fails:Symbol#<=> with Symbol compares individual characters based on their ascii value
fails:Symbol#<=> with Symbol returns -1 when self is less than other
fails:Symbol#<=> with Symbol returns 1 when self is greater than other
fails:Symbol#<=> with Symbol considers symbol that comes lexicographically first to be less if the symbols have same size
fails:Symbol#<=> with Symbol doesn't consider shorter string to be less if longer string starts with shorter one
fails:Symbol#<=> with Symbol compares shorter string with corresponding number of first chars of longer string
fails:Symbol#<=> returns nil if other is a String
fails:Symbol#<=> returns nil if other is a Fixnum
fails:Symbol#<=> returns nil if other is an object
