File: apptest_time.py

package info (click to toggle)
pypy3 7.3.19%2Bdfsg-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 212,236 kB
  • sloc: python: 2,098,316; ansic: 540,565; sh: 21,462; asm: 14,419; cpp: 4,451; makefile: 4,209; objc: 761; xml: 530; exp: 499; javascript: 314; pascal: 244; lisp: 45; csh: 12; awk: 4
file content (681 lines) | stat: -rw-r--r-- 22,565 bytes parent folder | download | duplicates (3)
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
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
# coding: utf-8

import pytest
import sys

# spaceconfig = {"usemodules": ["time", "struct", "binascii", "signal"]}

try:
    import nt as posix
    _WIN32 = True
except ImportError:
    import posix
    _WIN32 = False
os = posix
_MACOS = sys.platform == "darwin"


def test_attributes():
    import time
    assert isinstance(time.altzone, int)
    assert isinstance(time.daylight, int)
    assert isinstance(time.timezone, int)
    assert isinstance(time.tzname, tuple)
    assert isinstance(time.__doc__, str)
    assert isinstance(time._STRUCT_TM_ITEMS, int)

def test_sleep():
    import time
    raises(TypeError, time.sleep, "foo")
    time.sleep(0.12345)
    raises(ValueError, time.sleep, -1.0)
    raises((ValueError, OverflowError), time.sleep, float('nan'))
    raises(OverflowError, time.sleep, float('inf'))

def test_time():
    import time
    t1 = time.time()
    assert isinstance(t1, float)
    assert t1 != 0.0  # 0.0 means failure
    time.sleep(0.02)
    t2 = time.time()
    assert t1 != t2       # the resolution should be at least 0.01 secs

def test_time_ns():
    import time
    t1 = time.time_ns()
    assert isinstance(t1, int)
    assert t1 != 0  # 0 means failure
    time.sleep(0.02)
    t2 = time.time_ns()
    assert t1 != t2       # the resolution should be at least 0.01 secs
    assert abs(time.time() - time.time_ns() * 1e-9) < 0.1

def test_clock_realtime():
    import time
    if not hasattr(time, 'clock_gettime'):
        skip("need time.clock_gettime()")
    t1 = time.clock_gettime(time.CLOCK_REALTIME)
    assert isinstance(t1, float)
    time.sleep(time.clock_getres(time.CLOCK_REALTIME))
    t2 = time.clock_gettime(time.CLOCK_REALTIME)
    assert t1 != t2

def test_clock_realtime_ns():
    import time
    if not hasattr(time, 'clock_gettime_ns'):
        skip("need time.clock_gettime_ns()")
    t1 = time.clock_gettime_ns(time.CLOCK_REALTIME)
    assert isinstance(t1, int)
    time.sleep(time.clock_getres(time.CLOCK_REALTIME))
    t2 = time.clock_gettime_ns(time.CLOCK_REALTIME)
    assert t1 != t2
    assert abs(time.clock_gettime(time.CLOCK_REALTIME) -
               time.clock_gettime_ns(time.CLOCK_REALTIME) * 1e-9) < 0.1

def test_clock_monotonic():
    import time
    if not (hasattr(time, 'clock_gettime') and
            hasattr(time, 'CLOCK_MONOTONIC')):
        skip("need time.clock_gettime()/CLOCK_MONOTONIC")
    t1 = time.clock_gettime(time.CLOCK_MONOTONIC)
    assert isinstance(t1, float)
    time.sleep(time.clock_getres(time.CLOCK_MONOTONIC))
    t2 = time.clock_gettime(time.CLOCK_MONOTONIC)
    assert t1 < t2

def test_clock_monotonic_ns():
    import time
    if not (hasattr(time, 'clock_gettime_ns') and
            hasattr(time, 'CLOCK_MONOTONIC')):
        skip("need time.clock_gettime()/CLOCK_MONOTONIC")
    t1 = time.clock_gettime_ns(time.CLOCK_MONOTONIC)
    assert isinstance(t1, int)
    time.sleep(time.clock_getres(time.CLOCK_MONOTONIC))
    t2 = time.clock_gettime_ns(time.CLOCK_MONOTONIC)
    assert t1 < t2
    assert abs(time.clock_gettime(time.CLOCK_MONOTONIC) -
               time.clock_gettime_ns(time.CLOCK_MONOTONIC) * 1e-9) < 0.1

