Datenbankabfragen mit dem DataJpaTest-Slice überprüfen

@DataJpaTest
class UserRepositoryTest {
 
    @Autowired
    private UserRepository userRepository;
 
    @Test
    void shouldFindUserByEmail() {
        User user = new User("[email protected]");
        userRepository.save(user);
 
        Optional<User> found = userRepository.findByEmail("[email protected]");
        assertTrue(found.isPresent());
    }
}