def METHOD_NAME(self):
    seq = '10-blahblah'
    self.pillow.set_checkpoint({'seq': seq})
    HistoricalPillowCheckpoint.create_checkpoint_snapshot(self.pillow.checkpoint)
    store = HistoricalPillowCheckpoint.get_latest_for_pillow('DummyPillow')
    self.assertIsNotNone(store)
    store = HistoricalPillowCheckpoint.get_latest_for_pillow('DummyPillowThatDoesNotExist')
    self.assertIsNone(store)