tests/mozilla/ecma_3/Function/regress-94506.js

   1 /*
   2 * The contents of this file are subject to the Netscape Public
   3 * License Version 1.1 (the "License"); you may not use this file
   4 * except in compliance with the License. You may obtain a copy of
   5 * the License at http://www.mozilla.org/NPL/
   6 *
   7 * Software distributed under the License is distributed on an "AS
   8 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   9 * implied. See the License for the specific language governing
  10 * rights and limitations under the License.
  11 *
  12 * The Original Code is mozilla.org code.
  13 *
  14 * The Initial Developer of the Original Code is Netscape
  15 * Communications Corporation.  Portions created by Netscape are
  16 * Copyright (C) 1998 Netscape Communications Corporation. All
  17 * Rights Reserved.
  18 *
  19 * Contributor(s): deneen@alum.bucknell.edu, shaver@mozilla.org
  20 * Date: 08 August 2001
  21 *
  22 * SUMMARY: When we invoke a function, the arguments object should take
  23 *          a back seat to any local identifier named "arguments".
  24 *
  25 * See http://bugzilla.mozilla.org/show_bug.cgi?id=94506
  26 */
  27 //-----------------------------------------------------------------------------
  28 var UBound = 0;
  29 var bug = 94506;
  30 var summary = 'Testing functions employing identifiers named "arguments"';
  31 var status = '';
  32 var statusitems = [];
  33 var actual = '';
  34 var actualvalues = [];
  35 var expect= '';
  36 var expectedvalues = [];
  37 var TYPE_OBJECT = typeof new Object();
  38 var arguments = 5555;
  39
  40
  41 // use a parameter named "arguments"
  42 function F1(arguments)
  43 {
  44   return arguments;
  45 }
  46
  47
  48 // use a local variable named "arguments"
  49 function F2()
  50 {
  51   var arguments = 55;
  52   return arguments;
  53 }
  54
  55
  56 // same thing in a different order. CHANGES THE RESULT!
  57 function F3()
  58 {
  59   return arguments;
  60   var arguments = 555;
  61 }
  62
  63
  64 // use the global variable above named "arguments"
  65 function F4()
  66 {
  67   return arguments;
  68 }
  69
  70
  71
  72 /*
  73  * In Sections 1 and 2, expect the local identifier, not the arguments object.
  74  * In Sections 3 and 4, expect the arguments object, not the the identifier.
  75  */
  76
  77 status = 'Section 1 of test';
  78 actual = F1(5);
  79 expect = 5;
  80 addThis();
  81
  82
  83 status = 'Section 2 of test';
  84 actual = F2();
  85 expect = 55;
  86 addThis();
  87
  88
  89 status = 'Section 3 of test';
  90 actual = typeof F3();
  91 expect = TYPE_OBJECT;
  92 addThis();
  93
  94
  95 status = 'Section 4 of test';
  96 actual = typeof F4();
  97 expect = TYPE_OBJECT;
  98 addThis();
  99
 100
 101 // Let's try calling F1 without providing a parameter -
 102 status = 'Section 5 of test';
 103 actual = F1();
 104 expect = undefined;
 105 addThis();
 106
 107
 108 // Let's try calling F1 with too many parameters -
 109 status = 'Section 6 of test';
 110 actual = F1(3,33,333);
 111 expect = 3;
 112 addThis();
 113
 114
 115
 116 //-----------------------------------------------------------------------------
 117 test();
 118 //-----------------------------------------------------------------------------
 119
 120
 121 function addThis()
 122 {
 123   statusitems[UBound] = status;
 124   actualvalues[UBound] = actual;
 125   expectedvalues[UBound] = expect;
 126   UBound++;
 127 }
 128
 129
 130 function test()
 131 {
 132   enterFunc ('test');
 133   printBugNumber (bug);
 134   printStatus (summary);
 135
 136   for (var i = 0; i < UBound; i++)
 137   {
 138     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
 139   }
 140
 141   exitFunc ('test');
 142 }