DatabaseService implements LocalService { @Override public Observable<User> observeLocalChange() { return mSubject; } DatabaseService(MVVMConverter<User, CacheUser> userConverter); @Override Observable<User> observeLocalChange(); @Override Observable<User> getUser(String id); @Override Observable<List<? extends User>> getUsers(); @Override Observable<Void> saveUser(User user); @Override Observable<Void> saveUsers(List<User> users); @Override Observable<Void> removeUser(String id); @Override Observable<Void> removeUsers(List<String> ids);  }
@Test public void testObserveLocalChange() throws Exception { }