### Question:
MessageBusStatus { public Long getPublishedMessagesPerMicroservice(String microservice) { return publishedMessagesPerMicroservice.get(microservice); } MessageBusStatus(); long getProcessedMessages(); Long getPublishedMessagesPerMicroservice(String microservice); Map<String, Long> getPublishedMessagesPerMicroservice(); MessageBusStatus increasePublishedMessagesPerMicroservice(String microservice); float getAverageSpeed(); MessageBusStatus setAverageSpeed(float averageSpeed); void removePublishedMessagesPerMicroservice(String microservice); String getJsonPublishedMessagesPerMicroservice();  }### Answer:
@Test public void testGetPublishedMessagesPerMicroservice() { assertEquals(0, messageBusStatus.getPublishedMessagesPerMicroservice().size()); assertEquals(1, messageBusStatus.increasePublishedMessagesPerMicroservice("microservice") .getPublishedMessagesPerMicroservice().size()); }