Testing the MongoDB slice with Spring and Fongo

In our project we use the Gradle Build Tool and the Spring Framework to access a MongoDB.

For integration testing we decided to use Fongo. Let's add Fongo to the test dependencies first:

dependencies {
    testCompile "com.github.fakemongo:fongo:${fongoVersion}"
}

Next we override the Mongo bean in the profile fongo.

@ComponentScan
@Profile("fongo")
public class FongoConfiguration extends AbstractMongoConfiguration {

    @Override
    protected String getDatabaseName() {
    return "fongo-test-db";
    }

    @Override
    @Bean
    public Mongo mongo() throws Exception {
        return new Fongo("Fongo").getMongo();
    }

}

With this groundwork done it's easy to setup an integration test for our repository. We activate the profile fongo and the FongoConfiguration via annotations to our test classes.

@ActiveProfiles("fongo")
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {FongoConfiguration.class})
public class MyRepositoryTest {
    ....
}

When running the fongo tests you should be able to spot something like...

15:50:33.120 [main] DEBUG osdmc.MongoDbUtils - Getting Mongo Database name=[fongo-test-db]

in your logs.

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