Is it possible to run a suspending test in Kotlin/...

# multiplatform

[Casey Brooks]

Is it possible to run a suspending test in Kotlin/Native for iOS? I’m trying to test a Ktor client. I get immutability exceptions when doing runBlocking, so I tried to set up a polling solution with .launch { } and usleep(), but it doesn’t seem like the launched block ever executes.

[Casey Brooks]

Polling test code

println("before launch")
PlatformApiUtils.mainCoroutineScope.launch {
    println("before block")
    block()
    println("after block")
    isDoneAtomic.lazySet(true)
}
println("after launch")

println("before polling")
while(true) {
    ... poll for completion of '.launch { }'
}

Dispatcher

class UI : CoroutineDispatcher() {
    override fun dispatch(context: CoroutineContext, block: Runnable) {
        val queue = dispatch_get_main_queue()
        dispatch_async(queue) {
            block.run()
        }
    }
}

Output

before launch
after launch
before polling // I'd expect logging from inside the block after this line
polling timeout reached

[Casey Brooks]

The dispatcher works fine on the iOS simulator, it just doesn’t seem to start in the tests