def test_passing_string_to_patterns_raises_value_error(self):
try:
# Incorrectly pass a string instead of a list
expand_patterns("Mi 1 MWF 10", 2012)
self.fail("The preceding call should have failed.")
except ValueError:
pass
def test_pattern_periods_follow_sequentially(self):
a, b, c = expand_patterns(["x2", "x1", "x3"],
2012,
template_pattern="Mi 1-8 MWF 10")
# Ensure the lengths of the results match the input pattern
self.assertEqual(len(a), 2)
self.assertEqual(len(b), 1)
self.assertEqual(len(c), 3)
periods = a + b + c
self.assert_periods_naive(periods)
# Expected results of expansion:
self.assertListEqual(periods, [
(datetime.datetime(2012, 10, 5,
10), datetime.datetime(2012, 10, 5, 11)),
(datetime.datetime(2012, 10, 8,
10), datetime.datetime(2012, 10, 8, 11)),
(datetime.datetime(2012, 10, 10,
10), datetime.datetime(2012, 10, 10, 11)),
(datetime.datetime(2012, 10, 12,
10), datetime.datetime(2012, 10, 12, 11)),
(datetime.datetime(2012, 10, 15,
10), datetime.datetime(2012, 10, 15, 11)),
(datetime.datetime(2012, 10, 17,
10), datetime.datetime(2012, 10, 17, 11)),
])
def test_generated_events_use_term_specified_in_pattern(self):
mich_periods, lent_periods, easter_periods = expand_patterns([
"Mi 1 Th 10",
"Le 1 F 9",
"Ea 2 M 1",
], 2012)
self.assertTrue(len(mich_periods), 1)
self.assertTrue(len(lent_periods), 1)
self.assertTrue(len(easter_periods), 1)
self.assert_periods_naive(mich_periods + lent_periods + easter_periods)
[
(m_start, m_end),
] = mich_periods
self.assertEqual(m_start, datetime.datetime(2012, 10, 4, 10))
self.assertEqual(m_end, datetime.datetime(2012, 10, 4, 11))
[
(l_start, l_end),
] = lent_periods
self.assertEqual(l_start, datetime.datetime(2013, 1, 18, 9))
self.assertEqual(l_end, datetime.datetime(2013, 1, 18, 10))
[
(e_start, e_end),
] = easter_periods
self.assertEqual(e_start, datetime.datetime(2013, 5, 6, 13))
self.assertEqual(e_end, datetime.datetime(2013, 5, 6, 14))
def test_timezone_specification_creates_aware_datetimes(self):
london_tz = pytz.timezone("Europe/London")
[[(start, stop)]] = expand_patterns(["Mi 1 F 3"],
2012,
local_timezone=london_tz)
self.assertTrue(timezone.is_aware(start))
self.assertTrue(timezone.is_aware(stop))
self.assertEqual(start.tzinfo.zone, london_tz.zone)
self.assertEqual(stop.tzinfo.zone, london_tz.zone)
def test_multiple_pattern_expansion(self):
"""
Test that expanding semicolon separated patterns works as expected.
"""
periods, = expand_patterns(["Mi1 MWF 10 ; Mi2 F 10"], 2012)
self.assertListEqual(periods, [(datetime.datetime(
2012, 10, 5, 10), datetime.datetime(2012, 10, 5, 11)),
(datetime.datetime(2012, 10, 8, 10),
datetime.datetime(2012, 10, 8, 11)),
(datetime.datetime(2012, 10, 10, 10),
datetime.datetime(2012, 10, 10, 11)),
(datetime.datetime(2012, 10, 12, 10),
datetime.datetime(2012, 10, 12, 11))])
def test_utc_offset_across_bst_boundry(self):
"""
This test verifies that datetimes falling in BST are UTC+1 and datetimes
outside BST (in GMT) are UTC+0.
In 2012, BST was from 25 March to 28 October.
"""
london_tz = pytz.timezone("Europe/London")
[[(bst_start, bst_stop),
(gmt_start, gmt_stop)]] = expand_patterns(["Mi 4 MF 2"],
2012,
local_timezone=london_tz)
# Week 4 Friday is 26th Oct, Monday is 29th Oct
self.assertEqual(bst_start.date(), datetime.date(2012, 10, 26))
self.assertEqual(bst_stop.date(), datetime.date(2012, 10, 26))
self.assertEqual(gmt_start.date(), datetime.date(2012, 10, 29))
self.assertEqual(gmt_stop.date(), datetime.date(2012, 10, 29))
# All the datetimes are aware & in the London zone
for dt in [bst_start, bst_stop, gmt_start, gmt_stop]:
self.assertTrue(timezone.is_aware(dt))
self.assertEqual(dt.tzinfo.zone, london_tz.zone)
# The start of the BST event in BST local time is 2:00PM (14:00)
self.assertEqual(bst_start.hour, 14)
# The start of the BST event in UTC local time is 1:00PM (13:00) (UTC+1 = BST)
self.assertEqual(bst_start.astimezone(pytz.utc).hour, 13)
# The end of the BST event in BST local time is 3:00PM (15:00)
self.assertEqual(bst_stop.hour, 15)
# The end of the BST event in UTC local time is 2:00PM (14:00) (UTC+1 = BST)
self.assertEqual(bst_stop.astimezone(pytz.utc).hour, 14)
# The start of the GMT event in GMT local time is 2:00PM (14:00)
self.assertEqual(gmt_start.hour, 14)
# The start of the GMT event in UTC local time is 2:00PM (14:00) (UTC+0 = GMT)
self.assertEqual(gmt_start.astimezone(pytz.utc).hour, 14)
# The end of the GMT event in GMT local time is 3:00PM (15:00)
self.assertEqual(gmt_stop.hour, 15)
# The end of the GMT event in UTC local time is 3:00PM (15:00) (UTC+0 = GMT)
self.assertEqual(gmt_stop.astimezone(pytz.utc).hour, 15)