public void ItThrowsAnArgumentNullExceptionIfThePlayerNameIsWhitespace()
{
var player = new Player
{
Name = " "
};
var expectedException = new ArgumentNullException("playerName");
Exception exception = Assert.Throws<ArgumentNullException>(() => _autoMocker.ClassUnderTest.Save(player, _currentUser));
Assert.AreEqual(expectedException.Message, exception.Message);
}