# File lib/shoulda/context/assertions.rb, line 7
      def assert_same_elements(a1, a2, msg = nil)
        [:select, :inject, :size].each do |m|
          [a1, a2].each {|a| assert_respond_to(a, m, "Are you sure that #{a.inspect} is an array?  It doesn't respond to #{m}.") }
        end

        assert a1h = a1.inject({}) { |h,e| h[e] ||= a1.select { |i| i == e }.size; h }
        assert a2h = a2.inject({}) { |h,e| h[e] ||= a2.select { |i| i == e }.size; h }

        assert_equal(a1h, a2h, msg)
      end