old_contents: import boto
  import sure  # noqa
  
  from moto import mock_ec2
  
  
  @mock_ec2
  def test_key_pairs():
      pass
  
new_contents: import boto
  import sure  # noqa
  
  from moto import mock_ec2
  
  
  @mock_ec2
  def test_key_pairs_empty():
      conn = boto.connect_ec2('the_key', 'the_secret')
      assert len(conn.get_all_key_pairs()) == 0
  
subject: add a first failing unit test for keypairs