rubocop-preview-4.ruby

module RuboCop
  module Cop
    module CustomCops
      class TimecopReplacerCop < Cop
        # ...
        def autocorrect(arg_pair)
          date_string = eval(arg_pair.value.source).strftime('%Y-%m-%dT%H:%M:%S%z')
          new_source = String.new("freezed_time: '#{date_string}'")

          ->(corrector) do
            corrector.insert_before(arg_pair.source_range, new_source)
            corrector.remove(arg_pair.source_range)
          end
        end
        # ...
      end
    end
  end
end