from test_utils import CharmTestCase
from mock import patch
import pg_gw_context as context
import charmhelpers

TO_PATCH = [
    #'_pg_dir_settings',
    'config',
    'get_unit_hostname',
]


def fake_context(settings):
    def outer():
        def inner():
            return settings
        return inner
    return outer


class PGGwContextTest(CharmTestCase):

    def setUp(self):
        super(PGGwContextTest, self).setUp(context, TO_PATCH)
        self.config.side_effect = self.test_config.get
        self.test_config.set('external-interface', 'eth1')

    def tearDown(self):
        super(PGGwContextTest, self).tearDown()

    @patch.object(context.PGGwContext, '_ensure_packages')
    @patch.object(charmhelpers.contrib.openstack.context, 'https')
    @patch.object(charmhelpers.contrib.openstack.context, 'is_clustered')
    @patch.object(charmhelpers.contrib.openstack.context, 'config')
    @patch.object(charmhelpers.contrib.openstack.context, 'unit_private_ip')
    @patch.object(charmhelpers.contrib.openstack.context, 'unit_get')
    @patch.object(charmhelpers.contrib.openstack.context, 'config_flags_parser')
    @patch.object(context.PGGwContext, '_save_flag_file')
    @patch.object(context, '_pg_dir_settings')
    @patch.object(charmhelpers.contrib.openstack.context, 'neutron_plugin_attribute')
    def test_neutroncc_context_api_rel(self, _npa, _pg_dir_settings, _save_flag_file,
                                       _config_flag, _unit_get, _unit_priv_ip, _config,
                                       _is_clus, _https, _ens_pkgs):
        def mock_npa(plugin, section, manager):
            if section == "driver":
                return "neutron.randomdriver"
            if section == "config":
                return "neutron.randomconfig"
        config = {'external-interface': "eth1"}

        def mock_config(key=None):
            if key:
                return config.get(key)

            return config

        self.maxDiff = None
        self.config.side_effect = mock_config
        _npa.side_effect = mock_npa
        _unit_get.return_value = '192.168.100.201'
        _unit_priv_ip.return_value = '192.168.100.201'
        self.get_unit_hostname.return_value = 'node0'
        _is_clus.return_value = False
        _config_flag.return_value = False
        _pg_dir_settings.return_value = {'pg_dir_ip': '192.168.100.201'}
        napi_ctxt = context.PGGwContext()
        expect = {
            'ext_interface': "eth1",
            'config': 'neutron.randomconfig',
            'core_plugin': 'neutron.randomdriver',
            'local_ip': '192.168.100.201',
            'network_manager': 'neutron',
            'neutron_plugin': 'plumgrid',
            'neutron_security_groups': None,
            'neutron_url': 'https://192.168.100.201:9696',
            'pg_hostname': 'node0',
            'interface': 'juju-br0',
            'label': 'node0',
            'fabric_mode': 'host',
            'neutron_alchemy_flags': False,
        }
        self.assertEquals(expect, napi_ctxt())