# File test/unit/assertions.rb, line 160
      def assert_operator(object1, operator, object2, message="")
        full_message = build_message(message, object1, operator, object2) do |arg1, arg2, arg3|
          "<#{arg1}> expected to be\n" +
          "#{arg2}\n" +
          "<#{arg3}>"
        end
        assert_block(full_message) { object1.send(operator, object2) }
      end