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kotlinlang

Anyone have tips on testing coroutines in multiplatform projects? `runBlocking` isn’t in common so that can’t be used.

i had the same problem with testing JS. the solution was to declare a method in `commonTest` like that:
`expect fun runTest(block: suspend () -&gt; Unit)` that would be used to wrap the unit test testing the coroutine

on the jvm its implemented as `actual fun runTest(block: suspend () -&gt; Unit) = runBlocking { block() }` and on js like that ```
actual fun runTest(block: suspend () -&gt; 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`

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)