/* * Copyright (c) 2017, 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. */ /* @test * @bug 8177146 * @run testng/othervm TestMethodHandleBind */ import org.testng.annotations.Test; import java.lang.invoke.MethodHandle; import java.lang.invoke.MethodType; import static java.lang.invoke.MethodHandles.lookup; import static org.testng.Assert.*; public class TestMethodHandleBind extends pkg.A { static class B extends TestMethodHandleBind {} @Test public void testInstanceOfCallerClass() throws Throwable { MethodHandle bound = lookup().bind(new TestMethodHandleBind() , "m1", MethodType.methodType(String.class)); String x = (String)bound.invoke(); assertEquals(x, this.getClass().getSimpleName()); } @Test public void testInstanceOfCallerSubclass() throws Throwable { MethodHandle bound = lookup().bind(new B() , "m1", MethodType.methodType(String.class)); // MethodHandle bound = lookup().findVirtual(B.class, "m1", MethodType.methodType(String.class)).bindTo(new B()); String x = (String)bound.invoke(); assertEquals(x, "B"); } @Test public void testInstanceOfReceiverClass() throws Throwable { try { MethodHandle bound = lookup().bind(new pkg.A() , "m1", MethodType.methodType(String.class)); bound.invoke(); fail("IllegalAccessException expected"); } catch (IllegalAccessException e) { } } @Test public void testPublicMethod() throws Throwable { MethodHandle bound = lookup().bind(new pkg.A() , "m2", MethodType.methodType(String.class)); String x = (String)bound.invoke(); assertEquals(x, "A"); } @Test public void testPublicMethod2() throws Throwable { MethodHandle bound = lookup().bind(new TestMethodHandleBind(), "m2", MethodType.methodType(String.class)); String x = (String)bound.invoke(); assertEquals(x, this.getClass().getSimpleName()); } @Test public void testInstanceOfCallerClassVarargs() throws Throwable { MethodHandle bound = lookup().bind(new TestMethodHandleBind() , "m3", MethodType.methodType(String.class, String[].class)); String x = (String)bound.invoke("a", "b", "c"); assertEquals(x, this.getClass().getSimpleName() + "abc"); } @Test public void testInstanceOfReceiverClassVarargs() throws Throwable { try { MethodHandle bound = lookup().bind(new pkg.A(), "m3", MethodType.methodType(String.class, String[].class)); bound.invoke(); fail("IllegalAccessException expected"); } catch (IllegalAccessException e) { } } }