Spring JUnit 5 ExtendWith TestContainer - spring-boot

Question

I'm trying to reutilize a container and I'm trying to use JUnit5 ExtendWith feature but I'm still getting:
Connection to localhost:5432 refused.
If I have the same logic inside each test everything works as expected.
#Testcontainers
#SpringBootTest
#ExtendWith({PostgresTestContainersExtension.class})
public class ApplicationJUnit5Test {
#Autowired
private HeroClassicJDBCRepository repositoryUnderTest;
#Test
public void test1() {
System.out.println("junit version: " + Version.id());
Collection<Hero> heroes = repositoryUnderTest.allHeros();
assertThat(heroes).hasSize(1);
repositoryUnderTest.addHero(new Hero("bb", "bb"));
Collection<Hero> heroesAfter = repositoryUnderTest.allHeros();
assertThat(heroesAfter).hasSize(2);
}
}
Extention:
public class PostgresTestContainersExtension implements BeforeAllCallback,
BeforeTestExecutionCallback {
private static final String IMAGE_NAME = "registry.mycomp.com/db/mariadb:10.4.11";
#DynamicPropertySource
static void properties(DynamicPropertyRegistry registry) {
registry.add("spring.datasource.url", container::getJdbcUrl);
registry.add("spring.datasource.password", container::getPassword);
registry.add("spring.datasource.username", container::getUsername);
}
#Container
public static PostgreSQLContainer container = new PostgreSQLContainer()
.withUsername("duke")
.withPassword("password")
.withDatabaseName("test");
#Override
public void beforeAll(ExtensionContext extensionContext) {
startContainerIfNeed();
}
#Override
public void beforeTestExecution(ExtensionContext extensionContext) {
startContainerIfNeed();
}
public void startContainerIfNeed() {
if (!container.isRunning()) {
container.start();
}
}
}

Answer 1

As far as I know #DynamicPropertySource can only be used in the test class itself or a superclass. You’ll have to move the properties method over.