repository always null after initilization of testing containers - mockito

Question

I am attempting to use TestingContainers. I was able to get it to run but my tests are always null. I am trying to avoid mocking but rather having real data.
Repository
#Sql("classpath:data.sql")
class OrderDataRepositoryTest extends AbstractTestConfiguration {
//#Mock
#MockBean
//#Autowired
private OrderDataRepository orderRepository;
private AutoCloseable closeable;
#BeforeEach
public void init() {
closeable = MockitoAnnotations.openMocks(this);
}
#AfterEach
void closeService() throws Exception {
closeable.close();
}
#Test
void getAllUsersTest() {
List<Order> orders = orderRepository.findAll();
orders.toString();
}
}
config
#AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
#Testcontainers
public abstract class AbstractTestConfiguration {
#Container
private MySQLContainer database = new MySQLContainer("mysql:8.0");
#Test
public void test() {
assertTrue(database.isRunning());
}
}
main
#SpringBootTest
#Sql("classpath:init.sql")
#TestPropertySource("classpath:application-test.yml")
class TentingContainerApplicationTests {
}
application.properties
spring:
application:
datasource:
url: jdbc:mysql:8.0:///test?TC_INITSCRIPT=file:src/main/resources/init.sql
driver-class-name: com.mysql.jdbc.Driver
The commented out
//#Mock
#MockBean
//#Autowired
is what I tried. Of course mock works out but I want real data for the #services and #repository classes.
advice?

Answer 1

If you want to test your database-related code in isolation (I assume you're using Spring Data JPA) then #DataJpaTest fits perfectly.
This annotation will create a sliced Spring context for you that contains only persistence relevant beans like: DataSource, EntityManager, YourRepository. This doesn't include your service classes, your #Component classes, or #RestController.
By default, this annotation tries to configure an embedded in-memory database as the DataSource. We can override this (and you already did with some of your code examples) behavior to use Testcontainers:
#DataJpaTest
#Testcontainers
#AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
class OrderDataRepositoryTest {
#Container
static MySQLContainer database = new MySQLContainer("mysql:8.0");
#DynamicPropertySource
static void setDatasourceProperties(DynamicPropertyRegistry propertyRegistry) {
propertyRegistry.add("spring.datasource.url", database::getJdbcUrl);
propertyRegistry.add("spring.datasource.password", database::getPassword);
propertyRegistry.add("spring.datasource.username", database::getUsername);
}
#Autowired
private OrderDataRepository orderRepository;
#Test
void shouldReturnOrders() {
}
}
If you want to write another test that includes all your beans and also starts the embedded servlet container, take a look at #SpringBootTest for writing integration tests.
#SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
#Testcontainers
class MyIntegrationTest {
#Container
static MySQLContainer database = new MySQLContainer("mysql:8.0");
#DynamicPropertySource
static void setDatasourceProperties(DynamicPropertyRegistry propertyRegistry) {
propertyRegistry.add("spring.datasource.url", database::getJdbcUrl);
propertyRegistry.add("spring.datasource.password", database::getPassword);
propertyRegistry.add("spring.datasource.username", database::getUsername);
}
#Autowired
private ServiceA serviceA;
#Autowired
private OrderDataRepository orderDataRepository;
}
When working with a Spring TestContext for your test and Mockito, make sure to understand the difference between #Mock and #MockBean.