def test_verifyUnparsableEncryptionMarker(self):
        """
        Loading a L{KnownHostsFile} from a path containing an unparseable line
        that starts with an encryption marker will be represented as an
        L{UnparsedEntry} instance.
        """
        hostsFile = self.loadSampleHostsFile((b"|1|This is unparseable.\n"))
        entries = list(hostsFile.iterentries())
        self.assertIsInstance(entries[0], UnparsedEntry)
        self.assertEqual(entries[0].toString(), b"|1|This is unparseable.")
        self.assertEqual(1, len(entries))

        Loading a L{KnownHostsFile} from a path containing an unparseable line
        that starts with an encryption marker will be represented as an
        L{UnparsedEntry} instance.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/conch/test/test_knownhosts.py