86 lines
3.4 KiB
Java
86 lines
3.4 KiB
Java
/*
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* Copyright (c) 2015, 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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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 java.lang.invoke.MethodType;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.InvocationHandler;
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import java.lang.reflect.InvocationTargetException;
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import org.testng.annotations.BeforeTest;
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import org.testng.annotations.Test;
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import static org.testng.Assert.*;
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/**
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* @test
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* @summary test MethodHandleProxies that adds qualified export of sun.invoke
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* from java.base to a dynamic module
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* @run testng ProxyForMethodHandle
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*/
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public class ProxyForMethodHandle {
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/**
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* MethodHandleProxies will add qualified export of sun.invoke from java.base
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* to a dynamic module
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*/
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@Test
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public static void testRunnableMethodHandle() throws Exception {
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MethodHandles.Lookup lookup = MethodHandles.lookup();
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MethodType mt = MethodType.methodType(void.class);
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MethodHandle mh = lookup.findStatic(ProxyForMethodHandle.class, "runForRunnable", mt);
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Runnable proxy = MethodHandleProxies.asInterfaceInstance(Runnable.class, mh);
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proxy.run();
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Class<?> proxyClass = proxy.getClass();
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Module target = proxyClass.getModule();
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assertDynamicModule(target, proxyClass.getClassLoader(), proxyClass);
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}
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static void runForRunnable() {
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System.out.println("runForRunnable");
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}
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public static void assertDynamicModule(Module m, ClassLoader ld, Class<?> proxyClass) {
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if (!m.isNamed() || !m.getName().startsWith("jdk.proxy")) {
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throw new RuntimeException(m.getName() + " not dynamic module");
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}
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if (ld != m.getClassLoader() || proxyClass.getClassLoader() != ld) {
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throw new RuntimeException("unexpected class loader");
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}
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try {
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Constructor<?> cons = proxyClass.getConstructor(InvocationHandler.class);
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cons.newInstance(handler);
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throw new RuntimeException("Expected IllegalAccessException: " + proxyClass);
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} catch (IllegalAccessException e) {
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// expected
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} catch (NoSuchMethodException|InstantiationException|InvocationTargetException e) {
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throw new RuntimeException(e);
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}
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}
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private final static InvocationHandler handler =
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(proxy, m, params) -> { throw new RuntimeException(m.toString()); };
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}
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