/*
* 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.
*/
package org.apache.cloudstack.mom.inmemory;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import java.util.UUID;
import org.apache.cloudstack.framework.events.Event;
import org.apache.cloudstack.framework.events.EventBusException;
import org.apache.cloudstack.framework.events.EventSubscriber;
import org.apache.cloudstack.framework.events.EventTopic;
import org.junit.Test;
import com.cloud.utils.UuidUtils;
public class InMemoryEventBusTest {
@Test
public void testConfigure() throws Exception {
String name = "test001";
InMemoryEventBus bus = new InMemoryEventBus();
boolean success = bus.configure(name, null);
assertTrue(success);
assertTrue(name.equals(bus.getName()));
}
@Test
public void testSubscribe() throws Exception {
EventTopic topic = mock(EventTopic.class);
EventSubscriber subscriber = mock(EventSubscriber.class);
InMemoryEventBus bus = new InMemoryEventBus();
UUID uuid = bus.subscribe(topic, subscriber);
assertNotNull(uuid);
String uuidStr = uuid.toString();
assertTrue(UuidUtils.validateUUID(uuidStr));
assertTrue(bus.totalSubscribers() == 1);
bus.unsubscribe(uuid, subscriber);
assertTrue(bus.totalSubscribers() == 0);
}
@Test(expected = EventBusException.class)
public void testSubscribeFailTopic() throws Exception {
EventSubscriber subscriber = mock(EventSubscriber.class);
InMemoryEventBus bus = new InMemoryEventBus();
bus.subscribe(null, subscriber);
}
@Test(expected = EventBusException.class)
public void testSubscribeFailSubscriber() throws Exception {
EventTopic topic = mock(EventTopic.class);
InMemoryEventBus bus = new InMemoryEventBus();
bus.subscribe(topic, null);
}
@Test
public void testUnsubscribe() throws Exception {
EventTopic topic = mock(EventTopic.class);
EventSubscriber subscriber = mock(EventSubscriber.class);
InMemoryEventBus bus = new InMemoryEventBus();
UUID uuid = bus.subscribe(topic, subscriber);
assertNotNull(uuid);
String uuidStr = uuid.toString();
assertTrue(UuidUtils.validateUUID(uuidStr));
assertTrue(bus.totalSubscribers() == 1);
//
bus.unsubscribe(uuid, subscriber);
assertTrue(bus.totalSubscribers() == 0);
}
@Test(expected = EventBusException.class)
public void testUnsubscribeFailEmpty() throws Exception {
UUID uuid = UUID.randomUUID();
InMemoryEventBus bus = new InMemoryEventBus();
bus.unsubscribe(uuid, null);
}
@Test(expected = EventBusException.class)
public void testUnsubscribeFailNull() throws Exception {
InMemoryEventBus bus = new InMemoryEventBus();
bus.unsubscribe(null, null);
}
@Test(expected = EventBusException.class)
public void testUnsubscribeFailWrongUUID() throws Exception {
EventSubscriber subscriber = mock(EventSubscriber.class);
InMemoryEventBus bus = new InMemoryEventBus();
UUID uuid = UUID.randomUUID();
bus.unsubscribe(uuid, subscriber);
}
@Test
public void testPublish() throws Exception {
EventTopic topic = mock(EventTopic.class);
EventSubscriber subscriber = mock(EventSubscriber.class);
Event event = mock(Event.class);
InMemoryEventBus bus = new InMemoryEventBus();
UUID uuid = bus.subscribe(topic, subscriber);
assertNotNull(uuid);
String uuidStr = uuid.toString();
assertTrue(UuidUtils.validateUUID(uuidStr));
assertTrue(bus.totalSubscribers() == 1);
bus.publish(event);
verify(subscriber, times(1)).onEvent(event);
bus.unsubscribe(uuid, subscriber);
assertTrue(bus.totalSubscribers() == 0);
}
@Test
public void testPublishEmpty() throws Exception {
EventSubscriber subscriber = mock(EventSubscriber.class);
Event event = mock(Event.class);
InMemoryEventBus bus = new InMemoryEventBus();
bus.publish(event);
verify(subscriber, times(0)).onEvent(event);
}
}