util/Collections/Ser.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 4190323
 * @summary EMPTY_SET, EMPTY_LIST, and the collections returned by
 *          nCopies and singleton were spec'd to be serializable, but weren't.
 */

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Collections;
import java.util.List;
import java.util.Set;

public class Ser {
    public static void main(String[] args) throws Exception {

        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(bos);
            out.writeObject(Collections.EMPTY_SET);
            out.flush();
            ObjectInputStream in = new ObjectInputStream(
                    new ByteArrayInputStream(bos.toByteArray()));

            if (!Collections.EMPTY_SET.equals(in.readObject()))
                throw new RuntimeException("empty set Ser/Deser failure.");
        } catch (Exception e) {
            throw new RuntimeException("Failed to serialize empty set:" + e);
        }

        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(bos);
            out.writeObject(Collections.EMPTY_LIST);
            out.flush();
            ObjectInputStream in = new ObjectInputStream(
                    new ByteArrayInputStream(bos.toByteArray()));

            if (!Collections.EMPTY_LIST.equals(in.readObject()))
                throw new RuntimeException("empty list Ser/Deser failure.");
        } catch (Exception e) {
            throw new RuntimeException("Failed to serialize empty list:" + e);
        }

        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(bos);
            Set gumby = Collections.singleton("gumby");
            out.writeObject(gumby);
            out.flush();
            ObjectInputStream in = new ObjectInputStream(
                    new ByteArrayInputStream(bos.toByteArray()));

            if (!gumby.equals(in.readObject()))
                throw new RuntimeException("Singleton Ser/Deser failure.");
        } catch (Exception e) {
            throw new RuntimeException("Failed to serialize singleton:" + e);
        }

        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(bos);
            List gumbies = Collections.nCopies(50, "gumby");
            out.writeObject(gumbies);
            out.flush();
            ObjectInputStream in = new ObjectInputStream(
                    new ByteArrayInputStream(bos.toByteArray()));

            if (!gumbies.equals(in.readObject()))
                throw new RuntimeException("nCopies Ser/Deser failure.");
        } catch (Exception e) {
            throw new RuntimeException("Failed to serialize nCopies:" + e);
        }
    }
}
Revision:	1.4
Committed:	Mon Jan 8 03:12:03 2018 UTC (6 years, 4 months ago) by jsr166
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.3:	+7 -2 lines
Log Message:	organize imports
#	User	Rev	Content
1	jsr166	1.1	/*
2	jsr166	1.2	* 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	1.2	* 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	1.3	/*
25	jsr166	1.1	* @test
26			* @bug 4190323
27			* @summary EMPTY_SET, EMPTY_LIST, and the collections returned by
28			* nCopies and singleton were spec'd to be serializable, but weren't.
29			*/
30
31	jsr166	1.4	import java.io.ByteArrayInputStream;
32			import java.io.ByteArrayOutputStream;
33			import java.io.ObjectInputStream;
34			import java.io.ObjectOutputStream;
35			import java.util.Collections;
36			import java.util.List;
37			import java.util.Set;
38	jsr166	1.1
39			public class Ser {
40			public static void main(String[] args) throws Exception {
41
42			try {
43			ByteArrayOutputStream bos = new ByteArrayOutputStream();
44			ObjectOutputStream out = new ObjectOutputStream(bos);
45			out.writeObject(Collections.EMPTY_SET);
46			out.flush();
47			ObjectInputStream in = new ObjectInputStream(
48			new ByteArrayInputStream(bos.toByteArray()));
49
50			if (!Collections.EMPTY_SET.equals(in.readObject()))
51			throw new RuntimeException("empty set Ser/Deser failure.");
52			} catch (Exception e) {
53			throw new RuntimeException("Failed to serialize empty set:" + e);
54			}
55
56			try {
57			ByteArrayOutputStream bos = new ByteArrayOutputStream();
58			ObjectOutputStream out = new ObjectOutputStream(bos);
59			out.writeObject(Collections.EMPTY_LIST);
60			out.flush();
61			ObjectInputStream in = new ObjectInputStream(
62			new ByteArrayInputStream(bos.toByteArray()));
63
64			if (!Collections.EMPTY_LIST.equals(in.readObject()))
65			throw new RuntimeException("empty list Ser/Deser failure.");
66			} catch (Exception e) {
67			throw new RuntimeException("Failed to serialize empty list:" + e);
68			}
69
70			try {
71			ByteArrayOutputStream bos = new ByteArrayOutputStream();
72			ObjectOutputStream out = new ObjectOutputStream(bos);
73			Set gumby = Collections.singleton("gumby");
74			out.writeObject(gumby);
75			out.flush();
76			ObjectInputStream in = new ObjectInputStream(
77			new ByteArrayInputStream(bos.toByteArray()));
78
79			if (!gumby.equals(in.readObject()))
80			throw new RuntimeException("Singleton Ser/Deser failure.");
81			} catch (Exception e) {
82			throw new RuntimeException("Failed to serialize singleton:" + e);
83			}
84
85			try {
86			ByteArrayOutputStream bos = new ByteArrayOutputStream();
87			ObjectOutputStream out = new ObjectOutputStream(bos);
88			List gumbies = Collections.nCopies(50, "gumby");
89			out.writeObject(gumbies);
90			out.flush();
91			ObjectInputStream in = new ObjectInputStream(
92			new ByteArrayInputStream(bos.toByteArray()));
93
94			if (!gumbies.equals(in.readObject()))
95			throw new RuntimeException("nCopies Ser/Deser failure.");
96			} catch (Exception e) {
97			throw new RuntimeException("Failed to serialize nCopies:" + e);
98			}
99			}
100			}