test/jdk/java/io/ObjectInputStream/TestObjectStreamClass.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) 2015, 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 8135043
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 * @summary ObjectStreamClass.getField(String) too restrictive
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 */
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.ObjectStreamClass;
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import java.io.Serializable;
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public class TestObjectStreamClass {
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    public static void main(String[] args) throws Exception {
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        ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
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        ObjectOutputStream output = new ObjectOutputStream(byteOutput);
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        output.writeObject(new TestClass());
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        ByteArrayInputStream bais = new ByteArrayInputStream(byteOutput.toByteArray());
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        TestObjectInputStream input = new TestObjectInputStream(bais);
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        input.readObject();
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        ObjectStreamClass osc = input.getDescriptor();
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        // All OSC public API methods should complete without throwing.
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        osc.getName();
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        osc.forClass();
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        osc.getField("str");
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        osc.getFields();
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        osc.getSerialVersionUID();
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        osc.toString();
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    }
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    static class TestClass implements Serializable {
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        private static final long serialVersionUID = 1L;
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        String str = "hello world";
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    }
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    static class TestObjectInputStream extends ObjectInputStream {
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        private ObjectStreamClass objectStreamClass;
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        public TestObjectInputStream(InputStream in) throws IOException {
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            super(in);
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        }
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        public ObjectStreamClass getDescriptor()
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            throws IOException, ClassNotFoundException
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        {
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            return objectStreamClass;
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        }
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        public ObjectStreamClass readClassDescriptor()
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            throws IOException, ClassNotFoundException
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        {
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            objectStreamClass = super.readClassDescriptor();
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            return objectStreamClass;
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        }
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    }
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}