/* 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.activiti.engine.test.api.event;

import org.activiti.engine.delegate.event.ActivitiEvent;
import org.activiti.engine.delegate.event.ActivitiEventListener;
import org.activiti.engine.delegate.event.ActivitiEventType;
import org.activiti.engine.impl.bpmn.helper.MessageThrowingEventListener;
import org.activiti.engine.impl.test.PluggableActivitiTestCase;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.activiti.engine.test.Deployment;

/**
 * Test case for all {@link ActivitiEventListener}s that throw a message BPMN event when an {@link ActivitiEvent}
 * has been dispatched.
 * 
 * @author Frederik Heremans
 */
public class MessageThrowingEventListenerTest extends PluggableActivitiTestCase {

	@Deployment
	public void testThrowMessage() throws Exception {
		MessageThrowingEventListener listener = null;
		try {
			listener = new MessageThrowingEventListener();
			listener.setMessageName("Message");
			
			processEngineConfiguration.getEventDispatcher().addEventListener(listener, ActivitiEventType.TASK_ASSIGNED);
			
			ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("testMessage");
			assertNotNull(processInstance);
			
			// Fetch the task and re-assig it to trigger the event-listener
			Task task = taskService.createTaskQuery().processInstanceId(processInstance.getId())
					.singleResult();
			assertNotNull(task);
			taskService.setAssignee(task.getId(), "kermit");
			
			// Boundary-event should have been messaged and a new task should be available, on top of the already
			// existing one, since the cancelActivity='false'
			task = taskService.createTaskQuery().processInstanceId(processInstance.getId())
					.taskDefinitionKey("subTask")
					.singleResult();
			assertNotNull(task);
			assertEquals("kermit", task.getAssignee());
			
			Task boundaryTask = taskService.createTaskQuery().processInstanceId(processInstance.getId())
					.taskDefinitionKey("boundaryTask")
					.singleResult();
			assertNotNull(boundaryTask);
			
			
		} finally {
			processEngineConfiguration.getEventDispatcher().removeEventListener(listener);
		}
	}
	
	@Deployment
	public void testThrowMessageDefinedInProcessDefinition() throws Exception {
		ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("testMessage");
		assertNotNull(processInstance);
		
		// Fetch the task and re-assig it to trigger the event-listener
		Task task = taskService.createTaskQuery().processInstanceId(processInstance.getId())
				.singleResult();
		assertNotNull(task);
		taskService.setAssignee(task.getId(), "kermit");
		
		// Boundary-event should have been messaged and a new task should be available, on top of the already
		// existing one, since the cancelActivity='false'
		task = taskService.createTaskQuery().processInstanceId(processInstance.getId())
				.taskDefinitionKey("subTask")
				.singleResult();
		assertNotNull(task);
		assertEquals("kermit", task.getAssignee());
		
		Task boundaryTask = taskService.createTaskQuery().processInstanceId(processInstance.getId())
				.taskDefinitionKey("boundaryTask")
				.singleResult();
		assertNotNull(boundaryTask);
	}
	
	@Deployment
	public void testThrowMessageInterrupting() throws Exception {
		MessageThrowingEventListener listener = null;
		try {
			listener = new MessageThrowingEventListener();
			listener.setMessageName("Message");
			
			processEngineConfiguration.getEventDispatcher().addEventListener(listener, ActivitiEventType.TASK_ASSIGNED);
			
			ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("testMessage");
			assertNotNull(processInstance);
			
			// Fetch the task and re-assig it to trigger the event-listener
			Task task = taskService.createTaskQuery().processInstanceId(processInstance.getId())
					.singleResult();
			assertNotNull(task);
			taskService.setAssignee(task.getId(), "kermit");
			
			// Boundary-event should have been messaged and a new task should be available,  the already
			// existing one should be removed, since the cancelActivity='true'
			task = taskService.createTaskQuery().processInstanceId(processInstance.getId())
					.taskDefinitionKey("subTask")
					.singleResult();
			assertNull(task);
			
			Task boundaryTask = taskService.createTaskQuery().processInstanceId(processInstance.getId())
					.taskDefinitionKey("boundaryTask")
					.singleResult();
			assertNotNull(boundaryTask);
		} finally {
			processEngineConfiguration.getEventDispatcher().removeEventListener(listener);
		}
	}
}