test/jdk/java/io/Serializable/enum/ignoreSerializationFields/Test.java
author rriggs
Fri, 11 Oct 2019 13:11:56 -0400
changeset 58565 baa5969ecf34
parent 47216 71c04702a3d5
permissions -rw-r--r--
8231427: Warning cleanup in tests of java.io.Serializable Reviewed-by: darcy, lancea
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/*
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 * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/* @test
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 * @bug 4838379
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 * @summary Verify that serialVersionUID and serialPersistentFields
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 *          declarations made by enum types and constants are ignored.
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 */
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import java.io.*;
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import java.util.Arrays;
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enum Foo {
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    foo,
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    bar {
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        @SuppressWarnings("serial") /* Incorrect declarations are being tested */
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        private static final long serialVersionUID = 2L;
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        // bar is implemented as an inner class instance, so the following
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        // declaration would cause a compile-time error
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        // private static final ObjectStreamField[] serialPersistentFields = {
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        //    new ObjectStreamField("gub", Float.TYPE)
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        // };
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    };
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    @SuppressWarnings("serial") /* Incorrect declarations are being tested */
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    private static final long serialVersionUID = 1L;
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    @SuppressWarnings("serial") /* Incorrect declarations are being tested */
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    private static final ObjectStreamField[] serialPersistentFields = {
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        new ObjectStreamField("blargh", Integer.TYPE)
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    };
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}
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public class Test {
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    public static void main(String[] args) throws Exception {
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        Class<?>[] classes =
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            { Foo.class, Foo.foo.getClass(), Foo.bar.getClass() };
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        for (int i = 0; i < classes.length; i++) {
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            ObjectStreamClass desc = ObjectStreamClass.lookup(classes[i]);
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            if (desc.getSerialVersionUID() != 0L) {
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                throw new Error(
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                    classes[i] + " has non-zero serialVersionUID: " +
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                    desc.getSerialVersionUID());
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            }
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            ObjectStreamField[] fields = desc.getFields();
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            if (fields.length > 0) {
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                throw new Error(
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                    classes[i] + " has non-empty list of fields: " +
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                    Arrays.asList(fields));
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            }
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        }
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    }
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}