mock_get_nova_client().hosts.list_all.return_value = [A('compute')]
obj = GetMigrateTargetHost({}, {})
host = obj._get_migrate_host('host5')
mock_get_nova_client().hosts.list_all.return_value = [A('compute')]
obj = GetMigrateTargetHost({}, {})
host = obj._get_migrate_host('host5')