test/jdk/java/lang/reflect/Proxy/SealedInterfaceTest.java

/*
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 * 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.
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 */

/*
 * @test
 * @bug 8269351
 * @run testng SealedInterfaceTest
 */

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

import org.testng.annotations.Test;
import static org.testng.Assert.*;

public class SealedInterfaceTest {
    sealed interface Intf permits NonSealedInterface {
        void m1();
    }

    non-sealed interface NonSealedInterface extends Intf {
        void m2();
    }

    @Test(expectedExceptions = { IllegalArgumentException.class })
    public void testSealedInterface() {
        Proxy.newProxyInstance(SealedInterfaceTest.class.getClassLoader(),
                new Class<?>[]{ Intf.class },
                new InvocationHandler() {
                    @Override
                    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                        return null;
                    }
                });
    }

    @Test
    public void testNonSealedInterface() {
        Proxy.newProxyInstance(SealedInterfaceTest.class.getClassLoader(),
                new Class<?>[]{ NonSealedInterface.class },
                new InvocationHandler() {
                    @Override
                    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                        return null;
                    }
                });
    }
}