util/AbstractList/FailFastIterator.java

/*
 * Copyright 1999 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

/**
 * @test
 * @bug 4189896
 * @summary AbstractList iterators previously checked for co-modificatin
 *          *after* the set/add/remove operations were performed.
 */

import java.util.*;

public class FailFastIterator {
    public static void main(String[] args) throws Exception {
        List orig = new ArrayList(100);
        for (int i=0; i<100; i++)
            orig.add(new Integer(i));

        List copy = new ArrayList(orig);
        try {
            ListIterator i = copy.listIterator();
            i.next();
            copy.remove(99);
            copy.add(new Integer(99));
            i.remove();
            throw new Exception("remove: iterator didn't fail fast");
        } catch (ConcurrentModificationException e) {
        }
        if (!copy.equals(orig))
            throw new Exception("remove: iterator didn't fail fast enough");

        try {
            ListIterator i = copy.listIterator();
            i.next();
            copy.remove(99);
            copy.add(new Integer(99));
            i.set(new Integer(666));
            throw new Exception("set: iterator didn't fail fast");
        } catch (ConcurrentModificationException e) {
        }
        if (!copy.equals(orig))
            throw new Exception("set: iterator didn't fail fast enough");

        try {
            ListIterator i = copy.listIterator();
            copy.remove(99);
            copy.add(new Integer(99));
            i.add(new Integer(666));
            throw new Exception("add: iterator didn't fail fast");
        } catch (ConcurrentModificationException e) {
        }
        if (!copy.equals(orig))
            throw new Exception("add: iterator didn't fail fast enough");
    }
}
Revision:	1.2
Committed:	Wed Sep 1 20:12:39 2010 UTC (13 years, 9 months ago) by jsr166
Branch:	MAIN
Changes since 1.1:	+3 -3 lines
Log Message:	coding style
#	User	Rev	Content
1	jsr166	1.1	/*
2			* Copyright 1999 Sun Microsystems, Inc. All Rights Reserved.
3			* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4			*
5			* This code is free software; you can redistribute it and/or modify it
6			* under the terms of the GNU General Public License version 2 only, as
7			* published by the Free Software Foundation.
8			*
9			* This code is distributed in the hope that it will be useful, but WITHOUT
10			* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11			* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12			* version 2 for more details (a copy is included in the LICENSE file that
13			* accompanied this code).
14			*
15			* You should have received a copy of the GNU General Public License version
16			* 2 along with this work; if not, write to the Free Software Foundation,
17			* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18			*
19			* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20			* CA 95054 USA or visit www.sun.com if you need additional information or
21			* have any questions.
22			*/
23
24			/**
25			* @test
26			* @bug 4189896
27			* @summary AbstractList iterators previously checked for co-modificatin
28			* after the set/add/remove operations were performed.
29			*/
30
31			import java.util.*;
32
33			public class FailFastIterator {
34			public static void main(String[] args) throws Exception {
35			List orig = new ArrayList(100);
36			for (int i=0; i<100; i++)
37			orig.add(new Integer(i));
38
39			List copy = new ArrayList(orig);
40			try {
41			ListIterator i = copy.listIterator();
42			i.next();
43			copy.remove(99);
44			copy.add(new Integer(99));
45			i.remove();
46			throw new Exception("remove: iterator didn't fail fast");
47	jsr166	1.2	} catch (ConcurrentModificationException e) {
48	jsr166	1.1	}
49			if (!copy.equals(orig))
50			throw new Exception("remove: iterator didn't fail fast enough");
51
52			try {
53			ListIterator i = copy.listIterator();
54			i.next();
55			copy.remove(99);
56			copy.add(new Integer(99));
57			i.set(new Integer(666));
58			throw new Exception("set: iterator didn't fail fast");
59	jsr166	1.2	} catch (ConcurrentModificationException e) {
60	jsr166	1.1	}
61			if (!copy.equals(orig))
62			throw new Exception("set: iterator didn't fail fast enough");
63
64			try {
65			ListIterator i = copy.listIterator();
66			copy.remove(99);
67			copy.add(new Integer(99));
68			i.add(new Integer(666));
69			throw new Exception("add: iterator didn't fail fast");
70	jsr166	1.2	} catch (ConcurrentModificationException e) {
71	jsr166	1.1	}
72			if (!copy.equals(orig))
73			throw new Exception("add: iterator didn't fail fast enough");
74			}
75			}