Hi everyone ! Is it possible to test following pi...

# mockk

[Melih Aksoy]

Hi everyone !

Is it possible to test following piece of code via mocks ?

process
    .inputStream
    .bufferedReader()
    .useLines { seq ->
        val summary = seq.find { line -> line.contains(KEY_PACKET_LOSS) }

        if (summary != null) {
            val loss = packetLoss(summary)

            val result = when {
                loss > acceptablePacketLoss -> Stability.UNSTABLE
                loss == MAX_LOSS -> Stability.NO_CONNECTION
                else -> Stability.STABLE
            }

            continuation.resumeIfActive(result)
        } else {
            continuation.resumeWithExceptionIfActive(
                IllegalStateException("Couldn't find result line in ping command")
            )
        }
    }

I added required statics, but bufferedReader and useLines are inline methods… can I work this around somehow ?

[Mattia Tommasone]

mmm
not sure about it
how about extracting your block inside useLines to a separate function and testing it separately?
idk if it’s feasible, but it looks like the easiest solution to me, especially since useLines is inline and, thus, not mockable

[Melih Aksoy]

yeah, seems like the only option, wanted to check if I can actually pass my mocked streams as there are few more useLines but better than skipping due to inline 😄 thanks ! 🙇

[christophsturm]

you don’t need mocks to test that. mocks are for testing interactions. no need to mock data structures. just use a bytearray input stream