class Differ::Change

def ==(other)
  self.insert == other.insert && self.delete == other.delete
end

def change?
  !@insert.empty? && !@delete.empty?
end

def delete?
  !@delete.empty?
end

def initialize(options = {})
  @insert = options[:insert] || ''
  @delete = options[:delete] || ''
end

def insert?
  !@insert.empty?
end

def to_s
  Differ.format.format(self)
end