def test_clock_gettime():
    import time
    clock_ids = ['CLOCK_REALTIME',
                 'CLOCK_REALTIME_COARSE',
                 'CLOCK_MONOTONIC',
                 'CLOCK_MONOTONIC_COARSE',
                 'CLOCK_MONOTONIC_RAW',
                 'CLOCK_BOOTTIME',
                 'CLOCK_PROCESS_CPUTIME_ID',
                 'CLOCK_THREAD_CPUTIME_ID',
                 'CLOCK_HIGHRES',
                 'CLOCK_PROF',
                 'CLOCK_UPTIME',]
    for clock_id in clock_ids:
        clock = getattr(time, clock_id, None)
        if clock is None:
            continue
        t1 = time.clock_gettime(clock)
        assert isinstance(t1, float)
        time.sleep(time.clock_getres(clock))
        t2 = time.clock_gettime(clock)
        assert t1 < t2

def test_clock_gettime():
    import time
    clock_ids = ['CLOCK_REALTIME',
                 'CLOCK_REALTIME_COARSE',
                 'CLOCK_MONOTONIC',
                 'CLOCK_MONOTONIC_COARSE',
                 'CLOCK_MONOTONIC_RAW',
                 'CLOCK_BOOTTIME',
                 'CLOCK_PROCESS_CPUTIME_ID',
                 'CLOCK_THREAD_CPUTIME_ID',
                 'CLOCK_HIGHRES',
                 'CLOCK_PROF',
                 'CLOCK_UPTIME',]
    for clock_id in clock_ids:
        clock = getattr(time, clock_id, None)
        if clock is None:
            continue
        t1 = time.clock_gettime_ns(clock)
        assert isinstance(t1, int)
        time.sleep(time.clock_getres(clock))
        t2 = time.clock_gettime_ns(clock)
        assert t1 < t2
        assert abs(time.clock_gettime(clock) -
                   time.clock_gettime_ns(clock) * 1e-9) < 0.1

def test_ctime():
    import time
    raises(TypeError, time.ctime, "foo")
    time.ctime(None)
    time.ctime()
    res = time.ctime(0)
    assert isinstance(res, str)
    time.ctime(time.time())
    raises(OverflowError, time.ctime, 1E200)
    raises(OverflowError, time.ctime, 10**900)
    for year in [-100, 100, 1000, 2000, 10000]:
        try:
            testval = time.mktime((year, 1, 10) + (0,)*6)
        except (ValueError, OverflowError):
            # If mktime fails, ctime will fail too.  This may happen
            # on some platforms.
            pass
        else:
            assert time.ctime(testval)[20:] == str(year)

def test_gmtime():
    import time, sys
    raises(TypeError, time.gmtime, "foo")
    time.gmtime()
    time.gmtime(None)
    time.gmtime(0)
    res = time.gmtime(time.time())
    assert isinstance(res, time.struct_time)
    assert res[-1] == 0 # DST is always zero in gmtime()
    t0 = time.mktime(time.gmtime())
    t1 = time.mktime(time.gmtime(None))
    assert 0 <= (t1 - t0) < 1.2
    t = time.time()
    assert time.gmtime(t) == time.gmtime(t)
    raises(OverflowError, time.gmtime, 2**64)
    raises(OverflowError, time.gmtime, -2**64)
    if sys.platform == 'win32':
        # This is 
        # datetime.datetime.max.replace(tzinfo=datetime.timezone.utc).timestamp()) - 1
        # and is checked in aiohttp
        # see
        # https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/localtime-localtime32-localtime64
        raises(OSError, time.gmtime, 253402300799)

def test_localtime():
    import time
    raises(TypeError, time.localtime, "foo")
    time.localtime()
    time.localtime(None)
    time.localtime(0)
    res = time.localtime(time.time())
    assert isinstance(res, time.struct_time)
    t0 = time.mktime(time.localtime())
    t1 = time.mktime(time.localtime(None))
    assert 0 <= (t1 - t0) < 1.2
    t = time.time()
    assert time.localtime(t) == time.localtime(t)
    if _WIN32:
        raises(OSError, time.localtime, -1)
    else:
        time.localtime(-1)

def test_localtime_invalid():
    from time import localtime
    exc = raises(ValueError, localtime, float('nan'))
    assert 'Invalid value' in str(exc.value)

