Error while testing: found multiple declaration of #BootstrapWith for test class - rest

Question

I would like to test my CRUD REST Controller for the first time. I have watched some videos and come up with this idea but I am getting error. I am using JPA with mySql. ITodoService is simple interface with CRUD methods. My rest Controller is working when I test it via Postman, so code there is ok.
If you could give me some feedback what might be wrong and where can I check for good imformation about testing REST app because I have spent like 3 hrs without any success :)
#SpringBootTest
#RunWith(SpringRunner.class)
#WebMvcTest
public class TodoFinalApplicationTests {
#Autowired
private MockMvc mockMvc;
#MockBean
private ITodosService iTodosService;
#Test
public void getAllTodosTest() throws Exception {
Mockito.when(iTodosService.findAll()).thenReturn(
Collections.emptyList()
);
MvcResult mvcResult = mockMvc.perform(
MockMvcRequestBuilders.get("/todos")
.accept(MediaType.APPLICATION_JSON)
).andReturn();
System.out.println(mvcResult.getResponse());
Mockito.verify(iTodosService.findAll());
}
}
Error message:
java.lang.IllegalStateException: Configuration error: found multiple declarations of #BootstrapWith for test class [com.damian.todo_Final.TodoFinalApplicationTests]: [#org.springframework.test.context.BootstrapWith(value=class org.springframework.boot.test.context.SpringBootTestContextBootstrapper), #org.springframework.test.context.BootstrapWith(value=class org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTestContextBootstrapper)]
EDIT:
This is code for whole CRUD REST Test
#RunWith(SpringRunner.class)
#AutoConfigureMockMvc
#SpringBootTest(classes = TodoFinalApplication.class, webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
// #WebMvcTest
public class TodoFinalApplicationTests {
#Autowired
private TestRestTemplate restTemplate;
#LocalServerPort
private int port;
private String getRootUrl() {
return "http://localhost:" + port;
}
#Test
public void contextLoads() {
}
#Test
public void getAllTodos() {
HttpHeaders headers = new HttpHeaders();
HttpEntity<String> entity = new HttpEntity<String>(null, headers);
ResponseEntity<String> response = restTemplate.exchange(getRootUrl() + "/employees",
HttpMethod.GET, entity, String.class);
assertNotNull(response.getBody());
}
#Test
public void createNewTodo() {
Todos todo = new Todos();
todo.setId(5);
todo.setTaskDate("15.01.1990");
todo.setTaskStatus(true);
todo.setTaskDescritpion("Description for testing");
ResponseEntity<Todos> postResponse = restTemplate.postForEntity(getRootUrl() + "/todos", todo, Todos.class);
assertNotNull(postResponse);
assertNotNull(postResponse.getBody());
}
#Test
public void testUpdateTodo() {
int id = 1;
Todos todo = restTemplate.getForObject(getRootUrl() + "/todos/" + id, Todos.class);
todo.setTaskDate("15.01.1990");
todo.setTaskStatus(true);
todo.setTaskDescritpion("Updating");
restTemplate.put(getRootUrl() + "/todos/" + id, todo);
Todos updatedTodo = restTemplate.getForObject(getRootUrl() + "/todos/" + id, Todos.class);
assertNotNull(updatedTodo);
}
#Test
public void testDeletedTodo() {
int id = 3;
Todos todo = restTemplate.getForObject(getRootUrl() + "/todos/" + id, Todos.class);
assertNotNull(todo);
restTemplate.delete(getRootUrl() + "/todos/" + id);
try {
todo = restTemplate.getForObject(getRootUrl() + "/todos/" + id, Todos.class);
} catch (final HttpClientErrorException e) {
assertEquals(e.getStatusCode(), HttpStatus.NOT_FOUND);
}
}

Answer 1

You have both #SpringBootTest and #WebMvcTest on one test class. Both classes, among others, specify only what beans should be instantiated in the test context.
The definitions are conflicting, so only one is allowed.
Decide if you want to test:
entire application context - use #SpringBootTest
only controllers - use #WebMvcTest
In your case, I would:
remove #SpringBootTest
specify Controller you want to test in #WebMvcTest
Alternatively, you can
remove #WebMvTest
add AutoConfigureWebMvc
#SpringBootTest brings all beans into context, and thus #WebMvcTest will likely result in a faster test.