Spring boot test "No qualifying bean of type available"

Question

I'm quite a newbie to Spring boot, but here's the problem I'm facing now:

// Application.java public class Application {   public static void main(String[] args) {     SpringApplication.run(Application.class, args);   }    @Autowired   private Cluster cluster = null;    @PostConstruct   private void migrateCassandra() {     Database database = new Database(this.cluster, "foo");     MigrationTask migration = new MigrationTask(database, new MigrationRepository());     migration.migrate();   } } 

So basically, I'm trying to bootstrap a spring application, and after that, do some cassandra migrations.

I also have defined a repository for my user model:

// UserRepo.java public interface UserRepo extends CassandraRepository<User> { } 

Now I'm trying to test my repo class using the following simple test case:

// UserRepoTest.java @RunWith(SpringRunner.class) @AutoConfigureTestDatabase(replace = Replace.NONE) @DataJpaTest public class UserRepoTest {    @Autowired   private UserRepo userRepo = null;    @Autowired   private TestEntityManager entityManager = null;    @Test   public void findOne_whenUserExists_thenReturnUser() {     String id = UUID.randomUUID().toString();     User user = new User();     user.setId(id);     this.entityManager.persist(user);      assertEquals(this.userRepo.findOne(user.getId()).getId(), id);   }    @Test   public void findOne_whenUserNotExists_thenReturnNull() {     assertNull(this.userRepo.findOne(UUID.randomUUID().toString()));   } } 

I would expect the test to pass, but instead, I got an error saying "No qualifying bean of type 'com.datastax.driver.core.Cluster' available". It looks like spring failed to autowire the cluster object, but why is that? How do I fix this? Thanks a lot!

Answer 1

The test environment needs to know where your beans are defined, so you have to tell it the location.

In your test class, add the @ContextConfiguration annotation:

@RunWith(SpringRunner.class) @AutoConfigureTestDatabase(replace = Replace.NONE) @DataJpaTest @ContextConfiguration(classes = {YourBeans.class, MoreOfYourBeans.class}) public class UserRepoTest {    @Autowired   private UserRepo userRepo = null;    @Autowired   private TestEntityManager entityManager = null;