langtools/test/tools/javac/lambda/GenericMethodRefImplClass.java
changeset 16335 4f7fe060522f
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16334:49b3f71982f6 16335:4f7fe060522f
       
     1 /*
       
     2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
       
     3  * 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  * 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  */
       
    23 
       
    24 /*
       
    25  * @test
       
    26  * @bug 8009582
       
    27  * @summary Method reference generic constructor gives: IllegalArgumentException: Invalid lambda deserialization
       
    28  * @author  Robert Field
       
    29  * @run main GenericMethodRefImplClass
       
    30  */
       
    31 
       
    32 import java.io.*;
       
    33 import java.util.*;
       
    34 
       
    35 public class GenericMethodRefImplClass {
       
    36 
       
    37     static int assertionCount = 0;
       
    38 
       
    39     static void assertTrue(boolean cond) {
       
    40         assertionCount++;
       
    41         if (!cond)
       
    42             throw new AssertionError();
       
    43     }
       
    44 
       
    45     public static void main(String[] args) throws Exception {
       
    46         try {
       
    47             // Write lambdas out
       
    48             ByteArrayOutputStream baos = new ByteArrayOutputStream();
       
    49             ObjectOutput out = new ObjectOutputStream(baos);
       
    50 
       
    51             write(out, HashMap::new );
       
    52             out.flush();
       
    53             out.close();
       
    54 
       
    55             // Read them back
       
    56             ByteArrayInputStream bais =
       
    57                 new ByteArrayInputStream(baos.toByteArray());
       
    58             ObjectInputStream in = new ObjectInputStream(bais);
       
    59             readIt(in);
       
    60             in.close();
       
    61         } catch (IOException e) {
       
    62             e.printStackTrace();
       
    63             throw e;
       
    64         }
       
    65         assertTrue(assertionCount == 1);
       
    66     }
       
    67 
       
    68     static void write(ObjectOutput out, GenericMethodRefImplClassLSI lamb) throws IOException {
       
    69         out.writeObject(lamb);
       
    70     }
       
    71 
       
    72     static void readIt(ObjectInputStream in)  throws IOException, ClassNotFoundException {
       
    73         GenericMethodRefImplClassLSI ls = (GenericMethodRefImplClassLSI) in.readObject();
       
    74         Map result = ls.convert();
       
    75         assertTrue(result.getClass().getName().equals("java.util.HashMap"));
       
    76     }
       
    77 }
       
    78 
       
    79 interface GenericMethodRefImplClassLSI extends Serializable {
       
    80     Map convert();
       
    81 }