util/AbstractList/FailFastIterator.java

/*
 * Copyright (c) 1999, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

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

import java.util.ArrayList;
import java.util.ConcurrentModificationException;
import java.util.List;
import java.util.ListIterator;

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:	1.6
Committed:	Mon Jan 8 03:12:03 2018 UTC (6 years, 4 months ago) by jsr166
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.5:	+4 -1 lines
Log Message:	organize imports
#	User	Rev	Content
1	jsr166	1.1	/*
2	jsr166	1.3	* Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved.
3	jsr166	1.1	* 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	jsr166	1.3	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20			* or visit www.oracle.com if you need additional information or have any
21			* questions.
22	jsr166	1.1	*/
23
24	jsr166	1.5	/*
25	jsr166	1.1	* @test
26			* @bug 4189896
27	jsr166	1.4	* @summary AbstractList iterators previously checked for co-modification
28	jsr166	1.1	* after the set/add/remove operations were performed.
29			*/
30
31	jsr166	1.6	import java.util.ArrayList;
32			import java.util.ConcurrentModificationException;
33			import java.util.List;
34			import java.util.ListIterator;
35	jsr166	1.1
36			public class FailFastIterator {
37			public static void main(String[] args) throws Exception {
38			List orig = new ArrayList(100);
39			for (int i=0; i<100; i++)
40			orig.add(new Integer(i));
41
42			List copy = new ArrayList(orig);
43			try {
44			ListIterator i = copy.listIterator();
45			i.next();
46			copy.remove(99);
47			copy.add(new Integer(99));
48			i.remove();
49			throw new Exception("remove: iterator didn't fail fast");
50	jsr166	1.2	} catch (ConcurrentModificationException e) {
51	jsr166	1.1	}
52			if (!copy.equals(orig))
53			throw new Exception("remove: iterator didn't fail fast enough");
54
55			try {
56			ListIterator i = copy.listIterator();
57			i.next();
58			copy.remove(99);
59			copy.add(new Integer(99));
60			i.set(new Integer(666));
61			throw new Exception("set: iterator didn't fail fast");
62	jsr166	1.2	} catch (ConcurrentModificationException e) {
63	jsr166	1.1	}
64			if (!copy.equals(orig))
65			throw new Exception("set: iterator didn't fail fast enough");
66
67			try {
68			ListIterator i = copy.listIterator();
69			copy.remove(99);
70			copy.add(new Integer(99));
71			i.add(new Integer(666));
72			throw new Exception("add: iterator didn't fail fast");
73	jsr166	1.2	} catch (ConcurrentModificationException e) {
74	jsr166	1.1	}
75			if (!copy.equals(orig))
76			throw new Exception("add: iterator didn't fail fast enough");
77			}
78			}