Spring Boot存储库在测试期间不工作

import javax.persistence.Entity;
import javax.persistence.Id;

@Entity
public class MyEntity {

    @Id
    private Long id;

    private String name;

    // getters and setters
}

import org.springframework.data.jpa.repository.JpaRepository;

public interface MyRepository extends JpaRepository<MyEntity, Long> {
}

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import org.springframework.transaction.annotation.Transactional;
import org.junit.jupiter.api.extension.ExtendWith;

import static org.assertj.core.api.Assertions.assertThat;

@SpringBootTest
@ExtendWith(SpringExtension.class)
@Transactional
public class RepositoryTest {

    @Autowired
    private MyRepository myRepository;

    @Test
    public void testFindById() {
        MyEntity entity = new MyEntity();
        entity.setName("Test Entity");
        myRepository.save(entity);

        MyEntity foundEntity = myRepository.findById(entity.getId()).orElse(null);
        assertThat(foundEntity).isNotNull();
        assertThat(foundEntity.getName()).isEqualTo("Test Entity");
    }
}