Using the match operator as an alternative to include?

enum_match.rb

class Object
  def =~ n
    return n =~ self if n.is_a?(Enumerable)
    false
  end
end

module Enumerable
  alias_method :=~, :include?
end

if __FILE__ == $0
  require 'test/unit'

  class EnumMatchTest < Test::Unit::TestCase

    def test_strings
      assert('bar' =~ %w(foo bar baz))
      assert(%w(foo bar baz) =~ 'bar')
      assert('boo' !~ %w(foo bar baz))
      assert(%w(foo bar baz) !~ 'boo')
    end

    def test_number
      assert(10 =~ (1..20))
      assert((1..20) =~ 10)
      assert(30 !~ (1..20))
      assert((1..20) !~ 30)
    end

  end
end