1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
| """
| Tests for the following offsets:
| - Week
| - WeekOfMonth
| - LastWeekOfMonth
| """
| from __future__ import annotations
|
| from datetime import (
| datetime,
| timedelta,
| )
|
| import pytest
|
| from pandas._libs.tslibs import Timestamp
| from pandas._libs.tslibs.offsets import (
| Day,
| LastWeekOfMonth,
| Week,
| WeekOfMonth,
| )
|
| from pandas.tests.tseries.offsets.common import (
| WeekDay,
| assert_is_on_offset,
| assert_offset_equal,
| )
|
|
| class TestWeek:
| def test_repr(self):
| assert repr(Week(weekday=0)) == "<Week: weekday=0>"
| assert repr(Week(n=-1, weekday=0)) == "<-1 * Week: weekday=0>"
| assert repr(Week(n=-2, weekday=0)) == "<-2 * Weeks: weekday=0>"
|
| def test_corner(self):
| with pytest.raises(ValueError, match="Day must be"):
| Week(weekday=7)
|
| with pytest.raises(ValueError, match="Day must be"):
| Week(weekday=-1)
|
| def test_is_anchored(self):
| assert Week(weekday=0).is_anchored()
| assert not Week().is_anchored()
| assert not Week(2, weekday=2).is_anchored()
| assert not Week(2).is_anchored()
|
| offset_cases = []
| # not business week
| offset_cases.append(
| (
| Week(),
| {
| datetime(2008, 1, 1): datetime(2008, 1, 8),
| datetime(2008, 1, 4): datetime(2008, 1, 11),
| datetime(2008, 1, 5): datetime(2008, 1, 12),
| datetime(2008, 1, 6): datetime(2008, 1, 13),
| datetime(2008, 1, 7): datetime(2008, 1, 14),
| },
| )
| )
|
| # Mon
| offset_cases.append(
| (
| Week(weekday=0),
| {
| datetime(2007, 12, 31): datetime(2008, 1, 7),
| datetime(2008, 1, 4): datetime(2008, 1, 7),
| datetime(2008, 1, 5): datetime(2008, 1, 7),
| datetime(2008, 1, 6): datetime(2008, 1, 7),
| datetime(2008, 1, 7): datetime(2008, 1, 14),
| },
| )
| )
|
| # n=0 -> roll forward. Mon
| offset_cases.append(
| (
| Week(0, weekday=0),
| {
| datetime(2007, 12, 31): datetime(2007, 12, 31),
| datetime(2008, 1, 4): datetime(2008, 1, 7),
| datetime(2008, 1, 5): datetime(2008, 1, 7),
| datetime(2008, 1, 6): datetime(2008, 1, 7),
| datetime(2008, 1, 7): datetime(2008, 1, 7),
| },
| )
| )
|
| # n=0 -> roll forward. Mon
| offset_cases.append(
| (
| Week(-2, weekday=1),
| {
| datetime(2010, 4, 6): datetime(2010, 3, 23),
| datetime(2010, 4, 8): datetime(2010, 3, 30),
| datetime(2010, 4, 5): datetime(2010, 3, 23),
| },
| )
| )
|
| @pytest.mark.parametrize("case", offset_cases)
| def test_offset(self, case):
| offset, cases = case
| for base, expected in cases.items():
| assert_offset_equal(offset, base, expected)
|
| @pytest.mark.parametrize("weekday", range(7))
| def test_is_on_offset(self, weekday):
| offset = Week(weekday=weekday)
|
| for day in range(1, 8):
| date = datetime(2008, 1, day)
| expected = day % 7 == weekday
| assert_is_on_offset(offset, date, expected)
|
| @pytest.mark.parametrize(
| "n,date",
| [
| (2, "1862-01-13 09:03:34.873477378+0210"),
| (-2, "1856-10-24 16:18:36.556360110-0717"),
| ],
| )
| def test_is_on_offset_weekday_none(self, n, date):
| # GH 18510 Week with weekday = None, normalize = False
| # should always be is_on_offset
| offset = Week(n=n, weekday=None)
| ts = Timestamp(date, tz="Africa/Lusaka")
| fast = offset.is_on_offset(ts)
| slow = (ts + offset) - offset == ts
| assert fast == slow
|
| def test_week_add_invalid(self):
| # Week with weekday should raise TypeError and _not_ AttributeError
| # when adding invalid offset
| offset = Week(weekday=1)
| other = Day()
| with pytest.raises(TypeError, match="Cannot add"):
| offset + other
