dispatchers_unfinished_cancel.kt

class MediaPlayer(...) {

    ...

    fun dispose() {
        scope.cancel()
    }

}

class NeverEndingCoroutineTest {

    @Test
    fun `should emit error when playSound throws`() = runTest {

        ...

        sut.playerErrors.test {
            sut.play()
            awaitItem() shouldBe exception
        }

        sut.dispose()

    }

}