fails:Range#initialize is private
fails:Range#initialize initializes correctly the Range object when given 2 arguments
fails:Range#initialize initializes correctly the Range object when given 3 arguments
fails:Range#initialize raises an ArgumentError if passed without or with only one argument
fails:Range#initialize raises an ArgumentError if passed with four or more arguments
fails:Range#initialize raises a NameError if called on an already initialized Range
fails:Range#initialize raises an ArgumentError if arguments don't respond to <=>
