source: class ObservableMapTest {
  
      private int fired;
      private final UuidUtils uuidUtils;
      @Mock Mache<String, String> cache;
      @Mock MQFactory<String> mqFactory;
  
      @Test
      public void testPut() throws Exception {
  
target:         ObservableMap<String, String> observable = new ObservableMap<>(mqFactory, cache, uuidUtils);
          observable.registerListener(event -> fired++);
  
          observable.get("a");
          assertEquals(0, fired);
      }
  
  }