def METHOD_NAME(self) -> None:
    # More output for easier debugging
    unittest.util._MAX_LENGTH = 12345
    # pyre-fixme[16]: `YumDnfConfTestCaseImpl` has no attribute `maxDiff`.
    self.maxDiff = 12345
    conf_str = io.StringIO(
        textwrap.dedent(
            """\
    # Unfortunately, comments are discarded by ConfigParser, but I don't
    # want to depend on `ConfigObj` or `iniparse` for this.
    [main]
    debuglevel=2
    gpgcheck=1
    metadata_expire = 1  # seconds
    sslcacert =/some/file
    [potato]
    sslclientkey = /another/file
    baseurl=file:///pot.at/to
    enabled=1
    [oleander]
    baseurl=http://example.com/oleander
    gpgkey=https://example.com/zupa, https://example.com/list/comma
    \thttps://example.com/super/safe https://example.com/list/space
    enabled=1
    """
        )
    )
    # pyre-fixme[16]: `YumDnfConfTestCaseImpl` has no attribute `conf`.
    # pyre-fixme[16]: `YumDnfConfTestCaseImpl` has no attribute `_YUM_DNF`.
    self.conf = YumDnfConfParser(self._YUM_DNF, conf_str)