new_contents: from __future__ import print_function
  import sys
  import os
  import pytest
  sys.path.append('./')
  
  from fileprocess.filesline import FilesLine
  
  class TestClass(object):
      def test_FilesLine(self):
          curdir = os.path.split(os.path.realpath(__file__))[0]
          tmp = FilesLine(curdir)
  
      def test_sum_lines(self):
          curdir = os.path.split(os.path.realpath(__file__))[0]
          tmp = FilesLine(curdir)
          tmp.sum_lines()
  
subject: add filesline test code