maven springboot test not running integration tests with specific datasource bean

Question

I have been struggling for a couple of days with spring testing. We are using maven-failsafe-plugin and using docker containers for our two specific databases.

But when we include the non-primary datasource configuration, no tests are run.

So config is (docker-maven-plugin sets the ip/host system properties for us):

metadata:
  datasource:
    url: jdbc:mariadb://${docker.mariadb.ip}:${docker.mariadb.port}/METADATA
    password: m_user
    username: m_pswd

reporting:
  datasource:
    jdbcUrl: jdbc:vertica://${docker.vertica.ip}:${docker.vertica.port}/REPORTING?allowMultiQueries=true
    username: v_user
    password: v_pswd

We have two database configuration classes.

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
        entityManagerFactoryRef = "entityManagerFactory",
        basePackages = {"com.company.application"}
)
public class MariadbConfiguration {

    @Bean
    @Primary
    @ConfigurationProperties(prefix = "metadata.datasource")
    public DataSourceProperties reportingDataSourceProperties() {
        return new DataSourceProperties();
    }


    @Primary
    @Bean(name = "dataSource")
    @ConfigurationProperties(prefix = "metadata.datasource")
    public HikariDataSource dataSource(DataSourceProperties mariadbDataSourceProperties) {
        return (HikariDataSource) mariadbDataSourceProperties.initializeDataSourceBuilder()
                .type(HikariDataSource.class).build();
    }

    @Primary
    @Bean(name = "entityManagerFactory")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder, @Qualifier("dataSource") DataSource dataSource) {
        ...
    }

    @Primary
    @Bean(name = "transactionManager")
    public PlatformTransactionManager transactionManager(@Qualifier("entityManagerFactory")
            EntityManagerFactory entityManagerFactory) {
        return new JpaTransactionManager(entityManagerFactory);
    }

    @Primary
    @Bean(name = "transactionTemplate")
    public TransactionTemplate transactionTemplate(@Qualifier("transactionManager")
            PlatformTransactionManager transactionManager) {
        return new TransactionTemplate(transactionManager);
    }
}

And

@Configuration
public class VerticaConfiguration {

    @Bean("verticaDataSourceProperties")
    @ConfigurationProperties(prefix = "reporting.datasource")
    public DataSourceProperties verticaDataSourceProperties() {
        return new DataSourceProperties();
    }

    @Bean(name = "verticaDataSource")
    @ConfigurationProperties(prefix = "reporting.datasource")
    public HikariDataSource verticaDataSource() {
        return (HikariDataSource) verticaDataSourceProperties().initializeDataSourceBuilder()
                .type(HikariDataSource.class).build();
    }

    @Bean(name = "verticaJdbcTemplate")
    public JdbcTemplate verticaJdbcTemplate() {
        return new JdbcTemplate(verticaDataSource());
    }
}

So our test class is:

@RunWith(SpringRunner.class)
@ActiveProfiles("itest")
@ContextConfiguration(classes={MariadbConfiguration.class, VerticaConfiguration.class})
@AutoConfigureTestDatabase(replace=AutoConfigureTestDatabase.Replace.NONE)
@DataJpaTest
public class ApplicationIT {

    @Autowired
    DataSource mariadb;

    @Qualifier("verticaDataSource")
    @Autowired
    DataSource vertica;
    
    @Test
    public void testApplicationLoaded() {}

}

So if we mvn verify this no tests are run

[INFO] --- maven-failsafe-plugin:2.22.2:integration-test (default) @ our-application ---
[INFO] 
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] 
[INFO] Results:
[INFO] 
[INFO] Tests run: 0, Failures: 0, Errors: 0, Skipped: 0

BUT if we change the @ContextConfigutation to not include vertica

@ContextConfiguration(classes={MariadbConfiguration.class})

Then the test runs (and fails with bean initiasation error as expected)

[INFO] --- maven-failsafe-plugin:2.22.2:integration-test (default) @ our-application ---
[INFO] 
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
...
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 4.81 s <<< FAILURE! - in com.company.application.test.ApplicationIT
[ERROR] testApplicationLoaded  Time elapsed: 0.001 s  <<< ERROR!
org.springframework.beans.factory.UnsatisfiedDependencyException: ...
...
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0

If we change the @ContextConfigutation to not include mariadb

@ContextConfiguration(classes={VerticaConfiguration.class})

Then no tests are run.

Just to be clear, I am not asking about the error.

The question is why does including the VerticaConfiguration.class mean no tests are run? Seems very weird. Application itself is fine, this is just a testing issue.

Versions:

• java: 8
• spring boot: 2.2.6
• spring framework: 5.2.5
• junit: 4.12

Part of our problem is we kind of inherited this project. So we use spring without properly understanding how it all hangs together.