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|
"""
test_dates
~~~~~~~~~~~~~~~
Test functions in dates.py
"""
# stdlib
import re
from datetime import date, datetime, timedelta
from typing import Union
# 3rd party
import pytest
from coincidence.params import count
# this package
from domdf_python_tools import dates
# TODO: test get_timezone
try:
# 3rd party
import pytz
test_date = datetime(1996, 10, 13, 2, 20).replace(tzinfo=pytz.utc)
today = datetime.now(pytz.utc) # make sure UTC
def test_utc_offset():
# Check that the correct UTC offsets are given for common timezones
assert dates.get_utc_offset("US/Pacific", test_date) == timedelta(-1, 61200)
assert dates.get_utc_offset("Europe/London", test_date) == timedelta(0, 3600)
assert dates.get_utc_offset("Africa/Algiers", test_date) == timedelta(0, 3600)
# TODO: Finish
# Check that the correct UTC offsets are given for common timezones for today
assert dates.get_utc_offset("US/Pacific", today) in {
timedelta(-1, 57600),
timedelta(-1, 61200),
}
assert dates.get_utc_offset("Europe/London", today) in {
timedelta(0, 3600), # BST
timedelta(0, 0),
}
assert dates.get_utc_offset("Africa/Algiers", today) == timedelta(0, 3600)
# Check that the correct UTC offsets are given for common timezones when ``date`` is not given
assert dates.get_utc_offset("US/Pacific") in {
timedelta(-1, 57600),
timedelta(-1, 61200),
}
assert dates.get_utc_offset("Europe/London") in {
timedelta(0, 3600), # BST
timedelta(0, 0),
}
assert dates.get_utc_offset("Africa/Algiers") == timedelta(0, 3600)
def test_converting_timezone():
# No matter what timezone we convert to the timestamp should be the same
for tz in pytz.all_timezones:
assert test_date.astimezone(dates.get_timezone(tz, test_date),
).timestamp() == test_date.timestamp() == 845173200.0
if dates.get_utc_offset(tz, test_date): # otherwise the timezone stayed as UTC
assert test_date.astimezone(dates.get_timezone(tz, test_date)).hour != test_date.hour
# And again with today's date
assert today.astimezone(dates.get_timezone(tz, today)).timestamp() == today.timestamp()
if dates.get_utc_offset(tz, today): # otherwise the timezone stayed as UTC
assert today.astimezone(dates.get_timezone(tz, today)).hour != today.hour
def test_utc_timestamp_to_datetime():
# Going from a datetime object to timezone and back should give us the same object
for tz in pytz.all_timezones:
tzinfo = dates.get_timezone(tz, test_date)
dt = test_date.astimezone(tzinfo)
assert dates.utc_timestamp_to_datetime(dt.timestamp(), tzinfo) == dt
# And again with today's date
tzinfo = dates.get_timezone(tz, today)
dt = today.astimezone(tzinfo)
assert dates.utc_timestamp_to_datetime(dt.timestamp(), tzinfo) == dt
@pytest.mark.xfail()
def test_set_timezone():
# Setting the timezone should change the timestamp
for tz in pytz.all_timezones:
if dates.get_utc_offset(tz, today): # otherwise the timezone stayed as UTC
# ensure timestamp did change
target_tz = dates.get_timezone(tz, today)
assert target_tz is not None
assert dates.set_timezone(today, target_tz).timestamp() != today.timestamp()
# Difference between "today" and the new timezone should be the timezone difference
target_tz = dates.get_timezone(tz, today)
assert target_tz is not None
utc_offset = dates.get_utc_offset(tz, today)
assert utc_offset is not None
as_seconds = dates.set_timezone(today, target_tz).timestamp() + utc_offset.total_seconds()
assert as_seconds == today.timestamp()
if tz in {
"America/Punta_Arenas",
"America/Santiago",
"Antarctica/Palmer",
"Chile/Continental",
"Chile/EasterIsland",
"Pacific/Easter",
}:
continue
if dates.get_utc_offset(tz, test_date): # otherwise the timezone stayed as UTC
