charm-ceph-radosgw/unit_tests/test_ceph_radosgw_utils.py

# Copyright 2016 Canonical Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#  http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from mock import (
    patch,
    MagicMock,
)

import utils

from test_utils import CharmTestCase

TO_PATCH = [
    'application_version_set',
    'get_upstream_version',
    'https',
    'relation_ids',
    'relation_get',
    'related_units',
    'socket',
    'cmp_pkgrevno',
    'init_is_systemd',
]


class CephRadosGWUtilTests(CharmTestCase):
    def setUp(self):
        super(CephRadosGWUtilTests, self).setUp(utils, TO_PATCH)
        self.get_upstream_version.return_value = '10.2.2'
        self.socket.gethostname.return_value = 'testhost'

    def test_assess_status(self):
        with patch.object(utils, 'assess_status_func') as asf:
            callee = MagicMock()
            asf.return_value = callee
            utils.assess_status('test-config')
            asf.assert_called_once_with('test-config')
            callee.assert_called_once_with()
            self.get_upstream_version.assert_called_with(
                utils.VERSION_PACKAGE
            )
            self.application_version_set.assert_called_with('10.2.2')

    @patch.object(utils, 'get_optional_interfaces')
    @patch.object(utils, 'check_optional_relations')
    @patch.object(utils, 'REQUIRED_INTERFACES')
    @patch.object(utils, 'services')
    @patch.object(utils, 'make_assess_status_func')
    def test_assess_status_func(self,
                                make_assess_status_func,
                                services,
                                REQUIRED_INTERFACES,
                                check_optional_relations,
                                get_optional_interfaces):
        services.return_value = 's1'
        REQUIRED_INTERFACES.copy.return_value = {'int': ['test 1']}
        get_optional_interfaces.return_value = {'opt': ['test 2']}
        utils.assess_status_func('test-config')
        # ports=None whilst port checks are disabled.
        make_assess_status_func.assert_called_once_with(
            'test-config',
            {'int': ['test 1'], 'opt': ['test 2']},
            charm_func=check_optional_relations,
            services='s1', ports=None)

    def test_pause_unit_helper(self):
        with patch.object(utils, '_pause_resume_helper') as prh:
            utils.pause_unit_helper('random-config')
            prh.assert_called_once_with(utils.pause_unit, 'random-config')
        with patch.object(utils, '_pause_resume_helper') as prh:
            utils.resume_unit_helper('random-config')
            prh.assert_called_once_with(utils.resume_unit, 'random-config')

    @patch.object(utils, 'services')
    def test_pause_resume_helper(self, services):
        f = MagicMock()
        services.return_value = 's1'
        with patch.object(utils, 'assess_status_func') as asf:
            asf.return_value = 'assessor'
            utils._pause_resume_helper(f, 'some-config')
            asf.assert_called_once_with('some-config')
            # ports=None whilst port checks are disabled.
            f.assert_called_once_with('assessor', services='s1', ports=None)

    def _setup_relation_data(self, data):
        self.relation_ids.return_value = data.keys()
        self.related_units.side_effect = (
            lambda rid: data[rid].keys()
        )
        self.relation_get.side_effect = (
            lambda attr, rid, unit: data[rid][unit].get(attr)
        )

    def test_systemd_based_radosgw_old_style(self):
        _relation_data = {
            'mon:1': {
                'ceph-mon/0': {
                    'radosgw_key': 'testkey',
                },
                'ceph-mon/1': {
                    'radosgw_key': 'testkey',
                },
                'ceph-mon/2': {
                    'radosgw_key': 'testkey',
                },
            }
        }
        self._setup_relation_data(_relation_data)
        self.assertFalse(utils.systemd_based_radosgw())

    def test_systemd_based_radosgw_new_style(self):
        _relation_data = {
            'mon:1': {
                'ceph-mon/0': {
                    'rgw.testhost_key': 'testkey',
                },
                'ceph-mon/1': {
                    'rgw.testhost_key': 'testkey',
                },
                'ceph-mon/2': {
                    'rgw.testhost_key': 'testkey',
                },
            }
        }
        self._setup_relation_data(_relation_data)
        self.assertTrue(utils.systemd_based_radosgw())

    def test_request_per_unit_key(self):
        self.init_is_systemd.return_value = False
        self.cmp_pkgrevno.return_value = -1
        self.assertFalse(utils.request_per_unit_key())
        self.init_is_systemd.return_value = True
        self.cmp_pkgrevno.return_value = 1
        self.assertTrue(utils.request_per_unit_key())
        self.init_is_systemd.return_value = False
        self.cmp_pkgrevno.return_value = 1
        self.assertFalse(utils.request_per_unit_key())

        self.cmp_pkgrevno.assert_called_with('radosgw', '12.2.0')

    @patch.object(utils, 'systemd_based_radosgw')
    def test_service_name(self, mock_systemd_based_radosgw):
        mock_systemd_based_radosgw.return_value = True
        self.assertEqual(utils.service_name(),
                         'ceph-radosgw@rgw.testhost')
        mock_systemd_based_radosgw.return_value = False
        self.assertEqual(utils.service_name(),
                         'radosgw')