public async void TestGetAlbumRatingByIdAsync() { var data = await _albumsController.GetAlbumRatingByIdAsync(Guid.Parse("0f078d0e-6602-4375-a088-ab8d00fabbb1")); Assert.IsAssignableFrom <AlbumRatingDto>(data); bool IsValid = data.ErrorMessage == null ? true : false; Assert.True(IsValid); }