# print(dates.set_timezone(test_date, get_timezone(tz, test_date)).timestamp())
# print(repr(test_date))
# print(get_utc_offset(tz, test_date).total_seconds())
# print(test_date.timestamp())
# print(repr(dates.set_timezone(test_date, get_timezone(tz, test_date))))
# print(dates.set_timezone(test_date, get_timezone(tz, test_date)).timestamp())
# print(dates.set_timezone(test_date, get_timezone(tz, test_date)).timestamp() + get_utc_offset(tz, test_date).total_seconds())
# print(get_utc_offset(tz, test_date).total_seconds())
# print(
# dates.set_timezone(test_date, get_timezone(tz, test_date)).timestamp() +
# get_utc_offset(tz, test_date).total_seconds()
#
# )
target_tz = dates.get_timezone(tz, test_date)
assert target_tz is not None
offset = dates.get_utc_offset(tz, test_date)
assert offset is not None
as_seconds = dates.set_timezone(test_date, target_tz).timestamp() + offset.total_seconds()
assert as_seconds == test_date.timestamp()
except ImportError:
def test_utc_offset_no_pytz():
with pytest.raises(
ImportError,
match=r"'get_utc_offset' requires pytz \(.*\), but it could not be imported",
):
dates.get_utc_offset # pylint: disable=pointless-statement
with pytest.raises(
ImportError,
match=r"'get_utc_offset' requires pytz \(.*\), but it could not be imported",
):
# this package
from domdf_python_tools.dates import get_utc_offset # noqa: F401
# TODO: Finish
# import sys
# from importlib.abc import MetaPathFinder
#
# class NoPytzPath(MetaPathFinder):
#
# def find_spec(self, fullname, path, target=None):
# if fullname == "pytz":
# raise ModuleNotFoundError(f"No module named '{fullname}'")
#
#
# class TestDatesNoPytz:
#
# def test_import_pytz(self, fake_no_pytz):
# with pytest.raises(ImportError):
# import pytz
# # this package
# from domdf_python_tools import dates
#
# with pytest.raises(ImportError):
# # 3rd party
# import pytz
#
# def test_utc_offset_no_pytz(self, fake_no_pytz):
# # this package
# from domdf_python_tools import dates
#
# print(sys.modules.keys())
#
# with pytest.raises(
# ImportError,
# match=r"'get_utc_offset' requires pytz \(.*\), but it could not be imported",
# ):
# dates.get_utc_offset # pylint: disable=pointless-statement
#
# with pytest.raises(
# ImportError,
# match=r"'get_utc_offset' requires pytz \(.*\), but it could not be imported",
# ):
#
# # this package
# from domdf_python_tools.dates import get_utc_offset
@pytest.mark.parametrize("month_idx, month", enumerate(dates.month_full_names))
def test_parse_month(month_idx: int, month: str):
month_idx += 1 # to make 1-indexed
for i in range(3, len(month)):
assert dates.parse_month(month.lower()[:i]) == month
assert dates.parse_month(month.upper()[:i]) == month
assert dates.parse_month(month.capitalize()[:i]) == month
assert dates.parse_month(month_idx) == month
def test_parse_month_errors():
for value in ["abc", 0, '0', -1, "-1", 13, "13"]:
with pytest.raises(ValueError, match=fr"The given month \({value!r}\) is not recognised."):
dates.parse_month(value) # type: ignore
@pytest.mark.parametrize("month_idx, month", enumerate(dates.month_full_names))
def test_get_month_number_from_name(month_idx: int, month: str):
month_idx += 1 # to make 1-indexed
for i in range(3, len(month)):
assert dates.get_month_number(month.lower()[:i]) == month_idx
assert dates.get_month_number(month.upper()[:i]) == month_idx
assert dates.get_month_number(month.capitalize()[:i]) == month_idx
assert dates.get_month_number(month) == month_idx
@count(13, 1)
def test_get_month_number_from_no(count: int):
assert dates.get_month_number(count) == count
@pytest.mark.parametrize(
"value, match",
[
(0, "The given month (0) is not recognised."),
(-1, "The given month (-1) is not recognised."),
(13, "The given month (13) is not recognised."),
("abc", "The given month ('abc') is not recognised."),
('0', "The given month ('0') is not recognised."),
("-1", "The given month ('-1') is not recognised."),
("13", "The given month ('13') is not recognised."),
]
)
def test_get_month_number_errors(value: Union[str, int], match: str):
with pytest.raises(ValueError, match=re.escape(match)):
dates.get_month_number(value)
def test_check_date():
for month_idx, month in enumerate(dates.month_full_names):
month_idx += 1 # to make 1-indexed
