hey guys! is it any tutorial how to use integration tests with test containers in ktor?

Do you mean the Testcontainers library?

yes exactly

Could you please explain in more detail what do you want to test?

No, U just started to learn ktor, created simple crud with exposed and want to test repository layer with testContainers(postgres) in the internet I found that there is a kotest framework provides an opportunity to work with testContainers. Should I use

testImplementation("org.jetbrains.kotlin:kotlin-test:$kotlin_version")

this guy to make everything work, or it is not enough to deal with testContainers, hard to tell. I was looking for a tutorials, could not find anything. All tutorials are without testing

I suggest asking your questions in the #exposed channel too.

I do this in Climate Changemakers Act with SQLDelight. The configuration will probably be slightly different, but this should be helpful. https://github.com/climatechangemakers/climate-changemakers-act/blob/trunk/backend[…]g/climatechangemakers/act/feature/util/TestContainerProvider.kt

so the configuration that I am using now looks like

class UserRepositoryTests {

    private val container = ContainerInitiator.startContainer()

    @Test
    fun `should create User`() {
        withTestApplication(
            {
                initiateEnvironmentVariables(container)
                configureDatabase()
            }
        ) {
            val repository = UserRepositoryImpl()
            val user = User(randomUUID(), "John")
            repository.insert(user)
            val allUsers = repository.findAll()
            assertTrue(allUsers.isNotEmpty())
            assertTrue {
                allUsers.isNotEmpty()
                allUsers.contains(user)
                allUsers.size == 1
                allUsers.first() == user
            }
           
        }
    }
}
fun Application.initiateEnvironmentVariables(container: Postgres13Container) {
    (environment.config as MapApplicationConfig).apply {
        put("db.jdbcUrl", container.jdbcUrl)
        put("db.username", container.username)
        put("db.password", container.password)
    }
}

object Postgres13Container : PostgreSQLContainer<Postgres13Container>("postgres:13-alpine")

object ContainerInitiator {

    fun startContainer(): Postgres13Container {
        return Postgres13Container
            .withDatabaseName("ktor_init")
            .withUsername("postgres")
            .withPassword("postgres")
            .also { it.start() }
    }
}

And I dont know whether it is valid or not, it works, but is it the right way..who knows)