@Test
public void testFindUsersByUsername() throws Exception {

    List<Users> list = usersJdbcRepository.findUsersByUsername("user");
    assertNotNull(list);
    assertTrue(list.isEmpty());
    list = usersJdbcRepository.findUsersByUsername("");
    assertNotNull(list);
    assertTrue(list.isEmpty());
    list = usersJdbcRepository.findUsersByUsername(null);
    assertNotNull(list);
    assertTrue(list.isEmpty());
}