test_behavior.py

from __future__ import annotations

import datetime as datetime_
import importlib
import pickle
import types
import zoneinfo

import pytest

from copy import deepcopy
from datetime import date
from datetime import datetime
from datetime import time

import pytest

import pendulum

from pendulum import timezone
from pendulum.tz.timezone import Timezone


@pytest.fixture
def p():
    return pendulum.datetime(2016, 8, 27, 12, 34, 56, 123456, tz="Europe/Paris")


@pytest.fixture
def p1(p):
    return p.in_tz("America/New_York")


@pytest.fixture
def dt():
    tz = timezone("Europe/Paris")

    return tz.convert(datetime(2016, 8, 27, 12, 34, 56, 123456))


def test_timetuple(p, dt):
    assert dt.timetuple() == p.timetuple()


def test_utctimetuple(p, dt):
    assert dt.utctimetuple() == p.utctimetuple()


def test_date(p, dt):
    assert p.date() == dt.date()


def test_time(p, dt):
    assert p.time() == dt.time()


def test_timetz(p, dt):
    assert p.timetz() == dt.timetz()


def test_astimezone(p, dt, p1):
    assert p.astimezone(p1.tzinfo) == dt.astimezone(p1.tzinfo)


def test_ctime(p, dt):
    assert p.ctime() == dt.ctime()


def test_isoformat(p, dt):
    assert p.isoformat() == dt.isoformat()


def test_utcoffset(p, dt):
    assert p.utcoffset() == dt.utcoffset()


def test_tzname(p, dt):
    assert p.tzname() == dt.tzname()


def test_dst(p, dt):
    assert p.dst() == dt.dst()


def test_toordinal(p, dt):
    assert p.toordinal() == dt.toordinal()


def test_weekday(p, dt):
    assert p.weekday() == dt.weekday()


def test_isoweekday(p, dt):
    assert p.isoweekday() == dt.isoweekday()


def test_isocalendar(p, dt):
    assert p.isocalendar() == dt.isocalendar()


def test_fromtimestamp():
    p = pendulum.DateTime.fromtimestamp(0, pendulum.UTC)
    dt = datetime.fromtimestamp(0, pendulum.UTC)

    assert p == dt


def test_utcfromtimestamp():
    p = pendulum.DateTime.utcfromtimestamp(0)
    dt = datetime.utcfromtimestamp(0)

    assert p == dt


@pytest.mark.parametrize("exception_type", [OSError, OverflowError])
def test_fromtimestamp_falls_back_for_negative_timestamp(monkeypatch, exception_type):
    pendulum_datetime_module = importlib.import_module("pendulum.datetime")

    class FakeDateTime(datetime_.datetime):
        @classmethod
        def fromtimestamp(cls, t: float, tz: datetime_.tzinfo | None = None):
            if t == -43201:
                raise exception_type("Invalid argument")

            return super().fromtimestamp(t, tz=tz)

    monkeypatch.setattr(
        pendulum_datetime_module,
        "datetime",
        types.SimpleNamespace(datetime=FakeDateTime, timedelta=datetime_.timedelta),
    )

    p = pendulum.DateTime.fromtimestamp(-43201, pendulum.UTC)

    assert p == pendulum.datetime(1969, 12, 31, 11, 59, 59)
    assert p.timezone_name == "UTC"


@pytest.mark.parametrize("exception_type", [OSError, OverflowError])
def test_utcfromtimestamp_falls_back_for_negative_timestamp(monkeypatch, exception_type):
    pendulum_datetime_module = importlib.import_module("pendulum.datetime")

    class FakeDateTime(datetime_.datetime):
        @classmethod
        def utcfromtimestamp(cls, t: float):
            if t == -43201:
                raise exception_type("Invalid argument")

            return super().utcfromtimestamp(t)

    monkeypatch.setattr(
        pendulum_datetime_module,
        "datetime",
        types.SimpleNamespace(datetime=FakeDateTime, timedelta=datetime_.timedelta),
    )

    p = pendulum.DateTime.utcfromtimestamp(-43201)

    assert p == pendulum.naive(1969, 12, 31, 11, 59, 59)
    assert p.tzinfo is None


def test_fromordinal():
    assert datetime.fromordinal(730120) == pendulum.DateTime.fromordinal(730120)


def test_combine():
    p = pendulum.DateTime.combine(date(2016, 1, 1), time(1, 2, 3, 123456))
    dt = datetime.combine(date(2016, 1, 1), time(1, 2, 3, 123456))

    assert p == dt


def test_hash(p, dt):
    assert hash(p) == hash(dt)

    dt1 = pendulum.datetime(2016, 8, 27, 12, 34, 56, 123456, tz="Europe/Paris")
    dt2 = pendulum.datetime(2016, 8, 27, 12, 34, 56, 123456, tz="Europe/Paris")
    dt3 = pendulum.datetime(2016, 8, 27, 12, 34, 56, 123456, tz="America/Toronto")

    assert hash(dt1) == hash(dt2)
    assert hash(dt1) != hash(dt3)


def test_pickle():
    dt1 = pendulum.datetime(2016, 8, 27, 12, 34, 56, 123456, tz="Europe/Paris")
    s = pickle.dumps(dt1)
    dt2 = pickle.loads(s)

    assert dt1 == dt2


def test_pickle_with_integer_tzinfo():
    dt1 = pendulum.datetime(2016, 8, 27, 12, 34, 56, 123456, tz=0)
    s = pickle.dumps(dt1)
    dt2 = pickle.loads(s)

    assert dt1 == dt2


def test_proper_dst():
    dt = pendulum.datetime(1941, 7, 1, tz="Europe/Amsterdam")
    native_dt = datetime(1941, 7, 1, tzinfo=zoneinfo.ZoneInfo("Europe/Amsterdam"))

    assert dt.dst() == native_dt.dst()


def test_deepcopy():
    dt = pendulum.datetime(1941, 7, 1, tz="Europe/Amsterdam")

    assert dt == deepcopy(dt)


def test_deepcopy_on_transition():
    dt = pendulum.datetime(2023, 11, 5, 1, 0, 0, tz="US/Pacific")
    clone = deepcopy(dt)

    assert dt == clone
    assert dt.offset == clone.offset


def test_pickle_timezone():
    dt1 = pendulum.timezone("Europe/Amsterdam")
    s = pickle.dumps(dt1)
    dt2 = pickle.loads(s)

    assert isinstance(dt2, Timezone)

    dt1 = pendulum.timezone("UTC")
    s = pickle.dumps(dt1)
    dt2 = pickle.loads(s)

    assert isinstance(dt2, Timezone)