Configure specific in memory database for testing purpose in Spring

Question

How do I configure my Spring Boot application so that when I run unit tests it will use in-memory database such as H2/HSQL but when I run Spring Boot application it will use

Answer 1

Another approach is to add the annotation @AutoConfigureTestDatabase to you test class. My tests usually look like this:

@RunWith(SpringRunner.class)
@DataJpaTest
@AutoConfigureTestDatabase(connection = EmbeddedDatabaseConnection.H2)
public class MyRepositoryTest {

    @Autowired
    MyRepository repository;

    @Test
    public void test() throws Exception {
        // Tests...
    }
}

Note that the embedded database dependency needs to be added in the pom.xml file. For embedded database this annotation is not necessary it will work even if only the dependency is added in pom file.