Transcational测试类影响事务性服务层的工作方式是什么？
我正在为我的Springboot应用程序REST控制器编写集成测试。
当我用@Transactional它不像预期的那样工作，当我删除注释时，它传递得很好。
- 使用
@Transactional在测试类上意味着绝对没有任何东西被写入数据库？他们做的工作差不多是一样的。它们是写/更新/读的，但是这个测试测试一个删除端点。 - 如果用@Transaction注释测试类意味着没有对数据持久性的控制，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测试类并调用
flush和clear，这没什么用。 - 即使数据没有写入数据库，它们也会被持久化，对吗？不调用
repository.delete应该从持久性上下文中删除该项吗？ - 不影响db(DELETE)的代码位于服务层。我正在测试的是从Controller内部调用的，而不是测试类。我期望它能够工作，而不管测试类是用
@Transacational或者不是。
注服务层是@Transactional
这是在服务层，并由控制器调用。它不在测试中称为表单。
public void delete(long groupId, String username) {
Group group = this.loadById(groupId);
User user = userService.loadByUsername(username);
groupRepository.delete(groupId);
}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());
}控件中的创建和删除方法GroupService*
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());
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