spring-boot Test JpaRepository is null - spring-boot

Question

I am trying to execute a JUnit test restful with spring boot application but it is wrong. But if I use a browser it's OK!
Help.
The Repository class:
package com.zhx.help.dao;
import com.zhx.help.model.Girl;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
import javax.transaction.Transactional;
import java.util.List;
#Repository
#Transactional
public interface GirlRepository extends JpaRepository<Girl,Integer> {
List<Girl> findByAge(Integer age);
}
Controller class
package com.zhx.help.controller;
import com.zhx.help.dao.GirlRepository;
import com.zhx.help.model.Girl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
#RestController
public class GirlController {
#Autowired
private GirlRepository girlRepository;
/**查询所有女生列表*/
#GetMapping(value = "/girls")
public List<Girl> girlList(){
return girlRepository.findAll();
}
The JUnit:
#RunWith(SpringRunner.class)
#SpringBootTest
#WebAppConfiguration
public class GirlControllerTest extends MockMvcResultHandlers {
private static Logger log = LoggerFactory.getLogger(GirlControllerTest.class);
//模拟对象
private MockMvc mvc;
#MockBean
private GirlRepository girlRepository;
#Before
public void setUp() {
mvc = MockMvcBuilders.standaloneSetup(new GirlController()).build();
}
#Test
public void girlList() throws Exception {
RequestBuilder request = MockMvcRequestBuilders.get("/girls");
mvc.perform(request).andExpect(status().isOk());
}
The code
https://github.com/longfeizheng/springboot-oracle.git

Answer 1

With your current approach you are basically rendering #SpringBootTest useless. You are loading everything and the first thing you do in the setup is basically discard all the results.
Either use the started context by autowiring the MockMvc or create a simple unit test using Mockito.
Using a preconfigured MockMVC
By simply adding #Autowired on your MockMvc field you should be able to get the prepared instance and you can simply remove your setup method.
#RunWith(SpringRunner.class)
#SpringBootTest
#WebAppConfiguration
public class GirlControllerTest {
private static Logger log = LoggerFactory.getLogger(GirlControllerTest.class);
//模拟对象
#Autowired
private MockMvc mvc;
#MockBean
private GirlRepository girlRepository;
#Test
public void girlList() throws Exception {
RequestBuilder request = MockMvcRequestBuilders.get("/girls");
mvc.perform(request).andExpect(status().isOk());
}
Create a simple Unit test instead of Integration test
Another option is to not load the whole context and simply directly use Mockito and the standaloneSetup you have now.
#RunWith(MockitoJUnitRunner.class)
public class GirlControllerTest {
private static Logger log = LoggerFactory.getLogger(GirlControllerTest.class);
//模拟对象
private MockMvc mvc;
#Mock
private GirlRepository girlRepository;
#InjectMocks
private GirlController girlController;
#Before
public void setUp() {
mvc = MockMvcBuilders.standaloneSetup(girlController).build();
}
#Test
public void girlList() throws Exception {
RequestBuilder request = MockMvcRequestBuilders.get("/girls");
mvc.perform(request).andExpect(status().isOk());
}
Either way will work and which you need/want depends on your needs and what you want (simply test the controller or make it a huge integration test).
Note: You are extending MockMvcResultHandlers don't extend that class just use static imports instead.

Answer 2

You should not create a controller object using new ..
You can do something like below:
#InjectMocks
private GirlController girlController;
mvc = MockMvcBuilders.standaloneSetup(girlController).build();
You can avoid mocking a repository class. Instead create a service class and mock it and access Repository class inside the service class