tests/mozilla/ecma_3/RegExp/15.10.4.1-2.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): pschwartau@netscape.com
  20 * Date: 26 November 2000
  21 *
  22 *
  23 *SUMMARY: Passing a RegExp object to a RegExp() constructor.
  24 *This test arose from Bugzilla bug 61266. The ECMA3 section is:
  25 *
  26 *  15.10.4.1 new RegExp(pattern, flags)
  27 *
  28 *  If pattern is an object R whose [[Class]] property is "RegExp" and
  29 *  flags is undefined, then let P be the pattern used to construct R
  30 *  and let F be the flags used to construct R. If pattern is an object R
  31 *  whose [[Class]] property is "RegExp" and flags is not undefined,
  32 *  then throw a TypeError exception. Otherwise, let P be the empty string
  33 *  if pattern is undefined and ToString(pattern) otherwise, and let F be
  34 *  the empty string if flags is undefined and ToString(flags) otherwise.
  35 *
  36 *
  37 *The current test will check the first scenario outlined above:
  38 *
  39 *   "pattern" is itself a RegExp object R
  40 *   "flags"  is undefined
  41 *
  42 * We check that a new RegExp object obj2 defined from these parameters
  43 * is morally the same as the original RegExp object obj1. Of course, they
  44 * can't be equal as objects - so we check their enumerable properties...
  45 *
  46 * In this test, the initial RegExp object obj1 will not include a flag.  This test is
  47 * identical to test 15.10.4.1-1.js, except that here we use this syntax:
  48 *
  49 *                  obj2 = new RegExp(obj1, undefined);
  50 *
  51 * instead of:
  52 *
  53 *                  obj2 = new RegExp(obj1);
  54 */
  55 //-------------------------------------------------------------------------------------------------
  56 var bug = '61266';
  57 var summary = 'Passing a RegExp object to a RegExp() constructor';
  58 var statprefix = 'Applying RegExp() twice to pattern ';
  59 var statsuffix =  '; testing property ';
  60 var singlequote = "'";
  61 var i = -1; var s = '';
  62 var obj1 = {}; var obj2 = {};
  63 var status = ''; var actual = ''; var expect = ''; var msg = '';
  64 var patterns = new Array();
  65
  66
  67 // various regular expressions to try -
  68 patterns[0] = '';
  69 patterns[1] = 'abc';
  70 patterns[2] = '(.*)(3-1)\s\w';
  71 patterns[3] = '(.*)(...)\\s\\w';
  72 patterns[4] = '[^A-Za-z0-9_]';
  73 patterns[5] = '[^\f\n\r\t\v](123.5)([4 - 8]$)';
  74
  75
  76
  77 //-------------------------------------------------------------------------------------------------
  78 test();
  79 //-------------------------------------------------------------------------------------------------
  80
  81
  82 function test()
  83 {
  84   enterFunc ('test');
  85   printBugNumber (bug);
  86   printStatus (summary);
  87
  88   for (i in patterns)
  89   {
  90     s = patterns[i];
  91     status =getStatus(s);
  92     obj1 = new RegExp(s);
  93     obj2 = new RegExp(obj1, undefined);  // see introduction to bug
  94
  95     for (prop in obj2)
  96     {
  97       msg  = status +  quote(prop);
  98       actual = obj2[prop];
  99       expect = obj1[prop];
 100       reportCompare (expect, actual, msg);
 101     }
 102   }
 103
 104   exitFunc ('test');
 105 }
 106
 107
 108 function getStatus(regexp)
 109 {
 110   return (statprefix  +  quote(regexp) +  statsuffix);
 111 }
 112
 113
 114 function quote(text)
 115 {
 116   return (singlequote  +  text  + singlequote);
 117 }