code: def test_to_basestring():
      assert strings.to_basestring("str") == "str"
      assert strings.to_basestring("юникод") == "юникод"
      if six.PY2:  # __str__ should return str not bytes in Python3
          assert (
              strings.to_basestring(Convertible()) == Convertible.text
          )
          assert (
              strings.to_basestring(ConvertibleToUnicodeOnly())
              == Convertible.text
          )
          assert (
              strings.to_basestring(ConvertibleToStrOnly())
              == Convertible.text_utf8
          )
          assert strings.to_basestring(NonConvertible())
  
imports: import pytest
  import six
  from library.python import strings
label_desc: Use image node_id 1 for calling a global function with example usage: test_to_basestring() without return types