# coding=utf-8
#
# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis-python
#
# Most of this work is copyright (C) 2013-2018 David R. MacIver
# (david@drmaciver.com), but it contains contributions by others. See
# CONTRIBUTING.rst for a full list of people who may hold copyright, and
# consult the git log if you need to determine who owns an individual
# contribution.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at http://mozilla.org/MPL/2.0/.
#
# END HEADER
"""This module provides ``dateutil`` timezones.
You can use this strategy to make
:py:func:`hypothesis.strategies.datetimes` and
:py:func:`hypothesis.strategies.times` produce timezone-aware values.
"""
from __future__ import division, print_function, absolute_import
import datetime as dt
from dateutil import tz, zoneinfo # type: ignore
import hypothesis.strategies as st
__all__ = ['timezones']
[docs]@st.cacheable
@st.defines_strategy
def timezones():
# type: () -> st.SearchStrategy[dt.tzinfo]
"""Any timezone in dateutil.
This strategy minimises to UTC, or the timezone with the smallest offset
from UTC as of 2000-01-01, and is designed for use with
:py:func:`~hypothesis.strategies.datetimes`.
Note that the timezones generated by the strategy may vary depending on the
configuration of your machine. See the dateutil documentation for more
information.
"""
reference_date = dt.datetime(2000, 1, 1)
tz_names = zoneinfo.get_zonefile_instance().zones
all_timezones = [tz.UTC] # type: ignore
all_timezones += sorted(
[tz.gettz(t) for t in tz_names],
key=lambda zone: abs(zone.utcoffset(reference_date))
)
return st.sampled_from(all_timezones)