'Verify that when a source is deleted, the PGP key that corresponds
to them is also deleted.'

def test_delete_source_deletes_source_key(self):

    self._delete_collection_setup()
    source_key = crypto_util.getkey(self.source.filesystem_id)
    self.assertNotEqual(source_key, None)
    journalist.delete_collection(self.source.filesystem_id)
    source_key = crypto_util.getkey(self.source.filesystem_id)
    self.assertEqual(source_key, None)
