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test_quarter_utils.py
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#
# Copyright 2012 Quantopian, Inc.
#
# 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 unittest import TestCase
import datetime
import pytz
from zipline.utils.date_utils import (
get_quarter,
dates_of_quarter
)
class DateUtilsQuarterTests(TestCase):
def test_dates_quarter_inverses(self):
last_quarter = None
for y in xrange(1900, 2050):
for m in xrange(1, 13):
dt = datetime.datetime(y, m, 1, tzinfo=pytz.utc)
q = get_quarter(dt)
if last_quarter:
self.assertGreater(q, last_quarter)
boundaries = dates_of_quarter(q)
self.assertTrue(
boundaries[0] <= dt <= boundaries[1],
"dates_of_quarter not inverse of get_quarter {0}"
.format(dt,))
self.assertEqual(q, get_quarter(boundaries[0]))
self.assertEqual(q, get_quarter(boundaries[1]))