SpringBoot multiple datasources Junit test fails with H2 - spring-boot

Question

I have a springboot project which requests data from 2 datasources (2 MariaDB SQL databases) and I have successfully implemented it by creating 2 configuration classes for each DB and their respective Beans. My DB used by default is the User DB (#Primary annotation used in its config class).
I want to test my user repository layer by using an H2 database and for that, I have created a configuration class for this datasource and declared the datasource properties in my application-test.properties file.
The problem is when I run my tests, I have a BeanDefinitionOverrideException saying that there's a collision of my bean names for my 1th DB and H2 DB (a bean with this name already exist...) since they use the same JPA repository package.
How can I use H2 database for my tests and tell Spring to not load the beans for my 2 MariaDB datasources ?
**Configuration of the 1th DB :
**
#Configuration
#EnableJpaRepositories(
basePackages = "com.baeldung.multipledb.dao.user",
entityManagerFactoryRef = "userEntityManager",
transactionManagerRef = "userTransactionManager"
)
public class PersistenceUserConfiguration {
#Autowired
private Environment env;
#Bean
#Primary
public LocalContainerEntityManagerFactoryBean userEntityManager() {
LocalContainerEntityManagerFactoryBean em
= new LocalContainerEntityManagerFactoryBean();
em.setDataSource(userDataSource());
em.setPackagesToScan(
new String[] { "com.baeldung.multipledb.model.user" });
HibernateJpaVendorAdapter vendorAdapter
= new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
HashMap<String, Object> properties = new HashMap<>();
properties.put("hibernate.hbm2ddl.auto",
env.getProperty("hibernate.hbm2ddl.auto"));
properties.put("hibernate.dialect",
env.getProperty("hibernate.dialect"));
em.setJpaPropertyMap(properties);
return em;
}
#Primary
#Bean
public DataSource userDataSource() {
DriverManagerDataSource dataSource
= new DriverManagerDataSource();
dataSource.setDriverClassName(
env.getProperty("jdbc.driverClassName"));
dataSource.setUrl(env.getProperty("user.jdbc.url"));
dataSource.setUsername(env.getProperty("jdbc.user"));
dataSource.setPassword(env.getProperty("jdbc.pass"));
return dataSource;
}
#Primary
#Bean
public PlatformTransactionManager userTransactionManager() {
JpaTransactionManager transactionManager
= new JpaTransactionManager();
transactionManager.setEntityManagerFactory(
userEntityManager().getObject());
return transactionManager;
}
}
**Configuration of the 2nd DB :
**
#Configuration
#EnableJpaRepositories(
basePackages = "com.baeldung.multipledb.dao.product",
entityManagerFactoryRef = "productEntityManager",
transactionManagerRef = "productTransactionManager"
)
public class PersistenceProductConfiguration {
#Autowired
private Environment env;
#Bean
#Primary
public LocalContainerEntityManagerFactoryBean productEntityManager() {
LocalContainerEntityManagerFactoryBean em
= new LocalContainerEntityManagerFactoryBean();
em.setDataSource(productDataSource());
em.setPackagesToScan(
new String[] { "com.baeldung.multipledb.model.product" });
HibernateJpaVendorAdapter vendorAdapter
= new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
HashMap<String, Object> properties = new HashMap<>();
properties.put("hibernate.hbm2ddl.auto",
env.getProperty("hibernate.hbm2ddl.auto"));
properties.put("hibernate.dialect",
env.getProperty("hibernate.dialect"));
em.setJpaPropertyMap(properties);
return em;
}
#Primary
#Bean
public DataSource productDataSource() {
DriverManagerDataSource dataSource
= new DriverManagerDataSource();
dataSource.setDriverClassName(
env.getProperty("jdbc.driverClassName"));
dataSource.setUrl(env.getProperty("product.jdbc.url"));
dataSource.setproductname(env.getProperty("jdbc.product"));
dataSource.setPassword(env.getProperty("jdbc.pass"));
return dataSource;
}
#Primary
#Bean
public PlatformTransactionManager productTransactionManager() {
JpaTransactionManager transactionManager
= new JpaTransactionManager();
transactionManager.setEntityManagerFactory(
productEntityManager().getObject());
return transactionManager;
}
}
}
**Configuration of H2 DB for tests :
**
#Profile("test")
#Configuration
#EnableJpaRepositories(
basePackages = "com.baeldung.multipledb.dao.user",
entityManagerFactoryRef = "h2EntityManager",
transactionManagerRef = "h2TransactionManager"
)
public class PersistenceH2Configuration {
#Autowired
private Environment env;
#Bean
public LocalContainerEntityManagerFactoryBean h2EntityManager() {
LocalContainerEntityManagerFactoryBean em
= new LocalContainerEntityManagerFactoryBean();
em.setDataSource(h2DataSource());
em.setPackagesToScan(
new String[] { "com.baeldung.multipledb.model.user" });
HibernateJpaVendorAdapter vendorAdapter
= new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
HashMap<String, Object> properties = new HashMap<>();
properties.put("hibernate.hbm2ddl.auto",
env.getProperty("hibernate.hbm2ddl.auto"));
properties.put("hibernate.dialect",
env.getProperty("hibernate.dialect"));
em.setJpaPropertyMap(properties);
return em;
}
#Bean
public DataSource h2DataSource() {
DriverManagerDataSource dataSource
= new DriverManagerDataSource();
dataSource.setDriverClassName(
env.getProperty("jdbc.driverClassName"));
dataSource.setUrl(env.getProperty("h2.jdbc.url"));
dataSource.setUsername(env.getProperty("jdbc.h2"));
dataSource.setPassword(env.getProperty("jdbc.pass"));
return dataSource;
}
#Bean
public PlatformTransactionManager h2TransactionManager() {
JpaTransactionManager transactionManager
= new JpaTransactionManager();
transactionManager.setEntityManagerFactory(
h2EntityManager().getObject());
return transactionManager;
}
**My test class :
**
#ActiveProfile("test")
#SpringBootTest
#Transactional
#DirtiesContext(methodMode = MethodMode.AFTER_METHOD)
public class UserRepositoryTests {
#Autowired
#Qualifier("h2EntityManager")
private EntityManger manager;
#UserRepository
private UserRepository userRepo;
// my tests
}
I thought that by specifying a profile, it would work but my tests don't pass since it tries to use my user DB.
I also tried setting the value in my application-test.properties but with no success.
spring.main.allow-bean-definition-overriding=true