# -*- coding: utf-8 -*-
#
# 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 datetime import datetime, timedelta
import unittest

from airflow.macros import hive


class Hive(unittest.TestCase):
    def test_closest_ds_partition(self):
        d1 = datetime.strptime('2017-04-24', '%Y-%m-%d')
        d2 = datetime.strptime('2017-04-25', '%Y-%m-%d')
        d3 = datetime.strptime('2017-04-26', '%Y-%m-%d')
        d4 = datetime.strptime('2017-04-28', '%Y-%m-%d')
        d5 = datetime.strptime('2017-04-29', '%Y-%m-%d')
        target_dt = datetime.strptime('2017-04-27', '%Y-%m-%d')
        date_list = [d1, d2, d3, d4, d5]

        self.assertEquals("2017-04-26", str(hive._closest_date(target_dt, date_list, True)))
        self.assertEquals("2017-04-28", str(hive._closest_date(target_dt, date_list, False)))

        # when before is not set, the closest date should be returned
        self.assertEquals("2017-04-26", str(hive._closest_date(target_dt, [d1, d2, d3, d5], None)))
        self.assertEquals("2017-04-28", str(hive._closest_date(target_dt, [d1, d2, d4, d5])))
        self.assertEquals("2017-04-26", str(hive._closest_date(target_dt, date_list)))


if __name__ == '__main__':
    unittest.main()
