ITStormRepo.java

@SpringJUnitConfig
@ContextConfiguration(classes = { StormTrackerApplication.class }, initializers = ITStormRepo.Initializer.class)
@TestPropertySource("classpath:application.properties")
@TestMethodOrder(OrderAnnotation.class)
public class ITStormRepo {

	public static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
		@Override
		public void initialize(ConfigurableApplicationContext applicationContext) {
			TestPropertyValues.of("spring.datasource.url=jdbc:tc:postgresql:11.2://arbitrary/arbitrary", //
					"spring.datasource.username=test", //
					"spring.datasource.password=test", //
					"spring.datasource.driver-class-name=org.testcontainers.jdbc.ContainerDatabaseDriver")//
					.applyTo(applicationContext);
		}
	}

	@Autowired
	private StormRepo repo;

	@Test
	@Order(1)
	public void testReadFromStormsTable() {
		assertThat(repo.count()).isEqualTo(2);
	}

	@Test
	public void testWriteToStormsTable() {
		Storm savedStorm = repo.save(new Storm("03-17-2019", "03-20-2019", "South Atlantic", "Knoxville, Tennesee",
				"Tropical Depression", 3));
		assertThat(savedStorm.getId()).isEqualTo(12);
	}
}