JUnit to retrieve value from database to test criteria - junit5

Question

How do I write JUnit with actual service/repository call to retrieve data from a database table instead of using a mock service/repository?
Here the below code returns an empty list of object, whereas I am expecting few hundred objects. findAll() is a simple method for which I am trying to write JUnit but later on I will be writing JUnit for a method which takes Map as JSON from request parameters and forms a criteria API so in this case, I would like to test
Request
Parsing of the request in Controller(what controller receives)
And forming the SQL Criteria and returned object and that's the reason I don't want to mock service/repository.
I am using Spring Boot Rest Controller and for Unit Testing, I am using Mocikito and JUnit.
#ActiveProfiles("test")
#RunWith(SpringRunner.class)
#WebMvcTest(CaDetailController.class)
public class CaDetailControllerTest {
private static ObjectMapper objectMapper = null;
private List<CaDetail> caDetails;
#Autowired
private MockMvc controller;
#MockBean
CaDetailRepository repository;
#BeforeClass
public static void beforeClass() {
objectMapper = new ObjectMapper();
}
#Before
public void before() {
caDetails = new ArrayList<CaDetail>();
}
#After
public void after() {
caDetails = new ArrayList<CaDetail>();
}
#AfterClass
public static void afterClass() {
objectMapper = null;
}
#Test
public void getCorporateActions() throws Exception {
MvcResult result = controller.perform(MockMvcRequestBuilders.get("/api/ca").accept(MediaType.APPLICATION_JSON)).andReturn();
caDetails = objectMapper.readValue(result.getResponse().getContentAsByteArray(), new TypeReference<List<CaDetail>>() {
});
System.out.println(">>>>>>>>>>>>>>> caDetails : " + caDetails);
assertNotNull(caDetails);
assertTrue(caDetails.size() > 0);
}

Answer 1

You need to write integration test for your services which will directly communicate with database. For example go through this link.
http://www.springboottutorial.com/integration-testing-for-spring-boot-rest-services