NoStorage implements IDataStorage<T> { @Override public T loadData(long id) { return null; }  @Override boolean dataExists(long id); @Override T loadData(long id); @Override boolean saveData(T data); @Override boolean dataIsStorable(T data); @Override boolean deleteData(T data);  }
@Test public void testLoadData() { NoStorage<StoreImage> uut = new NoStorage<>(); assertNull(uut.loadData(image.getId())); }