old_contents: import unittest
  
  import hello_world
  
  
  # Tests adapted from `problem-specifications//canonical-data.json` @ v1.0.0
  
  class HelloWorldTests(unittest.TestCase):
      def test_hello(self):
          self.assertEqual(hello_world.hello(), 'Hello, World!')
  
  
  if __name__ == '__main__':
      unittest.main()
  
new_contents: import unittest
  
  import hello_world
  
  
  # Tests adapted from `problem-specifications//canonical-data.json` @ v1.1.0
  
  class HelloWorldTests(unittest.TestCase):
      def test_hello(self):
          self.assertEqual(hello_world.hello(), 'Hello, World!')
  
  
  if __name__ == '__main__':
      unittest.main()
  
subject: update tests to v1.1.0 (#1264)