123 lines
3.6 KiB
Java
123 lines
3.6 KiB
Java
/*
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* Copyright (c) 2018, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 8206955 8269351
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* @run testng/othervm -ea -esa test.java.lang.invoke.MethodHandlesProxiesTest
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*/
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package test.java.lang.invoke;
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import org.testng.annotations.Test;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandleProxies;
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import java.lang.invoke.MethodHandles;
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import static org.testng.Assert.assertEquals;
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public class MethodHandlesProxiesTest {
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public interface A {
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default String a() {
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return "A";
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}
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}
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public interface B {
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default String b() {
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return "B";
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}
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}
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public interface C extends A, B {
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String f();
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default String c() {
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return "C";
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}
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default String concat() {
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return a() + b() + c();
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}
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}
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public interface Override extends C {
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String f();
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default String a() {
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return "OA";
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}
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default String b() {
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return "OB";
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}
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default String c() {
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return "OC";
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}
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}
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@Test
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public static void testDefaultMethods() throws Throwable {
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MethodHandle target = MethodHandles.constant(String.class, "F");
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C proxy = MethodHandleProxies.asInterfaceInstance(C.class, target);
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assertEquals(proxy.f(), "F");
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assertEquals(proxy.a(), "A");
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assertEquals(proxy.b(), "B");
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assertEquals(proxy.c(), "C");
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assertEquals(proxy.concat(), "ABC");
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}
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@Test
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public static void testOverriddenDefaultMethods() throws Throwable {
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MethodHandle target = MethodHandles.constant(String.class, "F");
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Override proxy = MethodHandleProxies.asInterfaceInstance(Override.class, target);
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assertEquals(proxy.a(), "OA");
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assertEquals(proxy.b(), "OB");
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assertEquals(proxy.c(), "OC");
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}
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public sealed interface Intf permits NonSealedInterface {
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String m();
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}
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public non-sealed interface NonSealedInterface extends Intf {
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}
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@Test(expectedExceptions = { IllegalArgumentException.class })
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public void testSealedInterface() {
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MethodHandle target = MethodHandles.constant(String.class, "Sealed");
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MethodHandleProxies.asInterfaceInstance(Intf.class, target);
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}
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@Test
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public void testNonSealedInterface() {
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MethodHandle target = MethodHandles.constant(String.class, "Non-Sealed");
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NonSealedInterface proxy = MethodHandleProxies.asInterfaceInstance(NonSealedInterface.class, target);
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assertEquals(proxy.m(), "Non-Sealed");
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}
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}
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