code: /*
   * Copyright © 2014-2017 EntIT Software LLC, a Micro Focus company (L.P.)
   *
   * 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 io.cloudslang.score.events;
  
  import org.junit.Before;
  import org.junit.Test;
  import org.mockito.Mockito;
  import io.cloudslang.score.events.EventBus;
  import io.cloudslang.score.events.EventBusImpl;
  import io.cloudslang.score.events.ScoreEvent;
  import io.cloudslang.score.events.ScoreEventListener;
  
  import java.util.HashSet;
  import java.util.Set;
  
  public class EventBusTest {
  
  	private ScoreEventListener eventHandler = Mockito.mock(ScoreEventListener.class);
  
  	private EventBus eventBus = new EventBusImpl();
  
  	@Before
  	public void init() {
  		eventBus = new EventBusImpl();
  	}
  
  	@Test
  	public void testDispatch() throws Exception {
  		Set<String> handlerTypes = new HashSet<>();
  		handlerTypes.add("type1");
  
  		eventBus.subscribe(eventHandler, handlerTypes);
  
  		ScoreEvent event = new ScoreEvent("type1", "event");
  		eventBus.dispatch(event);
  
  		Mockito.verify(eventHandler, Mockito.times(1)).onEvent(event);
  
  		event = new ScoreEvent("typeX", "event");
  		eventBus.dispatch(event);
  
  		Mockito.verify(eventHandler, Mockito.times(0)).onEvent(event);
  	}
  
  	@Test
  	public void testUnsubscribe() throws Exception {
  		Set<String> handlerTypes = new HashSet<>();
  		handlerTypes.add("type1");
  
  		eventBus.subscribe(eventHandler, handlerTypes);
  		eventBus.unsubscribe(eventHandler);
  
  		ScoreEvent event = new ScoreEvent("type1", "event");
  		eventBus.dispatch(event);
  
  		Mockito.verify(eventHandler, Mockito.times(0)).onEvent(event);
  	}
  
  }