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 * LambdaTranslationCompoundSamTest 30 * 31 * @author Brian Goetz 32 */ 33 @Test 34 public class LambdaTranslationCompoundSamTest { 35 interface Accepts<T> { accept(T t)36 void accept(T t); 37 } 38 39 interface AcceptsInt { accept(int i)40 void accept(int i); 41 } 42 43 interface A<T> extends Accepts<T> { 44 accept(int value)45 default void accept(int value) { 46 throw new IllegalStateException(); 47 } 48 49 interface OfInt extends A<Integer>, AcceptsInt { 50 @Override accept(int value)51 void accept(int value); 52 53 @Override accept(Integer i)54 default void accept(Integer i) { 55 accept(i.intValue()); 56 } 57 } 58 } 59 60 protected interface Target<T> extends A<T> { 61 public interface OfInt extends Target<Integer>, A.OfInt { } 62 } 63 testConversion()64 public void testConversion() { 65 int[] result = new int[4]; 66 67 Target<Integer> tb = (Integer i) -> { result[0] = i+1; }; 68 tb.accept((Integer) 3); 69 assertEquals(4, result[0]); 70 71 Target.OfInt ti = (int i) -> { result[1] = i+1; }; 72 ti.accept(7); 73 assertEquals(8, result[1]); 74 } 75 } 76