Tests not working for multiple datasource with spring boot liquibase - spring-boot

Question

I am creating unittesting for spring boot application having multiple datasources. (Configuration is heavily inspired from this answer)
#Configuration
public class DatasourceConfig {
#Primary
#Bean
#ConfigurationProperties(prefix = "datasource.primary")
public DataSource primaryDataSource() {
return DataSourceBuilder.create().build();
}
#Bean
#ConfigurationProperties(prefix = "datasource.primary.liquibase")
public LiquibaseProperties primaryLiquibaseProperties() {
return new LiquibaseProperties();
}
#Bean
public SpringLiquibase primaryLiquibase() {
return springLiquibase(primaryDataSource(), primaryLiquibaseProperties());
}
#Bean
#ConfigurationProperties(prefix = "datasource.secondary")
public DataSource secondaryDataSource() {
return DataSourceBuilder.create().build();
}
#Bean
#ConfigurationProperties(prefix = "datasource.secondary.liquibase")
public LiquibaseProperties secondaryLiquibaseProperties() {
return new LiquibaseProperties();
}
#Bean
public SpringLiquibase secondaryLiquibase() {
return springLiquibase(secondaryDataSource(), secondaryLiquibaseProperties());
}
private static SpringLiquibase springLiquibase(DataSource dataSource, LiquibaseProperties properties) {
SpringLiquibase liquibase = new SpringLiquibase();
liquibase.setDataSource(dataSource);
liquibase.setChangeLog(properties.getChangeLog());
liquibase.setContexts(properties.getContexts());
liquibase.setDefaultSchema(properties.getDefaultSchema());
liquibase.setDropFirst(properties.isDropFirst());
liquibase.setShouldRun(properties.isEnabled());
liquibase.setLabels(properties.getLabels());
liquibase.setChangeLogParameters(properties.getParameters());
liquibase.setRollbackFile(properties.getRollbackFile());
return liquibase;
}
...
}
and
datasource:
primary:
url: jdbc:mysql://localhost/primary
username: username
password: password
liquibase:
change-log: classpath:/db/changelog/db.primary.changelog-master.xml
secondary:
url: jdbc:mysql://localhost/secondary
username: username
password: password
liquibase:
change-log: classpath:/db/changelog/db.secondary.changelog-master.xml
The application is running properly.
The problem is unit testing is failing with this configuration. I have used h2 as embedded DB. Added h2 as test dependency and added h2 in datasource URL as well in application.yaml for testing.
application.yaml for testing
management:
endpoints.web.exposure.include: "*"
security.enabled: false
spring:
zipkin:
discoveryClientEnabled: false
sender:
type: kafka
#type: web
liquibase:
enabled: false
datasource:
url: "jdbc:h2:mem:testdb"
jdbc-url: "jdbc:h2:mem:testdb"
username: sa
password:
secondary-datasource:
url: "jdbc:h2:mem:testdb"
jdbc-url: "jdbc:h2:mem:testdb"
username: sa
password:
datasource:
primary-liquibase:
liquibase:
url: "jdbc:h2:mem:testdb"
username: sa
password:
secondary-liquibase:
liquibase:
url: "jdbc:h2:mem:testdb"
username: sa
password:
liquibase:
enable: false
Unit testing file
package com.foo.bar.car;
import com.foo.bar.car.utils.KSUIDGenerator;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.springframework.boot.jdbc.EmbeddedDatabaseConnection;
import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
#SpringBootTest
#AutoConfigureMockMvc
#AutoConfigureTestDatabase
// https://stackoverflow.com/a/58786742/1534925
//#AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
//#AutoConfigureTestDatabase(connection = EmbeddedDatabaseConnection.H2)
class CarApplicationTests {
#Test
public void contextLoads() {
String h = "Hello World!";
Assertions.assertEquals(h, "Hello World!");
}
#Test
public void testKSUIDGeneration() {
Assertions.assertNotNull(KSUIDGenerator.generateKSUID());
}
}
I have created a repository to demonstrate this.
When I do gradlew clean check it gives me following error
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [liquibase.integration.spring.SpringLiquibase]: Factory method 'primaryLiquibase' threw exception; nested exception is java.lang.IllegalArgumentException: No visible constructors in class org.springframework.boot.test.autoconfigure.jdbc.TestDatabaseAutoConfiguration$EmbeddedDataSourceFactoryBean
Not sure what configuration change I am missing.