|
|
| class TestWeekOfMonth:
| def test_constructor(self):
| with pytest.raises(ValueError, match="^Week"):
| WeekOfMonth(n=1, week=4, weekday=0)
|
| with pytest.raises(ValueError, match="^Week"):
| WeekOfMonth(n=1, week=-1, weekday=0)
|
| with pytest.raises(ValueError, match="^Day"):
| WeekOfMonth(n=1, week=0, weekday=-1)
|
| with pytest.raises(ValueError, match="^Day"):
| WeekOfMonth(n=1, week=0, weekday=-7)
|
| def test_repr(self):
| assert (
| repr(WeekOfMonth(weekday=1, week=2)) == "<WeekOfMonth: week=2, weekday=1>"
| )
|
| def test_offset(self):
| date1 = datetime(2011, 1, 4) # 1st Tuesday of Month
| date2 = datetime(2011, 1, 11) # 2nd Tuesday of Month
| date3 = datetime(2011, 1, 18) # 3rd Tuesday of Month
| date4 = datetime(2011, 1, 25) # 4th Tuesday of Month
|
| # see for loop for structure
| test_cases = [
| (-2, 2, 1, date1, datetime(2010, 11, 16)),
| (-2, 2, 1, date2, datetime(2010, 11, 16)),
| (-2, 2, 1, date3, datetime(2010, 11, 16)),
| (-2, 2, 1, date4, datetime(2010, 12, 21)),
| (-1, 2, 1, date1, datetime(2010, 12, 21)),
| (-1, 2, 1, date2, datetime(2010, 12, 21)),
| (-1, 2, 1, date3, datetime(2010, 12, 21)),
| (-1, 2, 1, date4, datetime(2011, 1, 18)),
| (0, 0, 1, date1, datetime(2011, 1, 4)),
| (0, 0, 1, date2, datetime(2011, 2, 1)),
| (0, 0, 1, date3, datetime(2011, 2, 1)),
| (0, 0, 1, date4, datetime(2011, 2, 1)),
| (0, 1, 1, date1, datetime(2011, 1, 11)),
| (0, 1, 1, date2, datetime(2011, 1, 11)),
| (0, 1, 1, date3, datetime(2011, 2, 8)),
| (0, 1, 1, date4, datetime(2011, 2, 8)),
| (0, 0, 1, date1, datetime(2011, 1, 4)),
| (0, 1, 1, date2, datetime(2011, 1, 11)),
| (0, 2, 1, date3, datetime(2011, 1, 18)),
| (0, 3, 1, date4, datetime(2011, 1, 25)),
| (1, 0, 0, date1, datetime(2011, 2, 7)),
| (1, 0, 0, date2, datetime(2011, 2, 7)),
| (1, 0, 0, date3, datetime(2011, 2, 7)),
| (1, 0, 0, date4, datetime(2011, 2, 7)),
| (1, 0, 1, date1, datetime(2011, 2, 1)),
| (1, 0, 1, date2, datetime(2011, 2, 1)),
| (1, 0, 1, date3, datetime(2011, 2, 1)),
| (1, 0, 1, date4, datetime(2011, 2, 1)),
| (1, 0, 2, date1, datetime(2011, 1, 5)),
| (1, 0, 2, date2, datetime(2011, 2, 2)),
| (1, 0, 2, date3, datetime(2011, 2, 2)),
| (1, 0, 2, date4, datetime(2011, 2, 2)),
| (1, 2, 1, date1, datetime(2011, 1, 18)),
| (1, 2, 1, date2, datetime(2011, 1, 18)),
| (1, 2, 1, date3, datetime(2011, 2, 15)),
| (1, 2, 1, date4, datetime(2011, 2, 15)),
| (2, 2, 1, date1, datetime(2011, 2, 15)),
| (2, 2, 1, date2, datetime(2011, 2, 15)),
| (2, 2, 1, date3, datetime(2011, 3, 15)),
| (2, 2, 1, date4, datetime(2011, 3, 15)),
| ]
|
| for n, week, weekday, dt, expected in test_cases:
| offset = WeekOfMonth(n, week=week, weekday=weekday)
| assert_offset_equal(offset, dt, expected)
|
| # try subtracting
| result = datetime(2011, 2, 1) - WeekOfMonth(week=1, weekday=2)
| assert result == datetime(2011, 1, 12)
|
| result = datetime(2011, 2, 3) - WeekOfMonth(week=0, weekday=2)
| assert result == datetime(2011, 2, 2)
|
| on_offset_cases = [
| (0, 0, datetime(2011, 2, 7), True),
| (0, 0, datetime(2011, 2, 6), False),
| (0, 0, datetime(2011, 2, 14), False),
| (1, 0, datetime(2011, 2, 14), True),
| (0, 1, datetime(2011, 2, 1), True),
| (0, 1, datetime(2011, 2, 8), False),
| ]
|
| @pytest.mark.parametrize("case", on_offset_cases)
| def test_is_on_offset(self, case):
| week, weekday, dt, expected = case
| offset = WeekOfMonth(week=week, weekday=weekday)
| assert offset.is_on_offset(dt) == expected
|
| @pytest.mark.parametrize(
| "n,week,date,tz",
