# 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 sqlalchemy.ext import declarative

from keystone.common import sql
from keystone.tests import unit
from keystone.tests.unit import utils


ModelBase = declarative.declarative_base()


class TestModel(ModelBase, sql.ModelDictMixin):
    __tablename__ = 'testmodel'
    id = sql.Column(sql.String(64), primary_key=True)
    text = sql.Column(sql.String(64), nullable=False)


class TestModelDictMixin(unit.BaseTestCase):

    def test_creating_a_model_instance_from_a_dict(self):
        d = {'id': utils.new_uuid(), 'text': utils.new_uuid()}
        m = TestModel.from_dict(d)
        self.assertEqual(d['id'], m.id)
        self.assertEqual(d['text'], m.text)

    def test_creating_a_dict_from_a_model_instance(self):
        m = TestModel(id=utils.new_uuid(), text=utils.new_uuid())
        d = m.to_dict()
        self.assertEqual(d['id'], m.id)
        self.assertEqual(d['text'], m.text)

    def test_creating_a_model_instance_from_an_invalid_dict(self):
        d = {'id': utils.new_uuid(), 'text': utils.new_uuid(), 'extra': None}
        self.assertRaises(TypeError, TestModel.from_dict, d)

    def test_creating_a_dict_from_a_model_instance_that_has_extra_attrs(self):
        expected = {'id': utils.new_uuid(), 'text': utils.new_uuid()}
        m = TestModel(id=expected['id'], text=expected['text'])
        m.extra = 'this should not be in the dictionary'
        # NOTE(notmorgan): This is currently explicitly harmless as this does
        # not actually use SQL-Alchemy.
        self.assertEqual(expected, m.to_dict())