class ProgressBar
  class Time
    def self.now(time = ::Time)
      @@time = time

      @@time.send unmocked_time_method
    end

  private
    def self.unmocked_time_method
      time_mocking_library_methods.find { |method| @@time.respond_to? method }
    end

    def self.time_mocking_library_methods
      [
        :now_without_mock_time,       # Timecop
        :now_without_delorean,        # Delorean
        :now                          # Actual
      ]
    end
  end
end