def test_ignoresLeadingWhitespaceAndEmptyLines(self):
        fileobj = BytesIO(b"""
                           # ignore
                           not ignored
                           """)
        result = checkers.readAuthorizedKeyFile(fileobj, parseKey=lambda x: x)
        self.assertEqual([b'not ignored'], list(result))
L{checkers.readAuthorizedKeyFile} ignores leading whitespace in
dataset/ETHPy150Open twisted/twisted/twisted/conch/test/test_checkers.py/AuthorizedKeyFileReaderTests.test_ignoresLeadingWhitespaceAndEmptyLines