### Question:
GanderIMDB implements GanderStorage { public static GanderIMDB getInstance() { return INSTANCE; } private  GanderIMDB(); static GanderIMDB getInstance(); @Override TransactionDao getTransactionDao();  }### Answer:
@Test public void getInstance_shouldReturnSingleton() { assertThat(GanderIMDB.getInstance()).isEqualTo(GanderIMDB.getInstance()); }