Spring test with @DataJpaTest can't autowire class with @Repository (but with interface repository works!)

Question

I'm trying to understand why I can't autowire a class repository but I can autowire a interface repository in the same package for the same test. The same repository works as expected when I start the application.

First, the error:

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.app.person.repository.PersonRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultPersonbleBeanFactory.raiseNoMatchingBeanFound(DefaultPersonbleBeanFactory.java:1493)
    at org.springframework.beans.factory.support.DefaultPersonbleBeanFactory.doResolveDependency(DefaultPersonbleBeanFactory.java:1104)
    at org.springframework.beans.factory.support.DefaultPersonbleBeanFactory.resolveDependency(DefaultPersonbleBeanFactory.java:1066)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
    ... 28 more

I have a very simple example. The test:

@RunWith(SpringRunner.class)
@DataJpaTest
public class PersonRepositoryTest {

    @Autowired
    private PersonRepository personRepository; // fail...

    @Autowired
    private PersonCrudRepository personCrudRepository; // works!

    @Test
    public void findOne() {
    }
}

The repository class:

@Repository
public class PersonRepository {
    //code
}

The repository interface:

@Repository
public interface PersonCrudRepository extends CrudRepository<Person, Long> {
}

After a bad experience with this same error, I'm trying to find some detail in my configuration or test what is responsible for this problem. Another possibility is the @DataJpaTest does not have support for class repositories.

Answer 1

I think I was right about the problem. After find a post on Github and read the Spring Documentation:

@DataJpaTest can be used if you want to test JPA applications. By default it will configure an in-memory embedded database, scan for @Entity classes and configure Spring Data JPA repositories. Regular @Component beans will not be loaded into the ApplicationContext.

My PersonRepository is considered a regular @Component, because it is not a Spring Data JPA repository (the interface is). So, it is not loaded.

The alternative solution is to use @SpringBootTest instead of @DataJpaTest.

The disadvantage with this solution is that will load all your context while running your test and, with this, disabling the test slicing. But do the job.

Another option, still using @DataJpaTest, is include a @Repository filter annotation, like this:

@DataJpaTest(includeFilters = @ComponentScan.Filter(type = FilterType.ANNOTATION, classes = Repository.class))