Answer 1

There are several adjustments to be done to make it work:
Exclude Autoconfiguration for DB and Liquibase in your CarApplication.java
#SpringBootApplication(exclude = { DataSourceAutoConfiguration.class,
LiquibaseAutoConfiguration.class })
Get rid of sping prefix in your configuration (both in app and test properties)
Add liquibase changelog location to test properties
Double check with the setup below in case it wont work after all listed above adjustments (I changed things here and there the way I usually code to make it comfortable to me):
CarApplication.java
#SpringBootApplication(exclude = { DataSourceAutoConfiguration.class,
LiquibaseAutoConfiguration.class })
public class CarApplication {
public static void main(String[] args) {
SpringApplication.run(CarApplication.class, args);
}
}
application.yaml
server:
port: 9999
datasource:
url: jdbc:postgresql://localhost:8888/foo
jdbcUrl: jdbc:postgresql://localhost:5432/foo
username: username
password: password
driverClassName: org.postgresql.Driver
liquibase:
change-log: classpath:db-changelog/primary.xml
secondary-datasource:
url: jdbc:postgresql://localhost:8888/bar
jdbcUrl: jdbc:postgresql://localhost:5432/bar
username: username
password: password
driverClassName: org.postgresql.Driver
liquibase:
change-log: classpath:db-changelog/secondary.xml
DatabaseConfig.java
#Configuration
public class DatabaseConfig {
#Bean
#Primary
#ConfigurationProperties(prefix = "datasource")
public DataSource primaryDataSource() {
return DataSourceBuilder.create().build();
}
#Bean
#ConfigurationProperties(prefix = "secondary-datasource")
public DataSource secondaryDataSource() {
return DataSourceBuilder.create().build();
}
#Bean
#ConfigurationProperties(prefix = "datasource.liquibase")
public LiquibaseProperties primaryLiquibaseProperties() {
return new LiquibaseProperties();
}
#Bean("liquibase")
public SpringLiquibase primaryLiquibase() {
return springLiquibase(primaryDataSource(), primaryLiquibaseProperties());
}
#Bean
#ConfigurationProperties(prefix = "secondary-datasource.liquibase")
public LiquibaseProperties secondaryLiquibaseProperties() {
return new LiquibaseProperties();
}
#Bean
public SpringLiquibase secondaryLiquibase() {
return springLiquibase(secondaryDataSource(), secondaryLiquibaseProperties());
}
private static SpringLiquibase springLiquibase(DataSource dataSource, LiquibaseProperties properties) {
SpringLiquibase liquibase = new SpringLiquibase();
liquibase.setDataSource(dataSource);
liquibase.setChangeLog(properties.getChangeLog());
liquibase.setContexts(properties.getContexts());
liquibase.setDefaultSchema(properties.getDefaultSchema());
liquibase.setDropFirst(properties.isDropFirst());
liquibase.setShouldRun(properties.isEnabled());
liquibase.setLabels(properties.getLabels());
liquibase.setChangeLogParameters(properties.getParameters());
liquibase.setRollbackFile(properties.getRollbackFile());
return liquibase;
}
}
test application.yaml
datasource:
url: "jdbc:h2:mem:testdb"
jdbc-url: "jdbc:h2:mem:testdb"
username: sa
password:
liquibase:
change-log: classpath:db-changelog/primary.xml
secondary-datasource:
url: "jdbc:h2:mem:testdb"
jdbc-url: "jdbc:h2:mem:testdb"
username: sa
password:
liquibase:
change-log: classpath:db-changelog/secondary.xml
CarApplicationTest.java
#SpringBootTest
class CarApplicationTests {
#Test
public void contextLoads() {
String h = "Hello World!";
Assertions.assertEquals(h, "Hello World!");
}
#Test
public void testKSUIDGeneration() {
Assertions.assertNotNull(KSUIDGenerator.generateKSUID());
}
}