Testing data repositories with Testcontainers
The first step when it comes to using Testcontainers is configuring the test case. To talk to a Postgres database, do this:
@Testcontainers
@DataJpaTest
@AutoConfigureTestDatabase(replace = Replace.NONE)
public class VideoRepositoryTestcontainersTest {
@Autowired VideoRepository repository;
@Container //
static final PostgreSQLContainer<?> database = //
new PostgreSQLContainer<>("postgres:9.6.12") //
.withUsername("postgres");
}
This framework for test cases can be described as follows:
@Testcontainers: The annotation from the Testcontainersjunit-jupitermodule that hooks into the life cycle of a JUnit 5 test case.@DataJpaTest: Spring Boot Test’s annotation we used in the previous section, indicating that all entity classes and Spring Data JPA repositories should be scanned.@AutoConfigureTestDatabase...
