### Question:
ListenerConfig { public int getQueueSize() { return queueSize; }  void setQueueSize(int queueSize); String getStartTopic(); void setStartTopic(String startTopic); String getSuccessTopic(); void setSuccessTopic(String successTopic); String getFailTopic(); void setFailTopic(String failTopic); Map<String, String> getHeaders(); void setHeaders(Map<String, String> headers); String getSubject(); void setSubject(String subject); int getQueueSize(); String getTopic(); void setTopic(String topic); String getRegion(); void setRegion(String region);  }### Answer:
@Test public void defaultQueueSize() { assertThat(config.getQueueSize(), is(100)); }