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      1 /*
      2  * Copyright (c) 2012, 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 package org.openjdk.tests.java.lang.invoke;
     24 
     25 import org.testng.annotations.Test;
     26 
     27 import java.io.Serializable;
     28 import java.lang.invoke.SerializedLambda;
     29 import java.lang.reflect.Method;
     30 
     31 import static org.testng.Assert.fail;
     32 
     33 /**
     34  * Ensure that the $deserializeLambda$ method is present when it should be, and absent otherwise
     35  */
     36 
     37 @Test(groups = { "serialization-hostile" })
     38 public class DeserializeMethodTest {
     39     private void assertDeserializeMethod(Class<?> clazz, boolean expectedPresent) {
     40         try {
     41             Method m = clazz.getDeclaredMethod("$deserializeLambda$", SerializedLambda.class);
     42             if (!expectedPresent)
     43                 fail("Unexpected $deserializeLambda$ in " + clazz);
     44         }
     45         catch (NoSuchMethodException e) {
     46             if (expectedPresent)
     47                 fail("Expected to find $deserializeLambda$ in " + clazz);
     48         }
     49     }
     50 
     51     static class Empty {}
     52 
     53     public void testEmptyClass() {
     54         assertDeserializeMethod(Empty.class, false);
     55     }
     56 
     57     static class Cap1 {
     58         void foo() {
     59             Runnable r = (Runnable & Serializable) () -> { };
     60         }
     61     }
     62 
     63     public void testCapturingSerLambda() {
     64         assertDeserializeMethod(Cap1.class, true);
     65     }
     66 
     67     static class Cap2 {
     68         void foo() {
     69             Runnable r = () -> { };
     70         }
     71     }
     72 
     73     public void testCapturingNonSerLambda() {
     74         assertDeserializeMethod(Cap2.class, false);
     75     }
     76 
     77     interface Marker { }
     78     static class Cap3 {
     79         void foo() {
     80             Runnable r = (Runnable & Marker) () -> { };
     81         }
     82     }
     83 
     84     public void testCapturingNonserIntersectionLambda() {
     85         assertDeserializeMethod(Cap3.class, false);
     86     }
     87 }
     88