Anyone have tips on testing coroutines in multiplatform proj kotlinlang #coroutines

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pardom

02/26/2019, 4:37 PM

Anyone have tips on testing coroutines in multiplatform projects?

runBlocking

isn’t in common so that can’t be used.

thana

02/26/2019, 4:54 PM

i had the same problem with testing JS. the solution was to declare a method in

commonTest

like that:

expect fun runTest(block: suspend () -> Unit)

that would be used to wrap the unit test testing the coroutine

on the jvm its implemented as

actual fun runTest(block: suspend () -> Unit) = runBlocking { block() }

and on js like that

actual fun runTest(block: suspend () -> Unit): dynamic = GlobalScope.promise {
    block()
}

in the end frameworks like jasmin and mocha can await the promise and in the testcode you can e.g. call

delay

gildor

02/27/2019, 3:30 AM

See this issue https://youtrack.jetbrains.com/issue/KT-22228

There are a few workarounds how to test suspend code in JS (and also let to test it in MPP)

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