langtools/test/tools/javac/lambda/GenericMethodRefImplClass.java
author rfield
Thu, 07 Mar 2013 08:26:13 -0800
changeset 16335 4f7fe060522f
permissions -rw-r--r--
8009582: Method reference generic constructor gives: IllegalArgumentException: Invalid lambda deserialization Reviewed-by: mcimadamore
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/*
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 * Copyright (c) 2013, 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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/*
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 * @test
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 * @bug 8009582
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 * @summary Method reference generic constructor gives: IllegalArgumentException: Invalid lambda deserialization
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 * @author  Robert Field
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 * @run main GenericMethodRefImplClass
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 */
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import java.io.*;
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import java.util.*;
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public class GenericMethodRefImplClass {
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    static int assertionCount = 0;
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    static void assertTrue(boolean cond) {
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        assertionCount++;
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        if (!cond)
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            throw new AssertionError();
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    }
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    public static void main(String[] args) throws Exception {
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        try {
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            // Write lambdas out
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            ByteArrayOutputStream baos = new ByteArrayOutputStream();
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            ObjectOutput out = new ObjectOutputStream(baos);
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            write(out, HashMap::new );
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            out.flush();
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            out.close();
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            // Read them back
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            ByteArrayInputStream bais =
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                new ByteArrayInputStream(baos.toByteArray());
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            ObjectInputStream in = new ObjectInputStream(bais);
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            readIt(in);
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            in.close();
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        } catch (IOException e) {
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            e.printStackTrace();
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            throw e;
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        }
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        assertTrue(assertionCount == 1);
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    }
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    static void write(ObjectOutput out, GenericMethodRefImplClassLSI lamb) throws IOException {
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        out.writeObject(lamb);
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    }
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    static void readIt(ObjectInputStream in)  throws IOException, ClassNotFoundException {
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        GenericMethodRefImplClassLSI ls = (GenericMethodRefImplClassLSI) in.readObject();
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        Map result = ls.convert();
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        assertTrue(result.getClass().getName().equals("java.util.HashMap"));
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    }
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}
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interface GenericMethodRefImplClassLSI extends Serializable {
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    Map convert();
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}