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