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 

    24 import org.testng.annotations.Test;

    25 

    26 import static org.testng.Assert.assertEquals;

    27 

    28 /**

    29  * @author Robert Field

    30  */

    31 

    32 interface IDSs { String m(String a); }

    33 

    34 interface InDefA {

    35     default String xsA__(String s) {

    36         return "A__xsA:" + s;

    37     }

    38 

    39     default String xsAB_(String s) {

    40         return "AB_xsA:" + s;

    41     }

    42 

    43 }

    44 

    45 interface InDefB extends InDefA {

    46 

    47     default String xsAB_(String s) {

    48         return "AB_xsB:" + s;

    49     }

    50 

    51     default String xs_B_(String s) {

    52         return "_B_xsB:" + s;

    53     }

    54 }

    55 

    56 @Test

    57 public class MethodReferenceTestInnerDefault implements InDefB {

    58 

    59     public void testMethodReferenceInnerDefault() {

    60         (new In()).testMethodReferenceInnerDefault();

    61     }

    62 

    63     class In {

    64 

    65         public void testMethodReferenceInnerDefault() {

    66             IDSs q;

    67 

    68             q = MethodReferenceTestInnerDefault.this::xsA__;

    69             assertEquals(q.m("*"), "A__xsA:*");

    70 

    71             q = MethodReferenceTestInnerDefault.this::xsAB_;

    72             assertEquals(q.m("*"), "AB_xsB:*");

    73 

    74             q = MethodReferenceTestInnerDefault.this::xs_B_;

    75             assertEquals(q.m("*"), "_B_xsB:*");

    76         }

    77     }

    78 

    79 }