@Transcational测试类会影响事务性服务层的工作方式
@Transcational测试类会影响事务性服务层的工作方式
提问于 2017-08-23 13:14:09
我正在为我的Spring boot app Rest控制器编写集成测试。
当我用@Transactional注释测试类时，它不会像预期的那样工作，当我删除注释时，它可以正常通过。
- 在测试类上使用
@Transactional是否意味着绝对不会向数据库中写入任何内容？我的其他测试运行得很好！他们或多或少做着同样的工作。它们写/更新/读，但这个测试测试一个删除端点。 - 如果使用@Transactional注释测试类意味着无法控制数据持久性，那么人们为什么还要在测试中使用它呢？我将实体管理器注入到测试类中，并调用了
flush和clear，它没有帮助。 - 即使数据没有写入数据库，它们也是持久化的，对吧？调用
repository.delete不应该从持久化上下文中删除该项吗？ - 不影响数据库(删除)的代码位于服务层。它是从我正在测试的控制器中调用的，而不是从测试类中调用的。无论测试类是否使用
@Transacational注释，我都希望它能正常工作。
注意：服务层为@Transactional
这是在服务层中，由控制器调用。它在测试中不叫form。
public void delete(long groupId, String username) {
Group group = this.loadById(groupId);
User user = userService.loadByUsername(username);
groupRepository.delete(groupId);
}编辑1个
测试失败的代码如下：
/*
* Deleting a group shouldn't delete the members of that group
*/
@Test
public void testDeleteGroupWithMembers() throws Exception {
Principal mockPrincipal = Mockito.mock(Principal.class);
Mockito.when(mockPrincipal.getName()).thenReturn(DUMMY_USERNAME);
User admin = userTestingUtil.createUser(DUMMY_USERNAME, DUMMY_USER_NAME, null, null);
Group group = groupTestingUtil.createGroup(DUMMY_GROUP_NAME, DUMMY_GROUP_DESCRIPTION, DUMMY_IMAGE_ID, admin);
User member = userTestingUtil.createUser("test1@test.test", "testUser1" , null, null);
group.addMember(member);
RequestBuilder requestBuilder = MockMvcRequestBuilders
.delete(GROUP_ENDPOINT_URL + group.getId())
.accept(MediaType.APPLICATION_JSON)
.contentType(MediaType.APPLICATION_JSON)
.principal(mockPrincipal);
MvcResult result = mockMvc.perform(requestBuilder).andReturn();
MockHttpServletResponse response = result.getResponse();
int status = response.getStatus();
String content = response.getContentAsString();
Assert.assertEquals("wrong response status", 200, status);
Assert.assertEquals("wrong response content", "", content);
//This test fails, as the group is not yet deleted from the repo
Assert.assertEquals("there should be no group left", 0, Lists.newArrayList(groupRepository.findAll()).size());
Assert.assertEquals("wrong number of users exist", 2, Lists.newArrayList(userRepository.findAll()).size());
Assert.assertTrue("admin shouldn't get deleted when deleting a group", userRepository.findById(admin.getId()) != null);
Assert.assertTrue("group members shouldn't get deleted when deleting a group", userRepository.findById(member.getId()) != null);
}在同一个测试类中工作的测试代码：
@Test
public void testCreateGroup() throws Exception {
Principal mockPrincipal = Mockito.mock(Principal.class);
Mockito.when(mockPrincipal.getName()).thenReturn(DUMMY_USERNAME);
User user = userTestingUtil.createUser(DUMMY_USERNAME, DUMMY_USER_NAME, null, null);
JSONObject jo = new JSONObject();
jo.put(NAME_FIELD_NAME, DUMMY_GROUP_NAME);
jo.put(DESCRIPTION_FIELD_NAME, DUMMY_GROUP_DESCRIPTION);
jo.put(IMAGE_FIELD_NAME, DUMMY_IMAGE);
String testGroupJson = jo.toString();
RequestBuilder requestBuilder = MockMvcRequestBuilders
.post(GROUP_ENDPOINT_URL).content(testGroupJson)
.accept(MediaType.APPLICATION_JSON)
.contentType(MediaType.APPLICATION_JSON)
.principal(mockPrincipal);
MvcResult result = mockMvc.perform(requestBuilder).andReturn();
MockHttpServletResponse response = result.getResponse();
int status = response.getStatus();
String content = response.getContentAsString();
List<Group> createdGroups = Lists.newArrayList(groupRepository.findAll());
Group createdGroup = createdGroups.get(0);
Assert.assertEquals("wrong response status", 200, status);
Assert.assertEquals("wrong response content", "", content);
Assert.assertEquals("wrong number of groups created", 1, createdGroups.size());
Assert.assertEquals("wrong group name", DUMMY_GROUP_NAME, createdGroup.getName());
Assert.assertEquals("wrong group description", DUMMY_GROUP_DESCRIPTION, createdGroup.getDescription());
Assert.assertEquals("wrong admin is assigned to the group", user.getId(), createdGroup.getAdmin().getId());
List<Group> groups = userTestingUtil.getOwnedGroups(user.getId());
Assert.assertEquals("wrong number of groups created for the admin", 1, groups.size());
Assert.assertEquals("wrong group is assigned to the admin", user.getOwnedGroups().get(0).getId(), createdGroup.getAdmin().getId());
Assert.assertTrue("image file was not created", CommonUtils.getImageFile(createdGroup.getImageId()).exists());
}在GroupService中创建和删除方法：
public void create(String groupName, String description, String image, String username) throws IOException {
User user = userService.loadByUsername(username);
Group group = new Group();
group.setAdmin(user);
group.setName(groupName);
group.setDescription(description);
String imageId = CommonUtils.decodeBase64AndSaveImage(image);
if (imageId != null) {
group.setImageId(imageId);
}
user.addOwnedGroup(group);
groupRepository.save(group);
logger.debug("Group with name " + group.getName() + " and id " + group.getId() + " was created");
}
public void delete(long groupId, String username) {
Group group = this.loadById(groupId);
User user = userService.loadByUsername(username);
validateAdminAccessToGroup(group, user);
groupRepository.delete(groupId);
logger.debug("Group with id " + groupId + " was deleted");
}rest控制器的代码：
/*
* Create a group
*/
@RequestMapping(path = "", method = RequestMethod.POST)
public void create(@RequestBody PostGroupDto groupDto, Principal principal, BindingResult result) throws IOException {
createGroupDtoValidator.validate(groupDto, result);
if (result.hasErrors()) {
throw new ValidationException(result.getFieldError().getCode());
}
groupService.create(groupDto.getName(), groupDto.getDescription(), groupDto.getImage(), principal.getName());
}
/*
* Delete a group
*/
@RequestMapping(path = "/{groupId}", method = RequestMethod.DELETE)
public void delete(@PathVariable long groupId, Principal principal) {
groupService.delete(groupId, principal.getName());
}编辑2
我尝试删除Group而不是User，但也不起作用。在相同的方法(组服务图层的delete方法)中，创建一个组可以，但删除不可以！
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/45831099
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