How to properly run spock test using testcontainers in spring boot - spock

Question

I have a spring boot app, with test written using spock and testcontainers (mysql). What I've made is working fine, but it doesn't feel right (f.e. becuase #sql goes for each test iteration so I have to use INSERT IGNORE ... in my sql script. I am also not happy about the trick with static and non-static mysqlcontainer).
I am a total beginner when it comes to testcontainers (and spock actually) so If some could tell me how to make it better using spock, #sql, datasource and testcontainers I would be grateful.
#SpringBootTest
#ContextConfiguration(initializers = Initializer.class)
#Testcontainers
class GeneratorTest extends Specification {
public static MySQLContainer staticMySQLContainer = new MySQLContainer()
.withDatabaseName("test")
.withUsername("test")
.withPassword("test")
#Shared
public MySQLContainer mySQLContainer = mySQLContainer;
static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
#Override
void initialize(#NotNull ConfigurableApplicationContext configurableApplicationContext) {
TestPropertyValues values = TestPropertyValues.of(
"spring.datasource.url=" + staticMySQLContainer.getJdbcUrl(),
"spring.datasource.password=" + staticMySQLContainer.getPassword(),
"spring.datasource.username=" + staticMySQLContainer.getUsername()
)
values.applyTo(configurableApplicationContext)
}
}
#Autowired
private CarService carService
#Autowired
private BikeRepository bikeRepository
#Sql("/testdata/insert_into_cars.sql")
def "validate number of doors"(int carId, int expectedNrOfDoors) {
given:
Car car = carService.getById(carId)
expect:
car.getNrOfDoors() == expectedNrOfDoors
where:
carId || expectedNrOfDoors
1 || 3
2 || 3
3 || 5
}
}
Updated (use of jdbc-based containers):
When it comes to JDBC-based containers I'm not sure If I set it up correctly. I've created application-test.properties in test/resources directory. I've put there:
spring.datasource.url=jdbc:tc:mysql:8.0.12://localhost:3306/shop?createDatabaseIfNotExist=true&serverTimezone=UTC
spring.datasource.username=test
spring.datasource.password=test
spring.datasource.driver-class-name=org.testcontainers.jdbc.ContainerDatabaseDriver
and my test class looks like:
#SpringBootTest
#Testcontainers
#TestPropertySource(locations="classpath:application-test.properties")
class GeneratorTest extends Specification {
#Autowired
private CarService carService
<skipped for brevity>
When I try to run the test class I'm keep getting:
2018-11-20 19:10:25.409 2612#DESKTOP-MLK30PF INFO --- [main] 🐳 [mysql:8.0.12].waitUntilContainerStarted : Waiting for database connection to become available at jdbc:mysql://192.168.99.100:32770/shop using query 'SELECT 1' (JdbcDatabaseContainer.java:128)
2018-11-20 19:12:25.420 2612#DESKTOP-MLK30PF ERROR --- [main] 🐳 [mysql:8.0.12].tryStart : Could not start container (GenericContainer.java:297)
org.rnorth.ducttape.TimeoutException: org.rnorth.ducttape.TimeoutException: java.util.concurrent.TimeoutException
at org.rnorth.ducttape.unreliables.Unreliables.retryUntilSuccess(Unreliables.java:53)
at org.testcontainers.containers.JdbcDatabaseContainer.waitUntilContainerStarted(JdbcDatabaseContainer.java:129)
at org.testcontainers.containers.GenericContainer.tryStart(GenericContainer.java:292)
followed by
2018-11-20 19:12:25.486 2612#DESKTOP-MLK30PF INFO --- [tc-okhttp-stream-242833949] 🐳 [mysql:8.0.12].accept : STDERR: 2018-11-20T18:10:44.918132Z 0 [System] [MY-010931] [Server] /usr/sbin/mysqld: ready for connections. Version: '8.0.12' socket: '/var/run/mysqld/mysqld.sock' port: 3306 MySQL Community Server - GPL. (Slf4jLogConsumer.java:32)
2018-11-20 19:12:25.487 2612#DESKTOP-MLK30PF INFO --- [main] 🐳 [mysql:8.0.12].tryStart : Creating container for image: mysql:8.0.12 (GenericContainer.java:253)
2018-11-20 19:12:25.609 2612#DESKTOP-MLK30PF INFO --- [main] 🐳 [mysql:8.0.12].tryStart : Starting container with ID: de75c9dafed8032b84cb827bf43a29c1964bfe4e168422272c9310a4803fd856 (GenericContainer.java:266)
2018-11-20 19:12:25.896 2612#DESKTOP-MLK30PF INFO --- [main] 🐳 [mysql:8.0.12].tryStart : Container mysql:8.0.12 is starting: de75c9dafed8032b84cb827bf43a29c1964bfe4e168422272c9310a4803fd856 (GenericContainer.java:273)
2018-11-20 19:12:25.901 2612#DESKTOP-MLK30PF INFO --- [main] 🐳 [mysql:8.0.12].waitUntilContainerStarted : Waiting for database connection to become available at jdbc:mysql://192.168.99.100:32772/shop using query 'SELECT 1' (JdbcDatabaseContainer.java:128)
for issues with mysql version 8 look here
UPDATE (solved):
As #bsideup pointed out jdbc-based containers is the best solution for this use case. It works perfectly fine as I decsribed above, but I had to change mysql version from 8 to lower.

Answer 1

Have you tried JDBC-based containers?

Answer 2

you can do
def setupSpec(){ //or use setup(){ if not a #Shared Container
System.getProperties()
.putAll([
"spring.datasource.url" : mySQLContainer...,
"spring.datasource.username": mySQLContainer...,
"spring.datasource.password": mySQLContainer...
])
}
then you can get rid of the staticMySQLContainer
and also the Initializer