public void ItThrowsAPlayerAlreadyExistsExceptionIfAttemptingToSaveAPlayerWithANameThatAlreadyExists()
{
var exception = Assert.Throws<PlayerAlreadyExistsException>(
() => _autoMocker.ClassUnderTest.Save(this._playerThatAlreadyExists, _currentUser));
Assert.AreEqual(_idOfPlayerThatAlreadyExists, exception.ExistingPlayerId);
}
}