def test_mktime():
    import time
    import sys
    raises(TypeError, time.mktime, "foo")
    raises(TypeError, time.mktime, None)
    raises(TypeError, time.mktime, (1, 2))
    raises(TypeError, time.mktime, (1, 2, 3, 4, 5, 6, 'f', 8, 9))
    res = time.mktime(time.localtime())
    assert isinstance(res, float)

    ltime = time.localtime()
    ltime = list(ltime)
    ltime[0] = -1
    if _WIN32 or _MACOS:
        raises(OverflowError, time.mktime, tuple(ltime))
    else:
        time.mktime(tuple(ltime))  # Does not crash anymore
    ltime[0] = 100
    if _WIN32 or _MACOS:
        raises(OverflowError, time.mktime, tuple(ltime))
    else:
        time.mktime(tuple(ltime))  # Does not crash anymore

    t = time.time()
    assert int(time.mktime(time.localtime(t))) == int(t)
    assert int(time.mktime(time.gmtime(t))) - time.timezone == int(t)
    ltime = time.localtime()
    assert time.mktime(tuple(ltime)) == time.mktime(ltime)

    res = time.mktime((2000, 1, 1, 0, 0, 0, -1, -1, -1))
    assert time.ctime(res) == 'Sat Jan  1 00:00:00 2000'

def test_mktime_overflow():
    import time
    import sys
    if _WIN32:
        # on windows, mktime will convert to utc and the upper
        # bound is 23:59:59 Dec 21, 3000. So in order to be sure
        # to exceed the limit everywhere, add 2 years
        MAX_YEAR = 3000
        DELTA = 2
        MIN_YEAR = 1971
    else:
        MAX_YEAR = (1 << 31) - 1
        DELTA = 1
        MIN_YEAR = -(1 << 31) + 1900
    time.mktime((MAX_YEAR,) + (0,) * 8)  # doesn't raise
    with raises(OverflowError):
        time.mktime((MAX_YEAR + DELTA,) + (0,) * 8)
    if _MACOS:
        raises(OverflowError, time.mktime, (MIN_YEAR,) + (0,) * 8)
    else:
        time.mktime((MIN_YEAR,) + (0,) * 8)
    with raises(OverflowError):
        time.mktime((MIN_YEAR - DELTA,) + (0,) * 8)

def test_asctime():
    import time
    time.asctime()
    # raises(TypeError, time.asctime, None)
    raises(TypeError, time.asctime, ())
    raises(TypeError, time.asctime, (1,))
    raises(TypeError, time.asctime, range(8))
    raises(TypeError, time.asctime, (1, 2))
    raises(TypeError, time.asctime, (1, 2, 3, 4, 5, 6, 'f', 8, 9))
    raises(TypeError, time.asctime, "foo")
    raises(ValueError, time.asctime, (1900, -1, 1, 0, 0, 0, 0, 1, -1))
    res = time.asctime()
    assert isinstance(res, str)
    time.asctime(time.localtime())
    t = time.time()
    assert time.ctime(t) == time.asctime(time.localtime(t))
    if time.timezone:
        assert time.ctime(t) != time.asctime(time.gmtime(t))
    ltime = time.localtime()
    assert time.asctime(tuple(ltime)) == time.asctime(ltime)
    try:
        time.asctime((12345,) + (0,) * 8)  # assert this doesn't crash
    except ValueError:
        pass  # some OS (ie POSIXes besides Linux) reject year > 9999

def test_asctime_large_year():
    import time
    assert time.asctime((12345,) +
                          (0,) * 8) == 'Mon Jan  1 00:00:00 12345'
    assert time.asctime((123456789,) +
                          (0,) * 8) == 'Mon Jan  1 00:00:00 123456789'
    sizeof_int = 4
    bigyear = (1 << 8 * sizeof_int - 1) - 1
    asc = time.asctime((bigyear, 6, 1) + (0,)*6)
    assert asc[-len(str(bigyear)):] == str(bigyear)
    raises(OverflowError, time.asctime, (bigyear + 1,) + (0,)*8)
    raises(OverflowError, time.asctime, (-bigyear - 2 + 1900,) + (0,)*8)

def test_struct_time():
    import time
    raises(TypeError, time.struct_time)
    raises(TypeError, time.struct_time, "foo")
    raises(TypeError, time.struct_time, (1, 2, 3))
    tup = (1, 2, 3, 4, 5, 6, 7, 8, 9)
    st_time = time.struct_time(tup)
    assert str(st_time).startswith('time.struct_time(tm_year=1, ')
    assert len(st_time) == len(tup)

def test_tzset():
    import time
    import os

    if _WIN32:
        skip("tzset available only under Unix")

