test/tools/javac/lambda/8012557/PrivateLambdas.java

Thu, 30 Jan 2014 11:09:01 -0800

author
sogoel
date
Thu, 30 Jan 2014 11:09:01 -0800
changeset 2255
b2e4c5ca111f
parent 0
959103a6100f
permissions
-rw-r--r--

8027175: Existing regression tests in tl/langtools and tl/jdk need to be updated for @bug keyword
Reviewed-by: jjg, ksrini
Contributed-by: matherey.nunez@oracle.com

     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  */
    24 /*
    25  * @test
    26  * @bug 8012557
    27  * @summary Check that 8012557 is fixed, that interface lambda
    28  *          methods are private
    29  * @author  Robert Field
    30  * @compile SAM.java
    31  * @compile A.java
    32  * @compile B.java
    33  * @compile C.java
    34  * @run main PrivateLambdas
    35  *
    36  * Unless the lambda methods are private, this will fail with:
    37  *  AbstractMethodError:
    38  *        Conflicting default methods: A.lambda$0 B.lambda$0 C.lambda$0
    39  */
    41 import java.lang.reflect.Method;
    42 import java.lang.reflect.Modifier;
    44 interface X extends A, B, C {
    45    default String u() { return " "; }
    46    default String name() {
    47       return A.super.name() + B.super.name() + C.super.name();
    48    }
    49 }
    51 public class PrivateLambdas implements X {
    52    public static void main(String[] args) throws Exception {
    54       // Check that all the lambda methods are private instance synthetic
    55       for (Class<?> k : new Class<?>[] { A.class, B.class, C.class }) {
    56          Method[] methods = k.getDeclaredMethods();
    57          int lambdaCount = 0;
    58          for(Method m : methods) {
    59             if (m.getName().startsWith("lambda$")) {
    60                ++lambdaCount;
    61                int mod = m.getModifiers();
    62                if ((mod & Modifier.PRIVATE) == 0) {
    63                   throw new Exception("Expected " + m + " to be private");
    64                }
    65                if (!m.isSynthetic()) {
    66                   throw new Exception("Expected " + m + " to be synthetic");
    67                }
    68                if ((mod & Modifier.STATIC) != 0) {
    69                   throw new Exception("Expected " + m + " to be instance method");
    70                }
    71             }
    72          }
    73          if (lambdaCount == 0) {
    74             throw new Exception("Expected at least one lambda method");
    75          }
    76       }
    78       /*
    79        * Unless the lambda methods are private, this will fail with:
    80        *  AbstractMethodError:
    81        *        Conflicting default methods: A.lambda$0 B.lambda$0 C.lambda$0
    82        */
    83       X x = new PrivateLambdas();
    84       if (!x.name().equals(" A B C")) {
    85          throw new Exception("Expected ' A B C' got: " + x.name());
    86       }
    87    }
    88 }

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