text: """Functional test of the 'extract_text_from_xml.py' script"""
  from subprocess import Popen, PIPE
  from .test_helper import set_test_env
  
  def test_output_of_main():
      """Sample tests of the text extracted from XML by the 'extract_text_from_xml.py' script"""
      program = 'src/extract_text_from_xml.py'
      output = Popen([program], stdout=PIPE).communicate()[0]
      assert b'Some text in "value" node' in output
      assert b'Some other text in "value" node' in output
      assert b'Some text in "description" node' in output
      assert b'Some other instance text in "name" node' in output
      assert b'Some other instance text in a deeper nested "label" node' in output
  
  set_test_env()
  