public void ItThrowsAnArgumentNullExceptionIfTheModelIsNull()
{
var expectedException = new ArgumentNullException(typeof(CreateBoardGameGeekUserDefinitionRequest).ToString());
Exception exception = Assert.Throws<ArgumentNullException>(() => autoMocker.ClassUnderTest.CreateUserDefintion(null, currentUser));
Assert.AreEqual(expectedException.Message, exception.Message);
}