/**
 * 
 * Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
 * 
 * Licensed 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.
 */
package org.apache.tuscany.core.wire;

import junit.framework.Assert;
import junit.framework.TestCase;
import org.apache.tuscany.core.wire.impl.InvokerInterceptor;
import org.apache.tuscany.core.wire.impl.MessageChannelImpl;
import org.apache.tuscany.core.wire.mock.MockHandler;
import org.apache.tuscany.core.wire.mock.SimpleTarget;
import org.apache.tuscany.core.wire.mock.MockSyncInterceptor;
import org.apache.tuscany.core.wire.mock.SimpleTargetImpl;
import org.apache.tuscany.core.wire.mock.MockStaticInvoker;
import org.apache.tuscany.core.message.Message;
import org.apache.tuscany.core.message.MessageFactory;
import org.apache.tuscany.core.message.impl.MessageFactoryImpl;

import java.lang.reflect.Method;

/**
 * Tests error propagation through an innvocation
 * 
 * @version $Rev$ $Date$
 */
public class InvocationConfigurationErrorTestCase extends TestCase {

    
    private Method hello;

    private MessageFactory factory = new MessageFactoryImpl();
    
    public InvocationConfigurationErrorTestCase() {
        super();
    }

    public InvocationConfigurationErrorTestCase(String arg0) {
        super(arg0);
    }
    
    public void setUp() throws Exception {
        hello = SimpleTarget.class.getMethod("hello", String.class);
    }

    public void testInvokeWithHandlers() throws Exception{
        SourceInvocationConfiguration source = new SourceInvocationConfiguration(hello);
        MockHandler sourceRequestHandler = new MockHandler();
        MockHandler sourceResponseHandler = new MockHandler();
        MockSyncInterceptor sourceInterceptor = new MockSyncInterceptor();
        source.addRequestHandler(sourceRequestHandler);
        source.addResponseHandler(sourceResponseHandler);
        source.addInterceptor(sourceInterceptor);

        TargetInvocationConfiguration target = new TargetInvocationConfiguration(hello);
        MockHandler targetRequestHandler = new MockHandler();
        MockHandler targetResponseHandler = new MockHandler();
        MockSyncInterceptor targetInterceptor = new MockSyncInterceptor();
        target.addRequestHandler(targetRequestHandler);
        target.addResponseHandler(targetResponseHandler);
        target.addInterceptor(targetInterceptor);
        target.addInterceptor(new InvokerInterceptor());

        // connect the source to the target
        source.setTargetRequestChannel(new MessageChannelImpl(target.getRequestHandlers()));
        source.setTargetResponseChannel(new MessageChannelImpl(target.getResponseHandlers()));
        source.build();
        target.build();
        MockStaticInvoker invoker = new MockStaticInvoker(hello, new SimpleTargetImpl());
        source.setTargetInvoker(invoker);
        
        Message msg = factory.createMessage();
        msg.setTargetInvoker(invoker);
        Message response = source.getHeadInterceptor().invoke(msg);
        Assert.assertTrue(response.getBody() instanceof IllegalArgumentException);
        Assert.assertEquals(1,sourceRequestHandler.getCount());
        Assert.assertEquals(1,sourceResponseHandler.getCount());
        Assert.assertEquals(1,sourceInterceptor.getCount());
        Assert.assertEquals(1,targetRequestHandler.getCount());
        Assert.assertEquals(1,targetResponseHandler.getCount());
        Assert.assertEquals(1,targetInterceptor.getCount());
    }

    public void testInvokeWithRequestHandlers() throws Exception{
        SourceInvocationConfiguration source = new SourceInvocationConfiguration(hello);
        MockHandler sourceRequestHandler = new MockHandler();
        MockSyncInterceptor sourceInterceptor = new MockSyncInterceptor();
        source.addRequestHandler(sourceRequestHandler);
        source.addInterceptor(sourceInterceptor);

        TargetInvocationConfiguration target = new TargetInvocationConfiguration(hello);
        MockHandler targetRequestHandler = new MockHandler();
        MockSyncInterceptor targetInterceptor = new MockSyncInterceptor();
        target.addRequestHandler(targetRequestHandler);
        target.addInterceptor(targetInterceptor);
        target.addInterceptor(new InvokerInterceptor());

        // connect the source to the target
        source.setTargetRequestChannel(new MessageChannelImpl(target.getRequestHandlers()));
        source.setTargetResponseChannel(new MessageChannelImpl(target.getResponseHandlers()));
        source.build();
        target.build();
        MockStaticInvoker invoker = new MockStaticInvoker(hello, new SimpleTargetImpl());
        source.setTargetInvoker(invoker);
        
        Message msg = factory.createMessage();
        msg.setTargetInvoker(invoker);
        Message response = source.getHeadInterceptor().invoke(msg);
        Assert.assertTrue(response.getBody() instanceof IllegalArgumentException);
        Assert.assertEquals(1,sourceRequestHandler.getCount());
        Assert.assertEquals(1,sourceInterceptor.getCount());
        Assert.assertEquals(1,targetRequestHandler.getCount());
        Assert.assertEquals(1,targetInterceptor.getCount());
    }

    /**
     * Tests basic wiring of a source to a target, including handlers and interceptors
     */
    public void testInvokeWithInterceptorsOnly() throws Exception{
        SourceInvocationConfiguration source = new SourceInvocationConfiguration(hello);
        MockSyncInterceptor sourceInterceptor = new MockSyncInterceptor();
        source.addInterceptor(sourceInterceptor);

        TargetInvocationConfiguration target = new TargetInvocationConfiguration(hello);
        MockSyncInterceptor targetInterceptor = new MockSyncInterceptor();
        target.addInterceptor(targetInterceptor);
        target.addInterceptor(new InvokerInterceptor());

        // connect the source to the target
        source.setTargetInterceptor(target.getHeadInterceptor());
        source.build();
        target.build();
        MockStaticInvoker invoker = new MockStaticInvoker(hello, new SimpleTargetImpl());
        source.setTargetInvoker(invoker);
        
        Message msg = factory.createMessage();
        msg.setTargetInvoker(invoker);
        Message response = source.getHeadInterceptor().invoke(msg);
        Assert.assertTrue(response.getBody() instanceof IllegalArgumentException);
        Assert.assertEquals(1,sourceInterceptor.getCount());
        Assert.assertEquals(1,targetInterceptor.getCount());

    }

}