Trying to test the server (runs on a different hos...

# ktor

[napperley]

Trying to test the server (runs on a different host and port) via the Kotlin Test library, and have encountered a situation where when running a test it runs indefinitely. Below is the test logic:

import io.kotlintest.specs.FunSpec
import io.ktor.application.Application
import io.ktor.http.HttpMethod
import io.ktor.http.HttpStatusCode
import io.ktor.server.testing.handleRequest
import io.ktor.server.testing.withTestApplication
import kotlin.test.assertEquals

class RouteTest : FunSpec() {
    init {
        testHomeRouteExists()
    }

    private fun testHomeRouteExists() = test("homeRouteExists") {
        withTestApplication(Application::main) {
            with(handleRequest(HttpMethod.Get, "/")) {
                assertEquals(expected = HttpStatusCode.OK, actual = response.status())
                assertEquals(expected = "Battery Info Server\n", actual = response.content)
            }
        }
    }
}

[napperley]

Resolved the issue by restructuring server.kt file to the following:

// ...
fun main() {
    val env = applicationEngineEnvironment {
        module { main() }
        connector {
            host = GeneralSettings.host
            port = GeneralSettings.port
        }
    }
    <http://logger.info|logger.info>("Starting server (on http://${GeneralSettings.host}:${GeneralSettings.port})...")
    embeddedServer(factory = Netty, environment = env).start(true)
}

fun Application.main() {
    connectToDb()
    install(ContentNegotiation, setupJackson())
    install(StatusPages, setupStatusPages())
    routing {
        homeRoute(this)
        ownerExistsRoute(this)
        listOwnersRoute(this)
        setupSiteRoutes(this)
        setupSensorDataRoutes(this)
        sensorDataTimestampRangeRoute(this)
    }
}
// ...

[dave08]

I had a similar problem when using two connectors for two different ports... which piece solved the problem exactly? Would it apply for two ports too?

[napperley]

Before the restructuring there was no main module (Application::main) which was the missing piece to get testing in Ktor to work.

[napperley]

Since then I have created a separate testMain module that is used in tests which looks like the following:

fun Application.testMain() {
    install(ContentNegotiation, setupJackson())
    install(StatusPages, setupStatusPages())
    routing {
        homeRoute(this)
        setupOwnerRoutes(this, true)
        setupSiteRoutes(this, true)
        setupSensorDataRoutes(this, true)
    }
}

[napperley]

The connector is only applicable to the Production server. Ktor takes care of configuring the Test server. There is no need to provide a host and port.

[dave08]

Oh... I used the new port(8080) { ... } route, and the tests seem to ignore it, I guess its a different problem then 😞