#Autowired not working inside testcontainers - spring-boot

Question

I am using test containers to make integration tests with the MSSQLServer image and when I am trying to inject my repository I am recieving the following error:
lateinit property modelRepository has not been initialized
And this confuse me because I'm using the same path I used to create the test but using a postgress database in another project.
My test archive:
package *.models.integration
import *.portadapter.repository.ModelRepository
import *.builders.ModelBuilder
import org.junit.ClassRule
import org.junit.Test
import org.junit.jupiter.api.Assertions.assertEquals
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase
import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest
import org.springframework.test.context.DynamicPropertyRegistry
import org.springframework.test.context.DynamicPropertySource
import org.testcontainers.containers.MSSQLServerContainer
import org.testcontainers.containers.startupcheck.MinimumDurationRunningStartupCheckStrategy
import org.testcontainers.junit.jupiter.Testcontainers
import java.time.Duration
import java.util.function.Supplier
#DataJpaTest
#Testcontainers
#AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
class ModelRepositoryTest {
#Autowired
private lateinit var modelRepository: ModelRepository
companion object {
private val hibernateDriver: Supplier<Any> = Supplier { "org.hibernate.dialect.SQLServerDialect" }
private val hibernateDll: Supplier<Any> = Supplier { "none" }
#ClassRule
#JvmField
val mssqlserver: MSSQLServerContainer<*> = MSSQLServerContainer("mcr.microsoft.com/mssql/server:2017-latest")
.withStartupCheckStrategy(MinimumDurationRunningStartupCheckStrategy(Duration.ofSeconds(5)))
.acceptLicense()
#JvmStatic
#DynamicPropertySource
fun properties(registry: DynamicPropertyRegistry) {
registry.add("spring.datasource.url", mssqlserver::getJdbcUrl)
registry.add("spring.datasource.username", mssqlserver::getUsername)
registry.add("spring.datasource.password", mssqlserver::getPassword)
registry.add("spring.jpa.properties.hibernate.dialect", hibernateDriver)
registry.add("spring.jpa.hibernate.ddl-auto", hibernateDll)
mssqlserver.acceptLicense().start()
}
}
#Test
fun `it should save a model`() {
val model = ModelBuilder().createModel().get()
modelRepository.save(model)
val modelFound = modelRepository.findByCode(model.code)
assertEquals(model.code, modelFound.get().code)
}
}
My Repository:
package *.portadapter.repository
import *.model.domain.Model
import org.springframework.data.jpa.repository.JpaRepository
import java.util.*
interface ModelRepository: JpaRepository<Model, String> {
fun findByCode(code: String): Optional<Model>
}
Could anyone please help me

Answer 1

Make sure you are using the right classes from junit4 or junit5. If you are using junit4 then add #RunWith(SpringRunner.class)
As I mentioned in the comment above, imports from junit4 and junit5 are mixed in the test provided. Below you can find the examples
junit4
import org.junit.ClassRule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.data.jdbc.DataJdbcTest;
import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.test.context.DynamicPropertyRegistry;
import org.springframework.test.context.DynamicPropertySource;
import org.springframework.test.context.junit4.SpringRunner;
import org.testcontainers.containers.MSSQLServerContainer;
import java.util.List;
import java.util.Map;
import static org.assertj.core.api.Assertions.assertThat;
#RunWith(SpringRunner.class)
#DataJdbcTest
#AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
public class SqlserverDemoApplication3Tests {
#ClassRule
public static MSSQLServerContainer sqlserver = new MSSQLServerContainer("mcr.microsoft.com/mssql/server:2017-CU12")
.acceptLicense();
#DynamicPropertySource
static void sqlserverProperties(DynamicPropertyRegistry registry) {
registry.add("spring.datasource.url", sqlserver::getJdbcUrl);
registry.add("spring.datasource.username", sqlserver::getUsername);
registry.add("spring.datasource.password", sqlserver::getPassword);
}
#Autowired
private JdbcTemplate jdbcTemplate;
#Test
public void contextLoads() {
this.jdbcTemplate.update("insert into profile (name) values ('profile-1')");
List<Map<String, Object>> records = this.jdbcTemplate.queryForList("select * from profile");
assertThat(records).hasSize(1);
}
}
junit5
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.data.jdbc.DataJdbcTest;
import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.test.context.DynamicPropertyRegistry;
import org.springframework.test.context.DynamicPropertySource;
import org.testcontainers.containers.MSSQLServerContainer;
import org.testcontainers.junit.jupiter.Container;
import org.testcontainers.junit.jupiter.Testcontainers;
import java.util.List;
import java.util.Map;
import static org.assertj.core.api.Assertions.assertThat;
#Testcontainers
#DataJdbcTest
#AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
class SqlserverDemoApplication2Tests {
#Container
private static MSSQLServerContainer sqlserver = new MSSQLServerContainer("mcr.microsoft.com/mssql/server:2017-CU12")
.acceptLicense();
#DynamicPropertySource
static void sqlserverProperties(DynamicPropertyRegistry registry) {
registry.add("spring.datasource.url", sqlserver::getJdbcUrl);
registry.add("spring.datasource.username", sqlserver::getUsername);
registry.add("spring.datasource.password", sqlserver::getPassword);
}
#Autowired
private JdbcTemplate jdbcTemplate;
#Test
void contextLoads() {
this.jdbcTemplate.update("insert into profile (name) values ('profile-1')");
List<Map<String, Object>> records = this.jdbcTemplate.queryForList("select * from profile");
assertThat(records).hasSize(1);
}
}