### Question:
MessageBus implements IOFogModule { public MessageReceiver getReceiver(String receiver) { return receivers.get(receiver); } private  MessageBus(); @Override int getModuleIndex(); @Override String getModuleName(); static MessageBus getInstance(); synchronized void enableRealTimeReceiving(String receiver); synchronized void disableRealTimeReceiving(String receiver); void update(); void instanceConfigUpdated(); void startServer(); void start(); void stop(); MessagePublisher getPublisher(String publisher); MessageReceiver getReceiver(String receiver); synchronized String getNextId(); synchronized Map<String, Route> getRoutes();  }### Answer:
@Test (timeout = 100000L) public void testGetReceiver() { initiateMockStart(); assertNull(messageBus.getReceiver(receiverValue)); }