首先我是Spring+Hibernate开发的新手。遵循大量教程书籍,我已经基于标准创建了一个主要基于 Spring、Hibernate 的示例应用程序,我已经开始为 Repository (DAO) 方法编写一些测试用例,例如 find、findAll、save、delete。
当我执行测试类时,并不是所有的测试用例都为 ex 正确执行,这真的很疯狂。特别是 find 和 findAll 方法。但是当单独运行它们时,它们完美地通过了。
实体
@Entity
@Table(name = "client_master")
public class ClientMaster {
private Long id;
private Long version;
private Date dateCreated;
private Date lastUpdated;
private String clientName;
private List<ProjectMaster> projectMaster;
@Id
@GeneratedValue
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Version
@Column(name = "version")
public Long getVersion() {
return version;
}
public void setVersion(Long version) {
this.version = version;
}
@Column(name = "client_name", nullable= false,unique= true)
public String getClientName() {
return clientName;
}
public void setClientName(String clientName) {
this.clientName = clientName;
}
@OneToMany(targetEntity = ProjectMaster.class, mappedBy = "lientMaster", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
public List<ProjectMaster> getProjectMaster() {
return projectMaster;
}
public void setProjectMaster(List<ProjectMaster> ProjectMaster) {
this.projectMaster = projectMaster;
}
@Column(name = "date_created" , nullable= false)
@Temporal(TemporalType.TIMESTAMP)
public Date getDateCreated() {
return dateCreated;
}
public void setDateCreated(Date dateCreated) {
this.dateCreated = dateCreated;
}
@Column(name = "last_updated")
@Temporal(TemporalType.TIMESTAMP)
public Date getLastUpdated() {
return lastUpdated;
}
public void setLastUpdated(Date lastUpdated) {
this.lastUpdated = lastUpdated;
}
}
存储库
import java.util.List;
import javax.persistence.EntityNotFoundException;
import org.hibernate.Query;
@Repository("clientMasterRepo")
@Transactional
public class ClientMasterRepoHibernate implements ClientMasterRepository {
@Autowired
private SessionFactory sessionFactory;
@Override
public ClientMaster find(Long id) {
// Based on the Hibernate currentsession get the ClientMaster Object based on Id
ClientMaster clientMaster = (ClientMaster) sessionFactory.getCurrentSession().get(ClientMaster.class, id);
return clientMaster;
}
@Override
public List<ClientMaster> findAll() {
// Get all the ClientMaster records.
Query query = sessionFactory.getCurrentSession().createQuery("FROM ClientMaster");
List<ClientMaster> clientMasterList = query.list();
return clientMasterList;
}
@Override
public ClientMaster save(ClientMaster clientMaster) {
// Insert or Update the ClientMaster object
sessionFactory.getCurrentSession().saveOrUpdate(clientMaster);
return CclientMaster;
}
@Override
public void delete(ClientMaster clientMaster) {
// Delete the ClientMaster object
sessionFactory.getCurrentSession().delete(clientMaster);
}
}
JUnit 测试
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"file:src/main/resources/META-INF/spring/spring-master.xml"})
public class ClientMasterRepositoryTests {
@Autowired
private ClientMasterRepository clientMasterRepository;
private List<ClientMaster> ClientMasterList;
@Before
public void setup(){
// Initialize ClientMaster mock objects for testing
ClientMasterList = new ArrayList<ClientMaster>();
ClientMaster client1 = new ClientMaster();
client1.setClientName("Client1");
client1.setDateCreated(new Date());
client1.setLastUpdated(new Date());
ClientMaster client2 = new ClientMaster();
client2.setClientName("Client2");
client2.setDateCreated(new Date());
client2.setLastUpdated(new Date());
ClientMaster client3 = new ClientMaster();
client3.setClientName("Client3");
client3.setDateCreated(new Date());
client3.setLastUpdated(new Date());
ClientMaster client4 = new ClientMaster();
client4.setClientName("Client4");
client4.setDateCreated(new Date());
client4.setLastUpdated(new Date());
ClientMasterList.add(client1);
ClientMasterList.add(client2);
ClientMasterList.add(client3);
ClientMasterList.add(client4);
}
@Test
public void testSave(){
for (Iterator iterator = ClientMasterList.iterator(); iterator.hasNext();) {
ClientMaster ClientMaster = (ClientMaster) iterator.next();
// insert the ClientMaster object
clientMasterRepository.save(ClientMaster);
assertTrue(ClientMaster.getClientName()+" is saved - Id "+ClientMaster.getId(),ClientMaster.getId() > 0);
}
}
@Test
public void testUpdate(){
// get a ClientMaster object from the repository
ClientMaster clientMasterObj = clientMasterRepository.find(1L);
// assert if its not null
assertTrue(!clientMasterObj.getClientName().isEmpty());
// change the client name
clientMasterObj.setClientName("Client1-Changed");
// update the ClientMaster object
clientMasterRepository.save(clientMasterObj);
// assert the value changed id true
assertEquals("Client1-Changed", clientMasterRepository.find(1L).getClientName());
}
@Test
public void testDelete(){
// get a CASClientMaster object from the repository
ClientMaster clientMasterObjBeforeDel = clientMasterRepository.find(2L);
// delete the ClientMaster object
clientMasterRepository.delete(clientMasterObjBeforeDel);
// get a ClientMaster object from the repository
ClientMaster clientMasterObjAfterDel = clientMasterRepository.find(2L);
// get the ClientMaster object ID
assertNull(clientMasterObjAfterDel);
}
@Test
public void testFind(){
// get a ClientMaster object from the repository
ClientMaster clientMasterObj = clientMasterRepository.find(3L);
// compare the id's of passed and retrieved objects.
assertThat(clientMasterObj.getId(), is(3L));
assertTrue(clientMasterObj.getId() == 3);
}
@Test
public void testFindAll(){
// get all ClientMaster object from the repository
List<ClientMaster> ClientMasterList = clientMasterRepository.findAll();
// check if it returns all records from DB
assertTrue(ClientMasterList.size() > 0);
assertThat(ClientMasterList.size(), is(4));
}
}
当我完全执行上述所有测试用例时,find 和 findAll 测试用例将失败,但当单独执行这些测试用例时通过。我是测试框架的新手。让我知道上述测试存储库层的方法是否有任何问题。
更新
即使更新测试用例在某些执行中表现异常,但在某些执行正常时,当我使用 find 方法获取 clientMaster 对象时,它会给出错误“NullPointerException”。
最佳答案
您的测试不会自动重置持久化数据。有几个替代方案可以解决或解决这个问题:
1.将 @Transactional
注释添加到测试中。
事务测试在测试完成后回滚的事务中运行,清除测试保留的任何状态。但是,添加 @Transactional
可能会隐藏一些错误。参见 this article about it .
2。创建一个 @After
方法来清除任何持久的更改
这可能维护起来很麻烦,因为您需要跟踪测试持续存在的所有内容。一种稍微复杂但可维护的方法是在运行测试之前转储数据库,然后在每次测试后从该转储中恢复它。
3。以一种即使数据库已经包含某些东西也不会中断的方式实现测试。
例子:
@Test
public void testEntityGetsPersisted() {
int countBefore = getCurrentCountOfEntities();
persistNewEntity();
int countAfter = getCurrentCountOfEntities();
assertTrue(countAfter == countBefore + 1);
}
关于java - 使用 jUnit 进行 Spring Hibernate 存储库测试,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29682969/