1 files changed, 182 insertions, 0 deletions
diff --git a/tests/datetime/test_construct.py b/tests/datetime/test_construct.py
new file mode 100644
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--- /dev/null
+++ b/tests/datetime/test_construct.py
@@ -0,0 +1,182 @@
+from __future__ import annotations
+
+import os
+
+from datetime import datetime
+
+import pytest
+import pytz
+
+from dateutil import tz
+
+import pendulum
+
+from pendulum import DateTime
+from pendulum.tz import timezone
+from pendulum.utils._compat import PYPY
+from tests.conftest import assert_datetime
+
+if not PYPY:
+    import time_machine
+else:
+    time_machine = None
+
+
+@pytest.fixture(autouse=True)
+def _setup():
+    yield
+
+    if os.getenv("TZ"):
+        del os.environ["TZ"]
+
+
+def test_creates_an_instance_default_to_utcnow():
+    now = pendulum.now("UTC")
+    p = pendulum.datetime(
+        now.year, now.month, now.day, now.hour, now.minute, now.second
+    )
+    assert now.timezone_name == p.timezone_name
+
+    assert_datetime(p, now.year, now.month, now.day, now.hour, now.minute, now.second)
+
+
+def test_setting_timezone():
+    tz = "Europe/London"
+    dtz = timezone(tz)
+    dt = datetime.utcnow()
+    offset = dtz.convert(dt).utcoffset().total_seconds() / 3600
+
+    p = pendulum.datetime(dt.year, dt.month, dt.day, tz=dtz)
+    assert p.timezone_name == tz
+    assert p.offset_hours == int(offset)
+
+
+def test_setting_timezone_with_string():
+    tz = "Europe/London"
+    dtz = timezone(tz)
+    dt = datetime.utcnow()
+    offset = dtz.convert(dt).utcoffset().total_seconds() / 3600
+
+    p = pendulum.datetime(dt.year, dt.month, dt.day, tz=tz)
+    assert p.timezone_name == tz
+    assert p.offset_hours == int(offset)
+
+
+def test_today():
+    today = pendulum.today()
+    assert isinstance(today, DateTime)
+
+
+def test_tomorrow():
+    now = pendulum.now().start_of("day")
+    tomorrow = pendulum.tomorrow()
+    assert isinstance(tomorrow, DateTime)
+    assert now.diff(tomorrow).in_days() == 1
+
+
+def test_yesterday():
+    now = pendulum.now().start_of("day")
+    yesterday = pendulum.yesterday()
+
+    assert isinstance(yesterday, DateTime)
+    assert now.diff(yesterday, False).in_days() == -1
+
+
+def test_instance_naive_datetime_defaults_to_utc():
+    now = pendulum.instance(datetime.now())
+    assert now.timezone_name == "UTC"
+
+
+def test_instance_timezone_aware_datetime():
+    now = pendulum.instance(datetime.now(timezone("Europe/Paris")))
+    assert now.timezone_name == "Europe/Paris"
+
+
+def test_instance_timezone_aware_datetime_pytz():
+    now = pendulum.instance(datetime.now(pytz.timezone("Europe/Paris")))
+    assert now.timezone_name == "Europe/Paris"
+
+
+def test_instance_timezone_aware_datetime_any_tzinfo():
+    dt = datetime(2016, 8, 7, 12, 34, 56, tzinfo=tz.gettz("Europe/Paris"))
+    now = pendulum.instance(dt)
+    assert now.timezone_name == "+02:00"
+
+
+def test_now():
+    now = pendulum.now("America/Toronto")
+    in_paris = pendulum.now("Europe/Paris")
+
+    assert now.hour != in_paris.hour
+
+
+if time_machine:
+
+    @time_machine.travel("2016-03-27 00:30:00Z", tick=False)
+    def test_now_dst_off():
+        utc = pendulum.now("UTC")
+        in_paris = pendulum.now("Europe/Paris")
+        in_paris_from_utc = utc.in_tz("Europe/Paris")
+        assert in_paris.hour == 1
+        assert not in_paris.is_dst()
+        assert in_paris.isoformat() == in_paris_from_utc.isoformat()
+
+    @time_machine.travel("2016-03-27 01:30:00Z", tick=False)
+    def test_now_dst_transitioning_on():
+        utc = pendulum.now("UTC")
+        in_paris = pendulum.now("Europe/Paris")
+        in_paris_from_utc = utc.in_tz("Europe/Paris")
+        assert in_paris.hour == 3
+        assert in_paris.is_dst()
+        assert in_paris.isoformat() == in_paris_from_utc.isoformat()
+
+    @time_machine.travel("2016-10-30 00:30:00Z", tick=False)
+    def test_now_dst_on():
+        utc = pendulum.now("UTC")
+        in_paris = pendulum.now("Europe/Paris")
+        in_paris_from_utc = utc.in_tz("Europe/Paris")
+        assert in_paris.hour == 2
+        assert in_paris.is_dst()
+        assert in_paris.isoformat() == in_paris_from_utc.isoformat()
+
+    @time_machine.travel("2016-10-30 01:30:00Z", tick=False)
+    def test_now_dst_transitioning_off():
+        utc = pendulum.now("UTC")
+        in_paris = pendulum.now("Europe/Paris")
+        in_paris_from_utc = utc.in_tz("Europe/Paris")
+        assert in_paris.hour == 2
+        assert not in_paris.is_dst()
+        assert in_paris.isoformat() == in_paris_from_utc.isoformat()
+
+
+def test_now_with_fixed_offset():
+    now = pendulum.now(6)
+
+    assert now.timezone_name == "+06:00"
+
+
+def test_create_with_no_transition_timezone():
+    dt = pendulum.now("Etc/UTC")
+
+    assert dt.timezone_name == "Etc/UTC"
+
+
+def test_create_maintains_microseconds():
+    d = pendulum.datetime(2016, 11, 12, 2, 9, 39, 594000, tz="America/Panama")
+    assert_datetime(d, 2016, 11, 12, 2, 9, 39, 594000)
+
+    d = pendulum.datetime(2316, 11, 12, 2, 9, 39, 857, tz="America/Panama")
+    assert_datetime(d, 2316, 11, 12, 2, 9, 39, 857)
+
+
+def test_second_inaccuracy_on_past_datetimes():
+    dt = pendulum.datetime(1901, 12, 13, 0, 0, 0, 555555, tz="US/Central")
+
+    assert_datetime(dt, 1901, 12, 13, 0, 0, 0, 555555)
+
+
+def test_local():
+    local = pendulum.local(2018, 2, 2, 12, 34, 56, 123456)
+
+    assert_datetime(local, 2018, 2, 2, 12, 34, 56, 123456)
+    assert local.timezone_name == "America/Toronto"