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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());

        }

    }

}