### Question:
NavigationLocationEngineUpdater { void removeLocationEngineListener() { locationEngine.removeLocationEngineListener(listener); } NavigationLocationEngineUpdater(LocationEngine locationEngine, NavigationLocationEngineListener listener);   }### Answer:
@Test public void removeLocationEngineListener() { LocationEngine locationEngine = mock(LocationEngine.class); NavigationLocationEngineListener listener = mock(NavigationLocationEngineListener.class); NavigationLocationEngineUpdater provider = new NavigationLocationEngineUpdater(locationEngine, listener); provider.removeLocationEngineListener(); verify(locationEngine).removeLocationEngineListener(eq(listener)); }