maven-resolver-impl/src/test/java/org/eclipse/aether/internal/impl/DefaultRepositoryEventDispatcherTest.java

package org.eclipse.aether.internal.impl;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *  http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import static org.junit.Assert.*;

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

import org.eclipse.aether.DefaultRepositorySystemSession;
import org.eclipse.aether.RepositoryEvent;
import org.eclipse.aether.RepositoryListener;
import org.eclipse.aether.internal.impl.DefaultRepositoryEventDispatcher;
import org.eclipse.aether.internal.test.util.TestUtils;
import org.junit.Test;

/**
 */
public class DefaultRepositoryEventDispatcherTest
{

    @Test
    public void testDispatchHandlesAllEventTypes()
        throws Exception
    {
        DefaultRepositoryEventDispatcher dispatcher = new DefaultRepositoryEventDispatcher();

        ListenerHandler handler = new ListenerHandler();

        RepositoryListener listener =
            (RepositoryListener) Proxy.newProxyInstance( getClass().getClassLoader(),
                                                         new Class<?>[] { RepositoryListener.class }, handler );

        DefaultRepositorySystemSession session = TestUtils.newSession();
        session.setRepositoryListener( listener );

        for ( RepositoryEvent.EventType type : RepositoryEvent.EventType.values() )
        {
            RepositoryEvent event = new RepositoryEvent.Builder( session, type ).build();

            handler.methodName = null;

            dispatcher.dispatch( event );

            assertNotNull( "not handled: " + type, handler.methodName );

            assertEquals( "badly handled: " + type, type.name().replace( "_", "" ).toLowerCase( Locale.ENGLISH ),
                          handler.methodName.toLowerCase( Locale.ENGLISH ) );
        }
    }

    static class ListenerHandler
        implements InvocationHandler
    {

        public String methodName;

        public Object invoke( Object proxy, Method method, Object[] args )
            throws Throwable
        {
            if ( args.length == 1 && args[0] instanceof RepositoryEvent )
            {
                methodName = method.getName();
            }

            return null;
        }

    }

}