1 /* ***** BEGIN LICENSE BLOCK *****
2 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
4 * The contents of this file are subject to the Netscape Public License
5 * Version 1.1 (the "License"); you may not use this file except in
6 * compliance with the License. You may obtain a copy of the License at
7 * http://www.mozilla.org/NPL/
9 * Software distributed under the License is distributed on an "AS IS" basis,
10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11 * for the specific language governing rights and limitations under the
14 * The Original Code is JavaScript Engine testing utilities.
16 * The Initial Developer of the Original Code is Netscape Communications Corp.
17 * Portions created by the Initial Developer are Copyright (C) 2003
18 * the Initial Developer. All Rights Reserved.
20 * Contributor(s): igor@icesoft.no, pschwartau@netscape.com
22 * Alternatively, the contents of this file may be used under the terms of
23 * either the GNU General Public License Version 2 or later (the "GPL"), or
24 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
25 * in which case the provisions of the GPL or the LGPL are applicable instead
26 * of those above. If you wish to allow use of your version of this file only
27 * under the terms of either the GPL or the LGPL, and not to allow others to
28 * use your version of this file under the terms of the NPL, indicate your
29 * decision by deleting the provisions above and replace them with the notice
30 * and other provisions required by the GPL or the LGPL. If you do not delete
31 * the provisions above, a recipient may use your version of this file under
32 * the terms of any one of the NPL, the GPL or the LGPL.
34 * ***** END LICENSE BLOCK *****
37 * Date: 06 February 2003
38 * SUMMARY: Using |instanceof| to check if function is called as a constructor
40 * See http://bugzilla.mozilla.org/show_bug.cgi?id=192105
43 //-----------------------------------------------------------------------------
46 var summary = 'Using |instanceof| to check if f() is called as constructor';
50 var actualvalues = [];
52 var expectedvalues = [];
56 * This function is the heart of the test. It sets the result
57 * variable |actual|, which we will compare against |expect|.
59 * Note |actual| will be set to |true| or |false| according
60 * to whether or not this function is called as a constructor;
61 * i.e. whether it is called via the |new| keyword or not -
65 actual = (this instanceof f);
70 * Call f as a constructor from global scope
72 status = inSection(1);
73 new f(); // sets |actual|
78 * Now, not as a constructor
80 status = inSection(2);
87 * Call f as a constructor from function scope
93 status = inSection(3);
99 * Now, not as a constructor
105 status = inSection(4);
106 G(); // sets |actual|
112 * Now make F() and G() methods of an object
114 var obj = {F:F, G:G};
115 status = inSection(5);
116 obj.F(); // sets |actual|
120 status = inSection(6);
121 obj.G(); // sets |actual|
127 * Now call F() and G() from yet other functions, and use eval()
133 status = inSection(7);
134 A(); // sets |actual|
143 status = inSection(8);
144 B(); // sets |actual|
151 //-----------------------------------------------------------------------------
153 //-----------------------------------------------------------------------------
159 statusitems[UBound] = status;
160 actualvalues[UBound] = actual;
161 expectedvalues[UBound] = expect;
170 printStatus(summary);
172 for (var i=0; i<UBound; i++)
174 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);