how to use #DataJpaTest with multiple datasourse - spring-boot

Question

I tried to write integration test using annotation #DataJpaTest .
I have two datasource: Primary and secondary (class config)
in result i have an error:
expected single matching bean but found 2: primaryDataSource,secondary
then i tried to add a annotation
#AutoConfigureTestDatabase(replace= AutoConfigureTestDatabase.Replace.AUTO_CONFIGURED)
and With AUTO_CONFIGURED only DataSources configured by properties will be replaced but instead embedded h2 i saw Dialect : HHH000400: Using dialect: org.hibernate.dialect.Oracle10gDialect
how using #DataJpaTest with multiple datasources ?
public class DataSourcesConfig {
#Bean
#Primary
#ConfigurationProperties(prefix="spring.datasource")
public DataSource primaryDataSource() {
return DataSourceBuilder.create().build();
}
#Bean(name = "secondary")
#ConfigurationProperties(prefix="datasource.secondary")
public DataSource secondaryDataSource() {
return DataSourceBuilder.create().build();
}
}

Answer 1

I have a #Primary configuration class
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
basePackages = {"com.something"}
)
public class APrimaryDBDBConfiguration {
#Primary
#Bean
#ConfigurationProperties("spring.datasource")
public DataSourceProperties dataSourceProperties() {
return new DataSourceProperties();
}
#Primary
#Bean(name = "dataSource")
#ConfigurationProperties("spring.datasource.hikari")
public HikariDataSource dataSource() {
return dataSourceProperties()
.initializeDataSourceBuilder()
.type(HikariDataSource.class).build();
}
#Primary
#Bean(name = "entityManagerFactory")
#Profile("!test")
public LocalContainerEntityManagerFactoryBean entityManagerFactory(
EntityManagerFactoryBuilder builder,
#Qualifier("dataSource") DataSource dataSource) {
return builder
.dataSource(dataSource)
.packages("com")
.persistenceUnit("some_persistence_unit")
.build();
}
#Primary
#Bean(name = "transactionManager")
public PlatformTransactionManager transactionManager(
#Qualifier("entityManagerFactory") EntityManagerFactory entityManagerFactory) {
return new JpaTransactionManager(entityManagerFactory);
}
}
Later, in my repository test classes:
#RunWith(SpringRunner.class)
#DataJpaTest
#ActiveProfiles("test")
#Import(APrimaryDBDBConfiguration.class)
Finally, my test properties have:
spring.jpa.hibernate.ddl-auto=create-drop

Answer 2

Check if you have h2 database added as dependency in test scope. If not, add and try:
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>

Answer 3

Found a possible solution here.
Basically you manually configure the H2 database appropriately instead of letting Spring do it automatically.
Create an application.properties file in “src/test/resources” with the following content
# Let Spring autodetect the different SQL Dialects of each datasource
spring.jpa.database=default
# Generate the DB schema in the In-Memory H2 databases based on the JPA Entities
spring.jpa.generate-ddl=true
# H2 In-Memory Database "foo" (used in tests instead of a real PostgreSQL DB)
spring.datasource.url=jdbc:h2:mem:foo;DB_CLOSE_ON_EXIT=FALSE
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driver-class-name=org.h2.Driver
# H2 In-Memory Database "bar" (used in tests instead of a real PostgreSQL DB)
bar.datasource.url=jdbc:h2:mem:bar;DB_CLOSE_ON_EXIT=FALSE
bar.datasource.username=sa
bar.datasource.password=
bar.datasource.driver-class-name=org.h2.Driver