dispatchers_errors_test.kt

@OptIn(ExperimentalCoroutinesApi::class)
class NeverEndingCoroutineTest {

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

        val exception = Exception("Oopsie")
        val soundPlayer = mockk<SoundPlayer>()
        coEvery { soundPlayer.playSound() } throws exception

        val sut = MediaPlayer(this, soundPlayer)

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

    }

}