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"""Tests for Free/Busy component."""
from __future__ import annotations
from collections.abc import Generator
import datetime
import inspect
import pytest
from freezegun import freeze_time
from ical.calendar import Calendar
from ical.calendar_stream import IcsCalendarStream
from ical.exceptions import CalendarParseError
from ical.timezone import IcsTimezoneInfo, Observance, Timezone
from ical.types import UtcOffset
from ical.types.recur import Frequency, Recur, Weekday, WeekdayValue
from ical.tzif.timezoneinfo import TimezoneInfoError
TEST_RECUR = Recur(
freq=Frequency.YEARLY,
by_month=[10],
by_day=[WeekdayValue(Weekday.SUNDAY, occurrence=-1)],
until=datetime.datetime(2006, 10, 29, 6, 0, 0),
)
def test_requires_subcompnent() -> None:
"""Test Timezone constructor."""
with pytest.raises(CalendarParseError, match=r"At least one standard or daylight.*"):
Timezone(tz_id="America/New_York")
def test_daylight() -> None:
"""Test a Timezone object with a daylight observance."""
timezone = Timezone(
tz_id="America/New_York",
last_modified=datetime.datetime(2005, 8, 9, 5),
daylight=[
Observance(
start=datetime.datetime(1967, 10, 29, 2, 0, 0, 0),
tz_offset_to=UtcOffset(datetime.timedelta(hours=-4)),
tz_offset_from=UtcOffset(datetime.timedelta(hours=-5)),
tz_name=["edt"],
rrule=TEST_RECUR,
),
],
)
assert len(timezone.daylight) == 1
assert timezone.daylight[0].tz_name == ["edt"]
tz_info = IcsTimezoneInfo.from_timezone(timezone)
value = datetime.datetime(1967, 10, 29, 1, 59, 0, 0, tzinfo=tz_info)
assert not tz_info.tzname(value)
assert not tz_info.utcoffset(value)
assert not tz_info.dst(value)
value = datetime.datetime(1967, 10, 29, 2, 00, 0, 0, tzinfo=tz_info)
assert tz_info.tzname(value) == "edt"
assert tz_info.utcoffset(value) == datetime.timedelta(hours=-4)
assert tz_info.dst(value) == datetime.timedelta(hours=1)
def test_timezone_observence_start_time_validation() -> None:
"""Verify that a start time must be in local time."""
with pytest.raises(
CalendarParseError, match=r".*Start time must be in local time format*"
):
Observance(
start=datetime.datetime(1967, 10, 29, 2, tzinfo=datetime.timezone.utc),
tz_offset_to=UtcOffset(datetime.timedelta(hours=-5)),
tz_offset_from=UtcOffset(datetime.timedelta(hours=-4)),
tz_name=["est"],
rrule=TEST_RECUR,
)
@freeze_time("2022-08-22 12:30:00")
def test_from_tzif_timezoneinfo_with_dst(
mock_prodid: Generator[None, None, None]
) -> None:
"""Verify a timezone created from a tzif timezone info with DST information."""
timezone = Timezone.from_tzif("America/New_York")
calendar = Calendar()
calendar.timezones.append(timezone)
stream = IcsCalendarStream(calendars=[calendar])
assert stream.ics() == inspect.cleandoc(
"""
BEGIN:VCALENDAR
PRODID:-//example//1.2.3
VERSION:2.0
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:STANDARD
DTSTART:20101107T020000
TZOFFSETTO:-0500
TZOFFSETFROM:-0400
RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11
TZNAME:EST
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:20100314T020000
TZOFFSETTO:-0400
TZOFFSETFROM:-0500
RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3
TZNAME:EDT
END:DAYLIGHT
END:VTIMEZONE
END:VCALENDAR
"""
)
tz_info = IcsTimezoneInfo.from_timezone(timezone)
value = datetime.datetime(2010, 11, 7, 1, 59, 0)
assert tz_info.tzname(value) == "EDT"
assert tz_info.utcoffset(value) == datetime.timedelta(hours=-4)
assert tz_info.dst(value) == datetime.timedelta(hours=1)
value = datetime.datetime(2010, 11, 7, 2, 0, 0)
assert tz_info.tzname(value) == "EST"
assert tz_info.utcoffset(value) == datetime.timedelta(hours=-5)
assert tz_info.dst(value) == datetime.timedelta(hours=0)
value = datetime.datetime(2011, 3, 13, 1, 59, 0)
assert tz_info.tzname(value) == "EST"
assert tz_info.utcoffset(value) == datetime.timedelta(hours=-5)
assert tz_info.dst(value) == datetime.timedelta(hours=0)
value = datetime.datetime(2011, 3, 14, 2, 0, 0)
assert tz_info.tzname(value) == "EDT"
assert tz_info.utcoffset(value) == datetime.timedelta(hours=-4)
assert tz_info.dst(value) == datetime.timedelta(hours=1)
@freeze_time("2022-08-22 12:30:00")
def test_from_tzif_timezoneinfo_fixed_offset(
mock_prodid: Generator[None, None, None]
) -> None:
"""Verify a timezone created from a tzif timezone info with a fixed offset"""
timezone = Timezone.from_tzif("Asia/Tokyo")
calendar = Calendar()
calendar.timezones.append(timezone)
stream = IcsCalendarStream(calendars=[calendar])
assert stream.ics() == inspect.cleandoc(
"""
BEGIN:VCALENDAR
PRODID:-//example//1.2.3
VERSION:2.0
BEGIN:VTIMEZONE
TZID:Asia/Tokyo
BEGIN:STANDARD
DTSTART:20100101T000000
TZOFFSETTO:0900
TZOFFSETFROM:0900
TZNAME:JST
END:STANDARD
END:VTIMEZONE
END:VCALENDAR
"""
)
def test_invalid_tzif_key() -> None:
"""Test creating a timezone object from tzif data that does not exist."""
with pytest.raises(TimezoneInfoError, match=r"Unable to find timezone"):
Timezone.from_tzif("invalid")
@freeze_time("2022-08-22 12:30:00")
def test_clear_old_dtstamp(
mock_prodid: Generator[None, None, None]
) -> None:
"""Verify a timezone created from a tzif timezone info with a fixed offset"""
stream = IcsCalendarStream.from_ics(inspect.cleandoc("""
BEGIN:VCALENDAR
PRODID:-//example//1.2.3
VERSION:2.0
BEGIN:VTIMEZONE
DTSTAMP:20220822T123000
TZID:Asia/Tokyo
BEGIN:STANDARD
DTSTART:20100101T000000
TZOFFSETTO:0900
TZOFFSETFROM:0900
TZNAME:JST
END:STANDARD
END:VTIMEZONE
END:VCALENDAR
"""))
# DTSTAMP is omitted from the output
assert stream.ics() == inspect.cleandoc("""
BEGIN:VCALENDAR
PRODID:-//example//1.2.3
VERSION:2.0
BEGIN:VTIMEZONE
TZID:Asia/Tokyo
BEGIN:STANDARD
DTSTART:20100101T000000
TZOFFSETTO:0900
TZOFFSETFROM:0900
TZNAME:JST
END:STANDARD
END:VTIMEZONE
END:VCALENDAR
""")
|