| [
| (2, 2, "1916-05-15 01:14:49.583410462+0422", "Asia/Qyzylorda"),
| (-3, 1, "1980-12-08 03:38:52.878321185+0500", "Asia/Oral"),
| ],
| )
| def test_is_on_offset_nanoseconds(self, n, week, date, tz):
| # GH 18864
| # Make sure that nanoseconds don't trip up is_on_offset (and with it apply)
| offset = WeekOfMonth(n=n, week=week, weekday=0)
| ts = Timestamp(date, tz=tz)
| fast = offset.is_on_offset(ts)
| slow = (ts + offset) - offset == ts
| assert fast == slow
|
|
| class TestLastWeekOfMonth:
| def test_constructor(self):
| with pytest.raises(ValueError, match="^N cannot be 0"):
| LastWeekOfMonth(n=0, weekday=1)
|
| with pytest.raises(ValueError, match="^Day"):
| LastWeekOfMonth(n=1, weekday=-1)
|
| with pytest.raises(ValueError, match="^Day"):
| LastWeekOfMonth(n=1, weekday=7)
|
| def test_offset(self):
| # Saturday
| last_sat = datetime(2013, 8, 31)
| next_sat = datetime(2013, 9, 28)
| offset_sat = LastWeekOfMonth(n=1, weekday=5)
|
| one_day_before = last_sat + timedelta(days=-1)
| assert one_day_before + offset_sat == last_sat
|
| one_day_after = last_sat + timedelta(days=+1)
| assert one_day_after + offset_sat == next_sat
|
| # Test On that day
| assert last_sat + offset_sat == next_sat
|
| # Thursday
|
| offset_thur = LastWeekOfMonth(n=1, weekday=3)
| last_thurs = datetime(2013, 1, 31)
| next_thurs = datetime(2013, 2, 28)
|
| one_day_before = last_thurs + timedelta(days=-1)
| assert one_day_before + offset_thur == last_thurs
|
| one_day_after = last_thurs + timedelta(days=+1)
| assert one_day_after + offset_thur == next_thurs
|
| # Test on that day
| assert last_thurs + offset_thur == next_thurs
|
| three_before = last_thurs + timedelta(days=-3)
| assert three_before + offset_thur == last_thurs
|
| two_after = last_thurs + timedelta(days=+2)
| assert two_after + offset_thur == next_thurs
|
| offset_sunday = LastWeekOfMonth(n=1, weekday=WeekDay.SUN)
| assert datetime(2013, 7, 31) + offset_sunday == datetime(2013, 8, 25)
|
| on_offset_cases = [
| (WeekDay.SUN, datetime(2013, 1, 27), True),
| (WeekDay.SAT, datetime(2013, 3, 30), True),
| (WeekDay.MON, datetime(2013, 2, 18), False), # Not the last Mon
| (WeekDay.SUN, datetime(2013, 2, 25), False), # Not a SUN
| (WeekDay.MON, datetime(2013, 2, 25), True),
| (WeekDay.SAT, datetime(2013, 11, 30), True),
| (WeekDay.SAT, datetime(2006, 8, 26), True),
| (WeekDay.SAT, datetime(2007, 8, 25), True),
| (WeekDay.SAT, datetime(2008, 8, 30), True),
| (WeekDay.SAT, datetime(2009, 8, 29), True),
| (WeekDay.SAT, datetime(2010, 8, 28), True),
| (WeekDay.SAT, datetime(2011, 8, 27), True),
| (WeekDay.SAT, datetime(2019, 8, 31), True),
| ]
|
| @pytest.mark.parametrize("case", on_offset_cases)
| def test_is_on_offset(self, case):
| weekday, dt, expected = case
| offset = LastWeekOfMonth(weekday=weekday)
| assert offset.is_on_offset(dt) == expected
|
| @pytest.mark.parametrize(
| "n,weekday,date,tz",
| [
| (4, 6, "1917-05-27 20:55:27.084284178+0200", "Europe/Warsaw"),
| (-4, 5, "2005-08-27 05:01:42.799392561-0500", "America/Rainy_River"),
| ],
| )
| def test_last_week_of_month_on_offset(self, n, weekday, date, tz):
| # GH 19036, GH 18977 _adjust_dst was incorrect for LastWeekOfMonth
| offset = LastWeekOfMonth(n=n, weekday=weekday)
| ts = Timestamp(date, tz=tz)
| slow = (ts + offset) - offset == ts
| fast = offset.is_on_offset(ts)
| assert fast == slow
|
| def test_repr(self):
| assert (
| repr(LastWeekOfMonth(n=2, weekday=1)) == "<2 * LastWeekOfMonths: weekday=1>"
| )
|
|
