1 files changed, 121 insertions, 0 deletions
diff --git a/tests/interval/test_construct.py b/tests/interval/test_construct.py
new file mode 100644
index 0000000..024e741
--- /dev/null
+++ b/tests/interval/test_construct.py
@@ -0,0 +1,121 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+import pendulum
+
+from tests.conftest import assert_datetime
+
+
+def test_with_datetimes():
+    dt1 = datetime(2000, 1, 1)
+    dt2 = datetime(2000, 1, 31)
+    p = pendulum.interval(dt1, dt2)
+
+    assert isinstance(p.start, pendulum.DateTime)
+    assert isinstance(p.end, pendulum.DateTime)
+    assert_datetime(p.start, 2000, 1, 1)
+    assert_datetime(p.end, 2000, 1, 31)
+
+
+def test_with_pendulum():
+    dt1 = pendulum.DateTime(2000, 1, 1)
+    dt2 = pendulum.DateTime(2000, 1, 31)
+    p = pendulum.interval(dt1, dt2)
+
+    assert_datetime(p.start, 2000, 1, 1)
+    assert_datetime(p.end, 2000, 1, 31)
+
+
+def test_inverted():
+    dt1 = pendulum.DateTime(2000, 1, 1)
+    dt2 = pendulum.DateTime(2000, 1, 31)
+    p = pendulum.interval(dt2, dt1)
+
+    assert_datetime(p.start, 2000, 1, 31)
+    assert_datetime(p.end, 2000, 1, 1)
+
+
+def test_inverted_and_absolute():
+    dt1 = pendulum.DateTime(2000, 1, 1)
+    dt2 = pendulum.DateTime(2000, 1, 31)
+    p = pendulum.interval(dt2, dt1, True)
+
+    assert_datetime(p.start, 2000, 1, 1)
+    assert_datetime(p.end, 2000, 1, 31)
+
+
+def test_accuracy():
+    dt1 = pendulum.DateTime(2000, 11, 20)
+    dt2 = pendulum.DateTime(2000, 11, 25)
+    dt3 = pendulum.DateTime(2016, 11, 5)
+    p1 = pendulum.interval(dt1, dt3)
+    p2 = pendulum.interval(dt2, dt3)
+
+    assert p1.years == 15
+    assert p1.in_years() == 15
+    assert p1.months == 11
+    assert p1.in_months() == 191
+    assert p1.days == 5829
+    assert p1.remaining_days == 2
+    assert p1.in_days() == 5829
+
+    assert p2.years == 15
+    assert p2.in_years() == 15
+    assert p2.months == 11
+    assert p2.in_months() == 191
+    assert p2.days == 5824
+    assert p2.remaining_days == 4
+    assert p2.in_days() == 5824
+
+
+def test_dst_transition():
+    start = pendulum.datetime(2017, 3, 7, tz="America/Toronto")
+    end = start.add(days=6)
+    period = end - start
+
+    assert period.days == 5
+    assert period.seconds == 82800
+
+    assert period.remaining_days == 6
+    assert period.hours == 0
+    assert period.remaining_seconds == 0
+
+    assert period.in_days() == 6
+    assert period.in_hours() == 5 * 24 + 23
+
+
+def test_timedelta_behavior():
+    dt1 = pendulum.DateTime(2000, 11, 20, 1)
+    dt2 = pendulum.DateTime(2000, 11, 25, 2)
+    dt3 = pendulum.DateTime(2016, 11, 5, 3)
+
+    p1 = pendulum.interval(dt1, dt3)
+    p2 = pendulum.interval(dt2, dt3)
+    it1 = p1.as_timedelta()
+    it2 = p2.as_timedelta()
+
+    assert it1.total_seconds() == p1.total_seconds()
+    assert it2.total_seconds() == p2.total_seconds()
+    assert it1.days == p1.days
+    assert it2.days == p2.days
+    assert it1.seconds == p1.seconds
+    assert it2.seconds == p2.seconds
+    assert it1.microseconds == p1.microseconds
+    assert it2.microseconds == p2.microseconds
+
+
+def test_different_timezones_same_time():
+    dt1 = pendulum.datetime(2013, 3, 31, 1, 30, tz="Europe/Paris")
+    dt2 = pendulum.datetime(2013, 4, 1, 1, 30, tz="Europe/Paris")
+    period = dt2 - dt1
+
+    assert period.in_words() == "1 day"
+    assert period.in_hours() == 23
+
+    dt1 = pendulum.datetime(2013, 3, 31, 1, 30, tz="Europe/Paris")
+    dt2 = pendulum.datetime(2013, 4, 1, 1, 30, tz="America/Toronto")
+    period = dt2 - dt1
+
+    assert period.in_words() == "1 day 5 hours"
+    assert period.in_hours() == 29