public void TestArtistAddItem()
{
//Arrange
var SqlLiteDataMock = new Mock <IMusicData>();
var ArtistController = new ArtistController(SqlLiteDataMock.Object);
//Act
ActionResult actionResult = ArtistController.ArtistAddItem(new Artist()
{
ArtistName = null
});
// Assert
Assert.IsType <BadRequestObjectResult>(actionResult);
}