Testcontainers | Postgres / Postgis with Spring and Spock

@SpringBootTest
@AutoConfigureMockMvc
@AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
@ContextConfiguration(initializers = [Initializer.class])
class FieldControllerTest extends IntegrationTest {

  @Shared
  public static JdbcDatabaseContainer postgreSQLContainer = new PostgisContainerProvider()
    .newInstance()
    .withDatabaseName("integration-tests-db")
    .withUsername("sa")
    .withPassword("sa");


  static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {

    void initialize(ConfigurableApplicationContext configurableApplicationContext) {
      postgreSQLContainer.start()
      TestPropertyValues.of(
        "spring.datasource.url=" + postgreSQLContainer.getJdbcUrl(),
        "spring.datasource.username=" + postgreSQLContainer.getUsername(),
        "spring.datasource.password=" + postgreSQLContainer.getPassword()
      ).applyTo(configurableApplicationContext.getEnvironment());
    }
  }

  @Autowired
  MockMvc mockMvc

  @Autowired
  FieldRepository fieldRepository

  void setup() {
    fieldRepository.save(new Field(
      UUID.fromString('ad68f894-c16b-4953-b577-7cddb3e85ae5'), "initSampleField",
      new Polygon(
        PositionSequenceBuilders.variableSized(G2D.class)
          .add(5.8208837124389, 51.0596004663904)
          .add(5.83490292265498, 51.0571257015788)
          .add(5.87078646658134, 51.0451607414904)
          .add(5.79146302423308, 51.0612386272784)
          .add(5.8208837124389, 51.0596004663904)
          .toPositionSequence(),
        CoordinateReferenceSystems.WGS84
      )
    ))
  }

  ...
}

dependencyManagement {
  imports {
    mavenBom "org.testcontainers:testcontainers-bom:${testcontainersVersion}"
  }
}

dependencies {
  ...
  
  testImplementation "org.testcontainers:spock:1.17.5"
  testImplementation "org.testcontainers:postgresql:1.17.5"
}