Embedded Postgres for Spring Boot Tests

Question

I\'m building a Spring Boot app, backed by Postgres, using Flyway for database migrations. I\'ve been bumping up against issues where I cannot produce a migration that gener

Answer 1

Take a look at this: https://github.com/zonkyio/embedded-database-spring-test. Just to be clear, it's meant for integration testing. Meaning the Spring context is initialised during the individual test.

As per the tools documentation, all you need to do is to place @AutoConfigureEmbeddedDatabase annotation above class:

@RunWith(SpringRunner.class)
@AutoConfigureEmbeddedDatabase
@ContextConfiguration("/path/to/app-config.xml")
public class FlywayMigrationIntegrationTest {

    @Test
    @FlywayTest(locationsForMigrate = "test/db/migration")
    public void testMethod() {
        // method body...
    }
}

and add Maven dependency:

  io.zonky.test
  embedded-database-spring-test
  1.1.0
  test

To use it together with @DataJpaTest you need to disable the default test database by using the annotation @AutoConfigureTestDatabase(replace = NONE):

@RunWith(SpringRunner.class)
@AutoConfigureTestDatabase(replace = NONE)
@AutoConfigureEmbeddedDatabase
@DataJpaTest
public class SpringDataJpaTest {
// class body...
}

To make the use more comfortable you could also create a composite annotation, something like:

@Documented
@Inherited
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@AutoConfigureTestDatabase(replace = NONE)
@AutoConfigureEmbeddedDatabase
@DataJpaTest
public @interface PostgresDataJpaTest {
}

..and then use it above your test class:

@RunWith(SpringRunner.class)
@PostgresDataJpaTest // custom composite annotation
public class SpringDataJpaTest {
// class body...
}