code: def test_tell(self):
      with self.open(os_helper.TESTFN, self.READMODE) as fp:
          self.assertEqual(repr(fp.newlines), repr(None))
          data = fp.readline()
          pos = fp.tell()
      self.assertEqual(repr(fp.newlines), repr(self.NEWLINE))
  
imports: import io
  import _pyio
  import unittest
  import os
  import sys
  from test.support import os_helper
label_desc: Use image node_id 1 for calling the TestCRLFNewlines obj's underlying member method code with example usage: obj.test_tell() without return types