How to test repository?

Hi!

I need to know how can I test my repository. For example:

class AdminRepositoryImpl : AdminRepository {
    override fun create(builder: AdminParams): Int {
        return transaction {
            Admins.insert {
                it[login] = builder.login
                it[password] = builder.password
                it[createdAt] = DateTime.now()
            }[Admins.id].value
        }
    }
}

How can I test it? I use ktor + exposed, so I thought that “withTestApplication” will be work but it doesn’t .

[hfhbd]

Depending on your test/use case I use this test function:

@OptIn(ExperimentalContracts::class)
fun dbTest(
    name: String? = null,
    setup: suspend (Database) -> Unit = { },
    test: suspend (Database) -> Unit
) {
    contract {
        callsInPlace(setup, InvocationKind.EXACTLY_ONCE)
        callsInPlace(test, InvocationKind.EXACTLY_ONCE)
    }
    val dbName = name ?: "test${SecureRandom.nextUUID()}"
    val db = Database.connect("jdbc:h2:mem:$dbName;DB_CLOSE_DELAY=-1;", "org.h2.Driver")
    transaction(db) {
        runBlocking {
            setup(db)
        }
    }
    runBlocking {
        test(db)
    }
    TransactionManager.closeAndUnregister(db)
}

Remove the “features” you don’t use, eg contracts, suspend, name etc. Usage

@Test
fun createTest() = dbTest(setup = {
    SchemaUtils.create(Places)
}) { db ->
    val controller = PlaceController(db = db)
    controller.create(place1)
    controller.create(place2)
    assertEquals(SimilarResult(null, listOf(place1)), controller.findSimilar(place1.copy(name = "Real")))
}

[TheReprator]

i want to test the above mentioned insert operation, so i can i make sure, whether database is correctly inserted or not with test with the command, i gave, @Tapac @LookBad