/* * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ import org.testng.annotations.Test; import static org.testng.Assert.assertEquals; /** * LambdaTranslationCompoundSamTest * * @author Brian Goetz */ @Test public class LambdaTranslationCompoundSamTest { interface Accepts<T> { void accept(T t); } interface AcceptsInt { void accept(int i); } interface A<T> extends Accepts<T> { default void accept(int value) { throw new IllegalStateException(); } interface OfInt extends A<Integer>, AcceptsInt { @Override void accept(int value); @Override default void accept(Integer i) { accept(i.intValue()); } } } protected interface Target<T> extends A<T> { public interface OfInt extends Target<Integer>, A.OfInt { } } public void testConversion() { int[] result = new int[4]; Target<Integer> tb = (Integer i) -> { result[0] = i+1; }; tb.accept((Integer) 3); assertEquals(4, result[0]); Target.OfInt ti = (int i) -> { result[1] = i+1; }; ti.accept(7); assertEquals(8, result[1]); } }