    # epoch time of midnight Dec 25th 2002. Never DST in northern
    # hemisphere.
    xmas2002 = 1040774400.0

    # these formats are correct for 2002, and possibly future years
    # this format is the 'standard' as documented at:
    # http://www.opengroup.org/onlinepubs/007904975/basedefs/xbd_chap08.html
    # They are also documented in the tzset(3) man page on most Unix
    # systems.
    eastern = 'EST+05EDT,M4.1.0,M10.5.0'
    victoria = 'AEST-10AEDT-11,M10.5.0,M3.5.0'
    utc = 'UTC+0'

    org_TZ = os.environ.get('TZ', None)
    try:
        # Make sure we can switch to UTC time and results are correct
        # Note that unknown timezones default to UTC.
        # Note that altzone is undefined in UTC, as there is no DST
        os.environ['TZ'] = eastern
        time.tzset()
        os.environ['TZ'] = utc
        time.tzset()
        assert time.gmtime(xmas2002) == time.localtime(xmas2002)
        assert time.daylight == 0
        assert time.timezone == 0
        assert time.localtime(xmas2002).tm_isdst == 0

        # make sure we can switch to US/Eastern
        os.environ['TZ'] = eastern
        time.tzset()
        assert time.gmtime(xmas2002) != time.localtime(xmas2002)
        assert time.tzname == ('EST', 'EDT')
        assert len(time.tzname) == 2
        assert time.daylight == 1
        assert time.timezone == 18000
        assert time.altzone == 14400
        assert time.localtime(xmas2002).tm_isdst == 0

        # now go to the southern hemisphere.
        os.environ['TZ'] = victoria
        time.tzset()
        assert time.gmtime(xmas2002) != time.localtime(xmas2002)
        assert time.tzname[0] == 'AEST'
        assert time.tzname[1] == 'AEDT'
        assert len(time.tzname) == 2
        assert time.daylight == 1
        assert time.timezone == -36000
        assert time.altzone == -39600
        assert time.localtime(xmas2002).tm_isdst == 1
    finally:
        # repair TZ environment variable in case any other tests
        # rely on it.
        if org_TZ is not None:
            os.environ['TZ'] = org_TZ
        elif 'TZ' in os.environ:
            del os.environ['TZ']
        time.tzset()

def test_localtime_timezone():
    import time
    import os
    if _WIN32:
        skip("tzset available only under Unix")
    if not (os.path.exists('/usr/share/zoneinfo/Europe/Kyiv') or
            os.path.exists('/usr/lib/zoneinfo/Europe/Kyiv')):
        skip("Kyiv timezone unavailable")
    org_TZ = os.environ.get('TZ', None)
    try:
        os.environ['TZ'] = 'Europe/Kyiv'
        time.tzset()
        localtm = time.localtime(0)
        assert localtm.tm_zone == "MSK"
        assert localtm.tm_gmtoff == 10800
    finally:
        if org_TZ is not None:
            os.environ['TZ'] = org_TZ
        elif 'TZ' in os.environ:
            del os.environ['TZ']
        time.tzset()

def test_large_year_does_not_crash():
    # may fail on windows but should not crash
    import time
    try:
        time.strftime('%Y', (10000, 0, 0, 0, 0, 0, 0, 0, 0))
    except ValueError:
        pass

def test_strftime():
    import time
    import os, sys

    t = time.time()
    tt = time.gmtime(t)
    for directive in ('a', 'A', 'b', 'B', 'c', 'd', 'H', 'I',
                      'j', 'm', 'M', 'p', 'S',
                      'U', 'w', 'W', 'x', 'X', 'y', 'Y', 'Z', '%'):
        format = ' %' + directive
        time.strftime(format, tt)

    raises(TypeError, time.strftime, ())
    raises(TypeError, time.strftime, (1,))
    raises(TypeError, time.strftime, range(8))

    if _WIN32:
        raises(ValueError, time.strftime, '%f')
        # windows must have year stricly > 0
        return
    elif sys.platform == 'darwin' or 'bsd' in sys.platform:
        # darwin strips % of unknown format codes
        # http://bugs.python.org/issue9811
        assert time.strftime('%f') == 'f'

