code: def test_expand_full_path(self):
      if not "HOME" in os.environ:
          raise RuntimeError(
              "warning: cannot find $HOME key in environment"
          )
      else:
          home = os.environ["HOME"]
          self.assertTrue(
              fu.expand_full_path("~/tmp"), os.path.join(home, "tmp")
          )
          self.assertTrue(
              fu.expand_full_path("tmp"),
              os.path.join(os.getcwd(), "tmp"),
          )
  
file_path: turicreate/src/python/turicreate/test/test_file_util.py
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import os
  import unittest
  from ..util import _file_util
  import pytest
label_desc: Use image node_id 5 for calling the FileUtilTests obj's underlying member method code with example usage: obj.test_expand_full_path() without return types