public void GetAllAlbumsListTest()
{
//Setup
Mock <IDataContext> mock = new Mock <IDataContext>();
mock.Setup(context => context.Albums).Returns(GetAlbumsList());
AlbumsController albumsController = new AlbumsController(mock.Object);
//Action
IActionResult result = albumsController.GetAll();
//Assert
var status = Assert.IsType <OkObjectResult>(result);
var model = Assert.IsAssignableFrom <IEnumerable <AlbumModel> >(status.Value);
Assert.Equal(GetAlbumsList().Count(), model.Count());
}