fails:Hash#< returns false when receiver size is larger than argument
fails:Hash#< returns false when receiver size is the same as argument
fails:Hash#< returns true when receiver is a subset of argument
fails:Hash#< returns false when keys match but values don't
fails:Hash#< raises a TypeError if the right operand is not a hash
fails:Hash#< returns false if both hashes have the same keys but different values
fails:Hash#< returns true if self is a subset of the other hash
fails:Hash#< returns false if self is not a subset of the other hash
fails:Hash#< converts the right operand to a hash before comparing
fails:Hash#< returns false if both hashes are identical