        # Darwin always use four digits for %Y, Linux uses as many as needed.
        expected_year = '0000'
    else:
        assert time.strftime('%f') == '%f'
        expected_year = '0'
    with raises(ValueError):
        time.strftime("%Y\0", tt)

    expected_formatted_date = expected_year + ' 01 01 00 00 00 1 001'
    assert time.strftime("%Y %m %d %H %M %S %w %j", (0,) * 9) == expected_formatted_date

def test_strftime_ext():
    import time

    tt = time.gmtime()
    try:
        result = time.strftime('%D', tt)
    except ValueError:
        pass
    else:
        assert result == time.strftime('%m/%d/%y', tt)

def test_strftime_bounds_checking():
    import time
    import os

    # make sure that strftime() checks the bounds of the various parts
    # of the time tuple.

    # check year
    time.strftime('', (1899, 1, 1, 0, 0, 0, 0, 1, -1))
    if _WIN32:
        with raises(ValueError):
            time.strftime('', (0, 1, 1, 0, 0, 0, 0, 1, -1))
    else:
        time.strftime('', (0, 1, 1, 0, 0, 0, 0, 1, -1))

    # check month
    raises(ValueError, time.strftime, '', (1900, 13, 1, 0, 0, 0, 0, 1, -1))
    # check day of month
    raises(ValueError, time.strftime, '', (1900, 1, 32, 0, 0, 0, 0, 1, -1))
    # check hour
    raises(ValueError, time.strftime, '', (1900, 1, 1, -1, 0, 0, 0, 1, -1))
    raises(ValueError, time.strftime, '', (1900, 1, 1, 24, 0, 0, 0, 1, -1))
    # check minute
    raises(ValueError, time.strftime, '', (1900, 1, 1, 0, -1, 0, 0, 1, -1))
    raises(ValueError, time.strftime, '', (1900, 1, 1, 0, 60, 0, 0, 1, -1))
    # check second
    raises(ValueError, time.strftime, '', (1900, 1, 1, 0, 0, -1, 0, 1, -1))
    # C99 only requires allowing for one leap second, but Python's docs say
    # allow two leap seconds (0..61)
    raises(ValueError, time.strftime, '', (1900, 1, 1, 0, 0, 62, 0, 1, -1))
    # no check for upper-bound day of week;
    #  value forced into range by a "% 7" calculation.
    # start check at -2 since gettmarg() increments value before taking
    #  modulo.
    raises(ValueError, time.strftime, '', (1900, 1, 1, 0, 0, 0, -2, 1, -1))
    # check day of the year
    raises(ValueError, time.strftime, '', (1900, 1, 1, 0, 0, 0, 0, 367, -1))
    # check daylight savings flag
    time.strftime('', (1900, 1, 1, 0, 0, 0, 0, 1, -2))
    time.strftime('', (1900, 1, 1, 0, 0, 0, 0, 1, 2))

@pytest.mark.skipif(sys.platform=="win32", reason='fails on win32')
def test_strftime_nonascii():
    import time
    import _locale
    prev_loc = _locale.setlocale(_locale.LC_TIME)
    try:
        _locale.setlocale(_locale.LC_TIME, "fr_CH")
    except _locale.Error:
        skip("unsupported locale LC_TIME=fr_CH")
    try:
        s = time.strftime('%B.', time.localtime(192039127))
        # I am unsure, but I think that this fails because decoding of
        # the result isn't done in the fr_CH locale.  There is no code
        # to grab the LC_TIME locale specifically, which is the one
        # used by strftime().
        assert s == "f\xe9vrier."
    finally:
        _locale.setlocale(_locale.LC_TIME, prev_loc)

def test_strftime_surrogate():
    import time
    # maybe raises, maybe doesn't, but should not crash
    try:
        res = time.strftime(u'%y\ud800%m', time.localtime(192039127))
    except UnicodeEncodeError:
        pass
    else:
        expected = u'76\ud80002'
        print(len(res), len(expected))
        assert res == u'76\ud80002' 

