1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/tests/ecma_3/Function/arguments-001.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,135 @@
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 + * Date: 07 May 2001
1.11 + *
1.12 + * SUMMARY: Testing the arguments object
1.13 + *
1.14 + * See http://bugzilla.mozilla.org/show_bug.cgi?id=72884
1.15 + */
1.16 +//-----------------------------------------------------------------------------
1.17 +var UBound = 0;
1.18 +var BUGNUMBER = 72884;
1.19 +var summary = 'Testing the arguments object';
1.20 +var status = '';
1.21 +var statusitems = [ ];
1.22 +var actual = '';
1.23 +var actualvalues = [ ];
1.24 +var expect= '';
1.25 +var expectedvalues = [ ];
1.26 +var a = '';
1.27 +
1.28 +
1.29 +status = inSection(1);
1.30 +function f()
1.31 +{
1.32 + delete arguments.length;
1.33 + return arguments;
1.34 +}
1.35 +
1.36 +a = f();
1.37 +actual = a instanceof Object;
1.38 +expect = true;
1.39 +addThis();
1.40 +
1.41 +actual = a instanceof Array;
1.42 +expect = false;
1.43 +addThis();
1.44 +
1.45 +actual = a.length;
1.46 +expect = undefined;
1.47 +addThis();
1.48 +
1.49 +
1.50 +
1.51 +status = inSection(2);
1.52 +a = f(1,2,3);
1.53 +actual = a instanceof Object;
1.54 +expect = true;
1.55 +addThis();
1.56 +
1.57 +actual = a instanceof Array;
1.58 +expect = false;
1.59 +addThis();
1.60 +
1.61 +actual = a.length;
1.62 +expect = undefined;
1.63 +addThis();
1.64 +
1.65 +actual = a[0];
1.66 +expect = 1;
1.67 +addThis();
1.68 +
1.69 +actual = a[1];
1.70 +expect = 2;
1.71 +addThis();
1.72 +
1.73 +actual = a[2];
1.74 +expect = 3;
1.75 +addThis();
1.76 +
1.77 +
1.78 +
1.79 +status = inSection(3);
1.80 +/*
1.81 + * Brendan:
1.82 + *
1.83 + * Note that only callee and length can be overridden, so deleting an indexed
1.84 + * property and asking for it again causes it to be recreated by args_resolve:
1.85 + *
1.86 + * function g(){delete arguments[0]; return arguments[0]}
1.87 + * g(42) // should this print 42?
1.88 + *
1.89 + * I'm not positive this violates ECMA, which allows in chapter 16 for extensions
1.90 + * including properties (does it allow for magically reappearing properties?). The
1.91 + * delete operator successfully deletes arguments[0] and results in true, but that
1.92 + * is not distinguishable from the case where arguments[0] was delegated to
1.93 + * Arguments.prototype[0], which was how the bad old code worked.
1.94 + *
1.95 + * I'll ponder this last detail...
1.96 + *
1.97 + * UPDATE: Per ECMA-262, delete on an arguments[i] should succeed
1.98 + * and remove that property from the arguments object, leaving any get
1.99 + * of it after the delete to evaluate to undefined.
1.100 + */
1.101 +function g()
1.102 +{
1.103 + delete arguments[0];
1.104 + return arguments[0];
1.105 +}
1.106 +actual = g(42);
1.107 +expect = undefined; // not 42...
1.108 +addThis();
1.109 +
1.110 +
1.111 +
1.112 +//-------------------------------------------------------------------------------------------------
1.113 +test();
1.114 +//-------------------------------------------------------------------------------------------------
1.115 +
1.116 +
1.117 +function addThis()
1.118 +{
1.119 + statusitems[UBound] = status;
1.120 + actualvalues[UBound] = actual;
1.121 + expectedvalues[UBound] = expect;
1.122 + UBound++;
1.123 +}
1.124 +
1.125 +
1.126 +function test()
1.127 +{
1.128 + enterFunc ('test');
1.129 + printBugNumber(BUGNUMBER);
1.130 + printStatus (summary);
1.131 +
1.132 + for (var i = 0; i < UBound; i++)
1.133 + {
1.134 + reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
1.135 + }
1.136 +
1.137 + exitFunc ('test');
1.138 +}
