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/*
* Copyright (c) 1999, 2013, 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 4227192 4487672
* @summary This is a basic functional test of the dynamic proxy API (part 1).
* @author Peter Jones
*
* @build Basic1
* @run main Basic1
*/
import java.lang.reflect.*;
import java.security.*;
import java.util.*;
public class Basic1 {
public static void main(String[] args) {
System.err.println(
"\nBasic functional test of dynamic proxy API, part 1\n");
try {
Class<?>[] interfaces =
new Class<?>[] { Runnable.class, Observer.class };
ClassLoader loader = ClassLoader.getSystemClassLoader();
/*
* Generate a proxy class.
*/
Class<?> proxyClass = Proxy.getProxyClass(loader, interfaces);
System.err.println("+ generated proxy class: " + proxyClass);
/*
* Verify that it is public, final, and not abstract.
*/
int flags = proxyClass.getModifiers();
System.err.println(
"+ proxy class's modifiers: " + Modifier.toString(flags));
if (!Modifier.isPublic(flags)) {
throw new RuntimeException("proxy class in not public");
}
if (!Modifier.isFinal(flags)) {
throw new RuntimeException("proxy class in not final");
}
if (Modifier.isAbstract(flags)) {
throw new RuntimeException("proxy class in abstract");
}
/*
* Verify that it is assignable to the proxy interfaces.
*/
for (Class<?> intf : interfaces) {
if (!intf.isAssignableFrom(proxyClass)) {
throw new RuntimeException(
"proxy class not assignable to proxy interface " +
intf.getName());
}
}
/*
* Verify that it has the given permutation of interfaces.
*/
List<Class<?>> l1 = Arrays.asList(interfaces);
List<Class<?>> l2 = Arrays.asList(proxyClass.getInterfaces());
System.err.println("+ proxy class's interfaces: " + l2);
if (!l1.equals(l2)) {
throw new RuntimeException(
"proxy class interfaces are " + l2 +
" (expected " + l1 + ")");
}
/*
* Verify that system agress that it is a proxy class.
*/
if (Proxy.isProxyClass(Object.class)) {
throw new RuntimeException(
"Proxy.isProxyClass returned true for java.lang.Object");
}
if (!Proxy.isProxyClass(proxyClass)) {
throw new RuntimeException(
"Proxy.isProxyClass returned false for proxy class");
}
/*
* Verify that its protection domain is the bootstrap domain.
*/
ProtectionDomain pd = proxyClass.getProtectionDomain();
System.err.println("+ proxy class's protection domain: " + pd);
if (!pd.implies(new AllPermission())) {
throw new RuntimeException(
"proxy class does not have AllPermission");
}
/*
* Verify that it has a constructor that takes an
* InvocationHandler instance.
*/
Constructor<?> cons = proxyClass.getConstructor(InvocationHandler.class);
/*
* Test constructor with null InvocationHandler
*/
try {
cons.newInstance(new Object[] { null });
throw new RuntimeException("Expected NullPointerException thrown");
} catch (InvocationTargetException e) {
Throwable t = e.getTargetException();
if (!(t instanceof NullPointerException)) {
throw t;
}
}
/*
* Construct a proxy instance.
*/
Handler handler = new Handler();
Object proxy = cons.newInstance(handler);
handler.currentProxy = proxy;
/*
* Invoke a method on a proxy instance.
*/
Method m = Runnable.class.getMethod("run");
((Runnable) proxy).run();
if (!handler.lastMethod.equals(m)) {
throw new RuntimeException(
"proxy method invocation failure (lastMethod = " +
handler.lastMethod + ")");
}
System.err.println("\nTEST PASSED");
} catch (Throwable e) {
System.err.println("\nTEST FAILED:");
e.printStackTrace();
throw new RuntimeException("TEST FAILED: " + e.toString());
}
}
public static class Handler implements InvocationHandler {
Object currentProxy;
Method lastMethod;
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable
{
if (proxy != currentProxy) {
throw new RuntimeException(
"wrong proxy instance passed to invoke method");
}
lastMethod = method;
return null;
}
}
}
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