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*/
/* @test
* @bug 4258644
* @summary ObjectInputStream's default implementation of its protected
* resolveProxyClass method is specified to pass the first non-null class
* loader up the execution stack to the Proxy.getProxyClass method when
* it creates the specified proxy class; this test makes sure that it does
* that in situations where it hadn't in the past, such as if the defining
* loaders of the interfaces were all strict ancestors of the first
* non-null loader up the stack.
* @author Peter Jones
*
* @build ResolveProxyClass
* @run main ResolveProxyClass
*/
import java.lang.reflect.*;
import java.io.*;
public class ResolveProxyClass {
/*
* This class is a dummy ObjectInputStream subclass that allows the
* test code to access ObjectInputStream's protected resolveProxyClass
* method directly.
*/
private static class TestObjectInputStream extends ObjectInputStream {
TestObjectInputStream() throws IOException {
super();
}
protected Class resolveProxyClass(String[] interfaces)
throws IOException, ClassNotFoundException
{
return super.resolveProxyClass(interfaces);
}
}
public static void main(String[] args) {
System.err.println("\nRegression test for bug 4258644\n");
try {
/*
* Set this thread's context class loader to null, so that the
* resolveProxyClass implementation cannot cheat by guessing that
* the context class loader is the appropriate loader to pass to
* the Proxy.getProxyClass method.
*/
Thread.currentThread().setContextClassLoader(null);
/*
* Expect the proxy class to be defined in the system class
* loader, because that is the defining loader of this test
* code, and it should be the first loader on the stack when
* ObjectInputStream.resolveProxyClass gets executed.
*/
ClassLoader expectedLoader = ResolveProxyClass.class.getClassLoader();
TestObjectInputStream in = new TestObjectInputStream();
Class proxyClass = in.resolveProxyClass(
new String[] { Runnable.class.getName() });
ClassLoader proxyLoader = proxyClass.getClassLoader();
System.err.println("proxy class \"" + proxyClass +
"\" defined in loader: " + proxyLoader);
if (proxyLoader != expectedLoader) {
throw new RuntimeException(
"proxy class defined in loader: " + proxyLoader);
}
System.err.println("\nTEST PASSED");
} catch (Throwable e) {
System.err.println("\nTEST FAILED:");
e.printStackTrace();
throw new RuntimeException("TEST FAILED: " + e.toString());
}
}
}