Tests don't cover all bugs

FolderBrowsingPresenterTest.kt

  @Test
  fun `When unscanned song clicked, song is scanned into library`() {
    val presenter = FolderBrowsingPresenter(queue, MockSongRepository())
    val target: FolderBrowsingPresenter.Target = mock()

    presenter.attach(target)
    presenter.onUnscannedSongClicked(
        DirectoryItemSong(
            name = "01 Get You.m4a",
            lastModifiedTime = 1234L,
            inDatabase = false,
            path = "/sdcard/Music/Daniel Caesar/Freudian/01 Get You.m4a",
            size = 9001
        )
    )

    verify(target).showLoading()
    verify(target).hideLoading()
    verify(target).playSong(420L.toSongId())

    verifyNoMoreInteractions(target)
  }