text: import io
  import unittest
  
  from unittest.mock import patch
  from {{ cookiecutter.project_name }}.world import say_hello
  
  
  class TestWorld(unittest.TestCase):
  
      @patch('sys.stdout', new_callable=io.StringIO)
      def test_should_say_hello(self, mock_stdout):
          say_hello()
          self.assertEqual('hello world\n', mock_stdout.getvalue())
  
  
  if __name__ == '__main__':
      unittest.main()
  