****
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*
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*
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* Date: 10 Jan 2002
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* SUMMARY: Assignment to a const is NOT an error per ECMA
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* See http://bugzilla.mozilla.org/show_bug.cgi?id=103602
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*
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* ------- Additional Comment #4 From Brendan Eich 2002-01-10 15:30 -------
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*
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* That's per ECMA (don't blame me, I fought for what Netscape always did:
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* throw an error [could be a catchable exception since 1.3]).
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* Readonly properties, when set by assignment, are not changed, but no error
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* or exception is thrown. The value of the assignment expression is the value
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* of the r.h.s.
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*
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* If you want a *strict* warning, pls change the summary of this bug to say so.
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*/
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//-----------------------------------------------------------------------------
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var UBound = 0;
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var bug = 103602;
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var summary = 'Assignment to a const is NOT an error per ECMA'
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var status = '';
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var statusitems = [];
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var actual = '';
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var actualvalues = [];
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var expect= '';
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var expectedvalues = [];
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var cnFAIL_1 = 'Redeclaration of a const FAILED to cause an error';
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var cnFAIL_2 = 'Reassigning to a const caused an ERROR! It should not!!!';
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var sEval = '';
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/*
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* Not every implementation supports const (a non-ECMA extension)
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* For example, Rhino does not; it would generate a complile-time error.
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* So we have to hide this so it will be detected at run-time instead.
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*/
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try
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{
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sEval = 'const one = 1';
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eval(sEval);
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}
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catch(e)
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{
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quit(); // if const is not supported, this testcase is over -
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}
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status = inSection(1);
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try
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{
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/*
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* Redeclaration of const should be a compile-time error.
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* Hide so it will be detected at run-time.
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*/
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sEval = 'const one = 2;';
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eval(sEval);
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expect = ''; // we shouldn't reach this line
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actual = cnFAIL_1;
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addThis();
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}
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catch(e)
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{
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// good - we should be here.
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actual = expect;
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addThis();
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}
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status = inSection(2);
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try
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{
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/*
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* Reassignment to a const should be NOT be an error, per ECMA.
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*/
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one = 2;
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actual = expect; // good: no error was generated
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addThis();
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// although no error, the assignment should have been ignored -
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status = inSection(3);
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actual = one;
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expect = 1;
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addThis();
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// the value of the EXPRESSION, however, is the value of the r.h.s. -
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status = inSection(4);
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actual = (one = 2);
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expect = 2;
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addThis();
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}
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catch(e)
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{
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// BAD - we shouldn't be here
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expect = '';
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actual = cnFAIL_2;
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addThis();
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}
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//-----------------------------------------------------------------------------
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test();
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//-----------------------------------------------------------------------------
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function addThis()
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{
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statusitems[UBound] = status;
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actualvalues[UBound] = actual;
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expectedvalues[UBound] = expect;
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UBound++;
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}
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function test()
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{
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enterFunc ('test');
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printBugNumber (bug);
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printStatus (summary);
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for (var i = 0; i < UBound; i++)
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{
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reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
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}
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exitFunc ('test');
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}
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