test_dhcp.py 文件源码

def test_raises_error_when_omshell_crashes(self):
        error_message = factory.make_name("error").encode("ascii")
        omshell = Mock()
        omshell.create.side_effect = ExternalProcessError(
            returncode=2, cmd=("omshell",), output=error_message)
        mac = factory.make_mac_address()
        ip = factory.make_ip_address()
        with FakeLogger("maas.dhcp") as logger:
            error = self.assertRaises(
                exceptions.CannotCreateHostMap, dhcp._create_host_map,
                omshell, mac, ip)
        # The CannotCreateHostMap exception includes a message describing the
        # problematic mapping.
        self.assertDocTestMatches(
            "Could not create host map for %s -> %s: ..." % (mac, ip),
            str(error))
        # A message is also written to the maas.dhcp logger that describes the
        # problematic mapping.
        self.assertDocTestMatches(
            "Could not create host map for %s -> %s: ..." % (mac, ip),
            logger.output)