new_contents: from fontTools.ttLib import TTFont
  from fontTools.ttLib.ttVisitor import TTVisitor
  import os
  import pytest
  
  
  class TTVisitorTest(object):
  
      @staticmethod
      def getpath(testfile):
          path = os.path.dirname(__file__)
          return os.path.join(path, "data", testfile)
  
      def test_ttvisitor(self):
  
          font = TTFont(self.getpath("TestVGID-Regular.otf"))
          visitor = TTVisitor()
          visitor.visit(font, 1, 2, arg=3)
  
subject: Add ttVisitor test