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40 * Date: 26 November 2000
43 *SUMMARY: Passing a RegExp object to a RegExp() constructor.
44 *This test arose from Bugzilla bug 61266. The ECMA3 section is:
46 * 15.10.4.1 new RegExp(pattern, flags)
48 * If pattern is an object R whose [[Class]] property is "RegExp" and
49 * flags is undefined, then let P be the pattern used to construct R
50 * and let F be the flags used to construct R. If pattern is an object R
51 * whose [[Class]] property is "RegExp" and flags is not undefined,
52 * then throw a TypeError exception. Otherwise, let P be the empty string
53 * if pattern is undefined and ToString(pattern) otherwise, and let F be
54 * the empty string if flags is undefined and ToString(flags) otherwise.
57 *The current test will check the first scenario outlined above:
59 * "pattern" is itself a RegExp object R
60 * "flags" is undefined
62 * We check that a new RegExp object obj2 defined from these parameters
63 * is morally the same as the original RegExp object obj1. Of course, they
64 * can't be equal as objects - so we check their enumerable properties...
66 * In this test, the initial RegExp object obj1 will not include a
67 * flag. This test is identical to test 15.10.4.1-1.js, except that
68 * here we use this syntax:
70 * obj2 = new RegExp(obj1, undefined);
74 * obj2 = new RegExp(obj1);
76 //-----------------------------------------------------------------------------
77 var gTestfile = '15.10.4.1-2.js';
78 var BUGNUMBER = '61266';
79 var summary = 'Passing a RegExp object to a RegExp() constructor';
80 var statprefix = 'Applying RegExp() twice to pattern ';
81 var statsuffix = '; testing property ';
82 var singlequote = "'";
83 var i = -1; var s = '';
84 var obj1 = {}; var obj2 = {};
85 var status = ''; var actual = ''; var expect = ''; var msg = '';
86 var patterns = new Array();
89 // various regular expressions to try -
92 patterns[2] = '(.*)(3-1)\s\w';
93 patterns[3] = '(.*)(...)\\s\\w';
94 patterns[4] = '[^A-Za-z0-9_]';
95 patterns[5] = '[^\f\n\r\t\v](123.5)([4 - 8]$)';
99 //-------------------------------------------------------------------------------------------------
101 //-------------------------------------------------------------------------------------------------
107 printBugNumber(BUGNUMBER);
108 printStatus (summary);
113 status =getStatus(s);
114 obj1 = new RegExp(s);
115 obj2 = new RegExp(obj1, undefined); // see introduction to bug
117 reportCompare (obj1 + '', obj2 + '', status);
124 function getStatus(regexp)
126 return (statprefix + quote(regexp) + statsuffix);
132 return (singlequote + text + singlequote);