old_contents: """Tests for json.
  
  The tests for json are defined in the json.tests package;
  the test_suite() function there returns a test suite that's ready to
  be run.
  """
  
  import json.tests
  import test.test_support
  
  
  def test_main():
      test.test_support.run_unittest(json.tests.test_suite())
  
  
  if __name__ == "__main__":
      test_main()
  
new_contents: """Tests for json.
  
  The tests for json are defined in the json.tests package;
  the test_suite() function there returns a test suite that's ready to
  be run.
  """
  
  import json.tests
  import test.test_support
  
  
  def test_main():
      test.test_support.run_unittest(json.tests.test_suite())
      test.test_support.run_doctest(json)
  
  
  if __name__ == "__main__":
      test_main()
  
subject: Add the examples in the json module docstring as a doctest