Best way to test JPA Spring 3.1 - spring

Question

I have written several JPA Repositories, Services and support classes for my Spring 3.1.1/JPA/Hibernate 4 web app. However, I really want to write some unit and integration tests for it (I know, you are supposed to write those first). I am using JavaConfig rather than XML, so I am wondering the best way to test. Here is the particular problem I am trying to solve:
I have a #Configuration that declares DataSource, JpaTransactionManager, LocalContainerEntityManagerFactoryBean, and all my respositories. Obviously I don't want to start all that up for an integration test, so I thought I could use the EmbeddedDatabase and H2 to create an in memory database, populate with values, and then use my Repositories against it. However, the documentation I have seen hasn't helped me put this together. I have this:
#RunWith( SpringJUnit4ClassRunner.class )
public class TestMenuService {
private EmbeddedDatabase database;
#Autowired
private MenuRepository menuRepository;
#Before
public void setUp() throws Exception {
database = new EmbeddedDatabaseBuilder().setType(EmbeddedDatabaseType.H2).setName("myschema")
.addScript("classpath:schema.sql").build();
menuRepository = new MenuRepository();
Assert.assertNotNull(database);
}
But the menuRepository does not get instantiated, so I tried creating a test version of my #Configuration
#Configuration } )
#ComponentScan( basePackages = { "com.mycompany.service"} )
#EnableTransactionManagement
#ImportResource( "classpath:applicationContext.xml" )
#PropertySource( "classpath:test-application.properties" )
public class TestEdmConfiguration {
#Bean
MenuRepository menuRepository() {
return new MenuRepository();
}
My test-applicationContext.xml
<jpa:repositories base-package="com.mycompany.servce.repository"/>
My test-application.properties:
db.driver=org.h2.Driver
db.username=sa
db.password=
db.url=jdbc:h2:mem:myschema
hibernate.dialect=org.hibernate.dialect.H2Dialect
hibernate.format_sql=true
hibernate.hbm2ddl.auto=create
hibernate.ejb.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy
hibernate.show_sql=true
But this requires that I create all the datasources, etc mentioned above. It seems like I am just duplicating all the support beans for this one.
Is there a way to have the reposository and embeddeddatabase isolated to my test without all the other dependencies?

Answer 1

If you want to test your repository in a full integration test I would image that you need everything else to be setup i.e. EntityManagerFactory, PlatformTransactionManager etc.
Since you are using Spring 3.1 I would suggest that you achieve this using bean profiles.
I would create two profiles one for tests and one for the application, each of which supplies a datasource.
#Configuration
#Profile("test")
public class EmbeddedDataSource {
#Bean
public DataSource dataSource() {
// Return a H2 datasource
}
}
#Configuration
#Profile("application")
public class ApplicationDataSource {
#Bean
public DataSource dataSource() {
// Return a normal datasource
}
}
The you can create a test which starts up the spring context as follows:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(loader = AnnotationConfigContextLoader.class, classes = { MyConfigClass.class })
#ActiveProfiles(profiles = {"test"})
#TransactionConfiguration(transactionManager = "transactionManager", defaultRollback = true)
public class TestRepository {
}
In here you can specify the profiles where are active for the test.