### Question:
ActiveMQBase { public Set<ActiveMQTopic> getTopics() { DestinationSource source; try { source = new DestinationSource(connection); return source.getTopics(); } catch (JMSException ex) { Logger.getLogger(ActiveMQBase.class.getName()).log(Level.SEVERE, null, ex); } return null; } ActiveMQBase();  ActiveMQBase(String user, String password, String url);  ActiveMQBase(String user, String password); void setAmqpExceptionListener(AmqpExceptionListener amqpExceptionListener); Set<ActiveMQQueue> getQueues(); Set<ActiveMQTopic> getTopics(); void printQueueAndTopicInformation(); void close();  }### Answer:
@Test public void testGetTopics() { try { System.out.println("getTopics"); ActiveMQBase instance = new ActiveMQBaseImpl(); Set<ActiveMQTopic> result = instance.getTopics(); assert(result != null); } catch (Exception ex) { Logger.getLogger(ActiveMQBaseTest.class.getName()).log(Level.SEVERE, null, ex); } }