code: def test_ValidFile(self):
      tmpfile = valid_textfile(self.tmpdir)
      tmpfilename = os.path.split(tmpfile)[-1]
      # Test with filename only
      assert_equal(tmpfile, self.ds.abspath(tmpfilename))
      # Test filename with complete path
      assert_equal(tmpfile, self.ds.abspath(tmpfile))
  
imports: import os
  import pytest
  from tempfile import mkdtemp, mkstemp, NamedTemporaryFile
  from shutil import rmtree
  import numpy.lib._datasource
  from numpy.testing import assert_, assert_equal, assert_raises
  import urllib.request
  from urllib.parse import urlparse
  from urllib.error import URLError
label_desc: Use image node_id 4 for calling the TestDataSourceAbspath obj's underlying member method code with example usage: obj.test_ValidFile() without return types