1 /*
   2  * Copyright (c) 2012, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package org.openjdk.tests.javac;
  26 
  27 import static org.testng.Assert.assertEquals;
  28 import org.testng.annotations.Test;
  29 
  30 /**
  31  * @author Robert Field
  32  */
  33 
  34 interface LTII {
  35 
  36     interface ILsp1 {
  37         String m();
  38     }
  39 
  40     interface ILsp2 {
  41         String m(String x);
  42     }
  43 
  44     default ILsp1 t1() {
  45         return () -> { return "yo"; };
  46     }
  47 
  48     default ILsp2 t2() {
  49         return (x) -> { return "snur" + x; };
  50     }
  51 
  52 }
  53 
  54 @Test
  55 public class LambdaTranslationInInterface implements LTII {
  56 
  57     public void testLambdaInDefaultMethod() {
  58         assertEquals(t1().m(), "yo");
  59         assertEquals(t2().m("p"), "snurp");
  60     }
  61 
  62 }