I use the Funspec testing style in kotest and I get a coroutineScope injected automatically by the framework as shown below.
class MyTestSpec: FunSpec() {
init {
test("test event loop") {
mySuspendedFunction() // a coroutineScope is already injected by the test framework here
}
}
}
How can I configure the Kotest framework to use an instance of kotlinx.coroutines.test.TestCoroutineScope
instead of a kotlinx.coroutines.CoroutineScope
in my tests? or is there a reason why this wouldn't make sense?
Create a test listener like this:
class MainCoroutineListener(
val testDispatcher: TestCoroutineDispatcher = TestCoroutineDispatcher()
) : TestListener {
override suspend fun beforeSpec(spec: Spec) {
Dispatchers.setMain(testDispatcher)
}
override suspend fun afterSpec(spec: Spec) {
Dispatchers.resetMain()
testDispatcher.cleanupTestCoroutines()
}
}
Then use it in your test like this
class MyTest : FunSpec({
listeners(MainCoroutineListener())
tests...
})