@pytest.mark.skipif(_WIN32, reason="fails to encode s")
def test_strftime_unicode():
    import time
    s = u"ððððððððððððððððððððððð꿀"
    res = time.strftime(u"%D" + s, time.localtime(192039127))
    assert res.endswith(s)

def test_strptime():
    import time

    t = time.time()
    tt = time.gmtime(t)
    assert isinstance(time.strptime("", ""), type(tt))

    for directive in ('a', 'A', 'b', 'B', 'c', 'd', 'H', 'I',
                      'j', 'm', 'M', 'p', 'S',
                      'U', 'w', 'W', 'x', 'X', 'y', 'Y', 'Z', '%'):
        format = ' %' + directive
        # print(format)
        time.strptime(time.strftime(format, tt), format)

def test_pickle():
    import pickle
    import time
    now = time.localtime()
    new = pickle.loads(pickle.dumps(now))
    assert new == now
    assert type(new) is type(now)

def test_monotonic():
    import time
    t1 = time.monotonic()
    assert isinstance(t1, float)
    time.sleep(0.02)
    t2 = time.monotonic()
    assert t1 < t2

def test_monotonic_ns():
    import time
    t1 = time.monotonic_ns()
    assert isinstance(t1, int)
    time.sleep(0.02)
    t2 = time.monotonic_ns()
    assert t1 < t2
    assert abs(time.monotonic() - time.monotonic_ns() * 1e-9) < 0.1

def test_perf_counter():
    import time
    assert isinstance(time.perf_counter(), float)

def test_perf_counter_ns():
    import time
    assert isinstance(time.perf_counter_ns(), int)
    assert abs(time.perf_counter() - time.perf_counter_ns() * 1e-9) < 0.1

def test_process_time():
    import time
    t1 = time.process_time()
    assert isinstance(t1, float)
    time.sleep(0.1)
    t2 = time.process_time()
    # process_time() should not include time spent during sleep
    assert (t2 - t1) < 0.05

def test_process_time_ns():
    import time
    t1 = time.process_time_ns()
    assert isinstance(t1, int)
    time.sleep(0.1)
    t2 = time.process_time_ns()
    # process_time_ns() should not include time spent during sleep
    assert (t2 - t1) < 5 * 10**7
    assert abs(time.process_time() - time.process_time_ns() * 1e-9) < 0.1

def test_thread_time():
    import time
    if not hasattr(time, 'thread_time'):
        skip("need time.thread_time")
    t1 = time.thread_time()
    assert isinstance(t1, float)
    time.sleep(0.1)
    t2 = time.thread_time()
    # thread_time_time() should not include time spent during sleep
    assert (t2 - t1) < 0.05

def test_thread_time_ns():
    import time
    if not hasattr(time, 'thread_time_ns'):
        skip("need time.thread_time_ns")
    t1 = time.thread_time_ns()
    assert isinstance(t1, int)
    time.sleep(0.1)
    t2 = time.thread_time_ns()
    # process_thread_ns() should not include time spent during sleep
    assert (t2 - t1) < 5 * 10**7
    assert abs(time.thread_time() - time.thread_time_ns() * 1e-9) < 0.1

def test_get_clock_info():
    import time
    clocks = ['perf_counter', 'process_time', 'time']
    if hasattr(time, 'monotonic'):
        clocks.append('monotonic')
    if hasattr(time, 'thread_time'):
        clocks.append('thread_time')
    for name in clocks:
        info = time.get_clock_info(name)
        assert isinstance(info.implementation, str)
        assert info.implementation != ''
        assert isinstance(info.monotonic, bool)
        assert isinstance(info.resolution, float)
        assert info.resolution > 0.0
        assert info.resolution <= 1.0
        assert isinstance(info.adjustable, bool)

def test_pep475_retry_sleep():
    import time
    import _signal as signal
    if not hasattr(signal, 'SIGALRM'):
        skip("SIGALRM available only under Unix")
    signalled = []

    def foo(*args):
        signalled.append("ALARM")

    signal.signal(signal.SIGALRM, foo)
    try:
        t1 = time.time()
        signal.alarm(1)
        time.sleep(3.0)
        t2 = time.time()
    finally:
        signal.signal(signal.SIGALRM, signal.SIG_DFL)

    assert signalled != []
    assert t2 - t1 > 2.99

def test_tm_gmtoff_valid():
    import time
    local = time.localtime()
    assert local.tm_gmtoff is not None
    assert local.tm_zone is not None
    local = time.gmtime()
    assert local.tm_gmtoff is not None
    assert local.tm_zone is not None

def test_match_args():
    import time
    assert time.struct_time.__match_args__ == ('tm_year', 'tm_mon', 'tm_mday', 'tm_hour', 'tm_min', 'tm_sec', 'tm_wday', 'tm_yday', 'tm_isdst')