old_contents: import unittest
  
  
  class ExampleTest(unittest.TestCase):
      def test(self):
          self.assertTrue(True)
  
  
  
  if __name__ == '__main__':
      unittest.main()
  
new_contents: import unittest
  
  
  class ExampleTest(unittest.TestCase):
      def test(self):
          self.assertTrue(True)
  
  
  if __name__ == '__main__':
      unittest.main()
  
subject: Revert build test