@Test
public void deleteAidMultipleNonEmptyTest() throws NoSuchFieldException, IllegalAccessException {

    addItem(AID_BASIC1, HASH_BASIC, RULE_BASIC);
    addItem(AID_BASIC, HASH_BASIC1, RULE_BASIC1);
    addItem(AID_BASIC, HASH_BASIC, RULE_BASIC);
    deleteAid(AID_BASIC);
    assertEquals("length after deletion", 1, getLength());
}