if month_idx in {9, 4, 6, 11}:
max_day = 30
elif month_idx == 2:
max_day = 28
else:
max_day = 31
for day in range(-5, 36):
if month_idx == 2 and day == 29:
for i in range(3, len(month)):
assert dates.check_date(month.lower()[:i], 29)
assert dates.check_date(month.upper()[:i], 29)
assert dates.check_date(month.capitalize()[:i], 29)
assert not dates.check_date(month.lower()[:i], 29, False)
assert not dates.check_date(month.upper()[:i], 29, False)
assert not dates.check_date(month.capitalize()[:i], 29, False)
assert dates.check_date(month, 29)
assert not dates.check_date(month, 29, False)
elif 0 < day <= max_day:
for i in range(3, len(month)):
assert dates.check_date(month.lower()[:i], day)
assert dates.check_date(month.upper()[:i], day)
assert dates.check_date(month.capitalize()[:i], day)
assert dates.check_date(month, day)
else:
for i in range(3, len(month)):
assert not dates.check_date(month.lower()[:i], day)
assert not dates.check_date(month.upper()[:i], day)
assert not dates.check_date(month.capitalize()[:i], day)
assert not dates.check_date(month, day)
@pytest.mark.parametrize(
"date",
[
date(2000, 4, 23),
date(2001, 4, 15),
date(2002, 3, 31),
date(2003, 4, 20),
date(2004, 4, 11),
date(2005, 3, 27),
date(2006, 4, 16),
date(2007, 4, 8),
date(2008, 3, 23),
date(2009, 4, 12),
date(2010, 4, 4),
date(2011, 4, 24),
date(2012, 4, 8),
date(2013, 3, 31),
date(2014, 4, 20),
date(2015, 4, 5),
date(2016, 3, 27),
date(2017, 4, 16),
date(2018, 4, 1),
date(2019, 4, 21),
date(2020, 4, 12),
date(2021, 4, 4),
]
)
def test_calc_easter(date):
assert dates.calc_easter(date.year) == date
@pytest.mark.parametrize(
"the_date, result",
[
(date(month=3, day=2, year=2019), False),
(date(month=4, day=7, year=2020), True),
(date(month=8, day=17, year=2015), True),
(date(month=12, day=25, year=2030), False),
(date(month=3, day=29, year=2019), False),
(date(month=3, day=30, year=2019), False),
(date(month=3, day=31, year=2019), True),
(date(month=4, day=1, year=2019), True),
(date(month=10, day=25, year=2019), True),
(date(month=10, day=26, year=2019), True),
(date(month=10, day=27, year=2019), False),
(date(month=10, day=28, year=2019), False),
(date(month=3, day=27, year=2020), False),
(date(month=3, day=28, year=2020), False),
(date(month=3, day=29, year=2020), True),
(date(month=3, day=30, year=2020), True),
(date(month=10, day=23, year=2020), True),
(date(month=10, day=24, year=2020), True),
(date(month=10, day=25, year=2020), False),
(date(month=10, day=26, year=2020), False),
(date(month=3, day=26, year=2021), False),
(date(month=3, day=27, year=2021), False),
(date(month=3, day=28, year=2021), True),
(date(month=3, day=29, year=2021), True),
(date(month=10, day=29, year=2021), True),
(date(month=10, day=30, year=2021), True),
(date(month=10, day=31, year=2021), False),
(date(month=11, day=1, year=2021), False),
(date(month=3, day=25, year=2022), False),
(date(month=3, day=26, year=2022), False),
(date(month=3, day=27, year=2022), True),
(date(month=3, day=28, year=2022), True),
(date(month=10, day=28, year=2022), True),
(date(month=10, day=29, year=2022), True),
(date(month=10, day=30, year=2022), False),
(date(month=10, day=31, year=2022), False),
(date(month=3, day=24, year=2023), False),
(date(month=3, day=25, year=2023), False),
(date(month=3, day=26, year=2023), True),
(date(month=3, day=27, year=2023), True),
(date(month=10, day=27, year=2023), True),
(date(month=10, day=28, year=2023), True),
(date(month=10, day=29, year=2023), False),
(date(month=10, day=30, year=2023), False),
(date(month=3, day=29, year=2024), False),
(date(month=3, day=30, year=2024), False),
(date(month=3, day=31, year=2024), True),
(date(month=4, day=1, year=2024), True),
(date(month=10, day=25, year=2024), True),
(date(month=10, day=26, year=2024), True),
(date(month=10, day=27, year=2024), False),
(date(month=10, day=28, year=2024), False),
]
)
def test_is_bst(the_date, result: bool):
assert dates.is_bst(the_date) is result
|
