1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/tests/js1_5/Regress/regress-103602.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,134 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/*
1.10 + *
1.11 + * Date: 10 Jan 2002
1.12 + * SUMMARY: Reassignment to a const is NOT an error per ECMA
1.13 + * See http://bugzilla.mozilla.org/show_bug.cgi?id=103602
1.14 + *
1.15 + * ------- Additional Comment #4 From Brendan Eich 2002-01-10 15:30 -------
1.16 + *
1.17 + * That's per ECMA (don't blame me, I fought for what Netscape always did:
1.18 + * throw an error [could be a catchable exception since 1.3]).
1.19 + * Readonly properties, when set by assignment, are not changed, but no error
1.20 + * or exception is thrown. The value of the assignment expression is the value
1.21 + * of the r.h.s.
1.22 + *
1.23 + * If you want a *strict* warning, pls change the summary of this bug
1.24 + * to say so.
1.25 + */
1.26 +//-----------------------------------------------------------------------------
1.27 +var UBound = 0;
1.28 +var BUGNUMBER = 103602;
1.29 +var summary = 'Reassignment to a const is NOT an error per ECMA';
1.30 +var status = '';
1.31 +var statusitems = [];
1.32 +var actual = '';
1.33 +var actualvalues = [];
1.34 +var expect= '';
1.35 +var expectedvalues = [];
1.36 +var cnFAIL_1 = 'Redeclaration of a const FAILED to cause an error';
1.37 +var cnFAIL_2 = 'Reassigning to a const caused an ERROR! It should not!!!';
1.38 +var sEval = '';
1.39 +
1.40 +/*
1.41 + * Not every implementation supports const (a non-ECMA extension)
1.42 + * For example, Rhino does not; it would generate a complile-time error.
1.43 + * So we have to hide this so it will be detected at run-time instead.
1.44 + */
1.45 +try
1.46 +{
1.47 + sEval = 'const one = 1';
1.48 + eval(sEval);
1.49 +}
1.50 +catch(e)
1.51 +{
1.52 + quit(); // if const is not supported, this testcase is over -
1.53 +}
1.54 +
1.55 +
1.56 +status = inSection(1);
1.57 +try
1.58 +{
1.59 + /*
1.60 + * Redeclaration of const should be a compile-time error.
1.61 + * Hide so it will be detected at run-time.
1.62 + */
1.63 + sEval = 'const one = 2;';
1.64 + eval(sEval);
1.65 +
1.66 + expect = ''; // we shouldn't reach this line
1.67 + actual = cnFAIL_1;
1.68 + addThis();
1.69 +}
1.70 +catch(e)
1.71 +{
1.72 + // good - we should be here.
1.73 + actual = expect;
1.74 + addThis();
1.75 +}
1.76 +
1.77 +
1.78 +status = inSection(2);
1.79 +try
1.80 +{
1.81 + /*
1.82 + * Reassignment to a const should be NOT be an error, per ECMA.
1.83 + */
1.84 + one = 2;
1.85 + actual = expect; // good: no error was generated
1.86 + addThis();
1.87 +
1.88 + // although no error, the assignment should have been ignored -
1.89 + status = inSection(3);
1.90 + actual = one;
1.91 + expect = 1;
1.92 + addThis();
1.93 +
1.94 + // the value of the EXPRESSION, however, is the value of the r.h.s. -
1.95 + status = inSection(4);
1.96 + actual = (one = 2);
1.97 + expect = 2;
1.98 + addThis();
1.99 +}
1.100 +
1.101 +catch(e)
1.102 +{
1.103 + // BAD - we shouldn't be here
1.104 + expect = '';
1.105 + actual = cnFAIL_2;
1.106 + addThis();
1.107 +}
1.108 +
1.109 +
1.110 +
1.111 +//-----------------------------------------------------------------------------
1.112 +test();
1.113 +//-----------------------------------------------------------------------------
1.114 +
1.115 +
1.116 +function addThis()
1.117 +{
1.118 + statusitems[UBound] = status;
1.119 + actualvalues[UBound] = actual;
1.120 + expectedvalues[UBound] = expect;
1.121 + UBound++;
1.122 +}
1.123 +
1.124 +
1.125 +function test()
1.126 +{
1.127 + enterFunc ('test');
1.128 + printBugNumber(BUGNUMBER);
1.129 + printStatus (summary);
1.130 +
1.131 + for (var i = 0; i < UBound; i++)
1.132 + {
1.133 + reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
1.134 + }
1.135 +
1.136 + exitFunc ('test');
1.137 +}
