# Copyright 2018 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.

import mock

import zaza.charm_lifecycle.utils as lc_utils
import unit_tests.utils as ut_utils


class TestCharmLifecycleUtils(ut_utils.BaseTestCase):

    def test_generate_model_name(self):
        self.patch_object(lc_utils.uuid, "uuid4")
        self.uuid4.return_value = "longer-than-12characters"
        self.assertEqual(lc_utils.generate_model_name(),
                         "zaza-12characters")

    def test_get_charm_config(self):
        self.patch("builtins.open",
                   new_callable=mock.mock_open(),
                   name="_open")
        self.patch_object(lc_utils, 'yaml')
        _yaml = "testconfig: someconfig"
        _yaml_dict = {'test_config': 'someconfig'}
        self.yaml.safe_load.return_value = _yaml_dict
        _filename = "filename"
        _fileobj = mock.MagicMock()
        _fileobj.__enter__.return_value = _yaml
        self._open.return_value = _fileobj

        self.assertEqual(lc_utils.get_charm_config(yaml_file=_filename),
                         _yaml_dict)
        self._open.assert_called_once_with(_filename, "r")
        self.yaml.safe_load.assert_called_once_with(_yaml)

    def test_get_class(self):
        self.assertEqual(
            type(lc_utils.get_class('unit_tests.'
                                    'test_zaza_charm_lifecycle_utils.'
                                    'TestCharmLifecycleUtils')()),
            type(self))