test_dhcp.py 文件源码

def test_raises_error_when_omshell_not_connected(self):
        error = ExternalProcessError(
            returncode=2, cmd=("omshell",), output="")
        self.patch(ExternalProcessError, 'output_as_unicode', 'not connected.')
        omshell = Mock()
        omshell.remove.side_effect = error
        mac = factory.make_mac_address()
        with FakeLogger("maas.dhcp") as logger:
            error = self.assertRaises(
                exceptions.CannotRemoveHostMap, dhcp._remove_host_map,
                omshell, mac)
        # The CannotCreateHostMap exception includes a message describing the
        # problematic mapping.
        self.assertDocTestMatches(
            "Could not remove host map for %s: "
            "The DHCP server could not be reached." % (mac),
            str(error))
        # A message is also written to the maas.dhcp logger that describes the
        # problematic mapping.
        self.assertDocTestMatches(
            "Could not remove host map for %s: "
            "The DHCP server could not be reached." % (mac),
            logger.output)