Repository navigation
Expand file tree
/
Copy pathtest_builtin.py
More file actions
2526 lines (2210 loc) · 91.6 KB
/
Copy pathtest_builtin.py
File metadata and controls
2526 lines (2210 loc) · 91.6 KB
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
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
# Python test set -- built-in functions
import ast
import asyncio
import builtins
import collections
import decimal
import fractions
import gc
import io
import locale
import os
import pickle
import platform
import random
import re
import sys
import traceback
import types
import unittest
import warnings
from contextlib import ExitStack
from functools import partial
from inspect import CO_COROUTINE
from itertools import product
from textwrap import dedent
from types import AsyncGeneratorType, FunctionType, CellType
from operator import neg
from test import support
from test.support import (swap_attr, maybe_get_event_loop_policy)
from test.support.os_helper import (EnvironmentVarGuard, TESTFN, unlink)
from test.support.script_helper import assert_python_ok
from test.support.warnings_helper import check_warnings
from unittest.mock import MagicMock, patch
try:
import pty, signal
except ImportError:
pty = signal = None
class Squares:
def __init__(self, max):
self.max = max
self.sofar = []
def __len__(self): return len(self.sofar)
def __getitem__(self, i):
if not 0 <= i < self.max: raise IndexError
n = len(self.sofar)
while n <= i:
self.sofar.append(n*n)
n += 1
return self.sofar[i]
class StrSquares:
def __init__(self, max):
self.max = max
self.sofar = []
def __len__(self):
return len(self.sofar)
def __getitem__(self, i):
if not 0 <= i < self.max:
raise IndexError
n = len(self.sofar)
while n <= i:
self.sofar.append(str(n*n))
n += 1
return self.sofar[i]
class BitBucket:
def write(self, line):
pass
test_conv_no_sign = [
('0', 0),
('1', 1),
('9', 9),
('10', 10),
('99', 99),
('100', 100),
('314', 314),
(' 314', 314),
('314 ', 314),
(' \t\t 314 \t\t ', 314),
(repr(sys.maxsize), sys.maxsize),
(' 1x', ValueError),
(' 1 ', 1),
(' 1\02 ', ValueError),
('', ValueError),
(' ', ValueError),
(' \t\t ', ValueError),
(str(br'\u0663\u0661\u0664 ','raw-unicode-escape'), 314),
(chr(0x200), ValueError),
]
test_conv_sign = [
('0', 0),
('1', 1),
('9', 9),
('10', 10),
('99', 99),
('100', 100),
('314', 314),
(' 314', ValueError),
('314 ', 314),
(' \t\t 314 \t\t ', ValueError),
(repr(sys.maxsize), sys.maxsize),
(' 1x', ValueError),
(' 1 ', ValueError),
(' 1\02 ', ValueError),
('', ValueError),
(' ', ValueError),
(' \t\t ', ValueError),
(str(br'\u0663\u0661\u0664 ','raw-unicode-escape'), 314),
(chr(0x200), ValueError),
]
class TestFailingBool:
def __bool__(self):
raise RuntimeError
class TestFailingIter:
def __iter__(self):
raise RuntimeError
def filter_char(arg):
return ord(arg) > ord("d")
def map_char(arg):
return chr(ord(arg)+1)
class BuiltinTest(unittest.TestCase):
# Helper to check picklability
def check_iter_pickle(self, it, seq, proto):
itorg = it
d = pickle.dumps(it, proto)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(list(it), seq)
#test the iterator after dropping one from it
it = pickle.loads(d)
try:
next(it)
except StopIteration:
return
d = pickle.dumps(it, proto)
it = pickle.loads(d)
self.assertEqual(list(it), seq[1:])
def test_import(self):
__import__('sys')
__import__('time')
__import__('string')
__import__(name='sys')
__import__(name='time', level=0)
self.assertRaises(ModuleNotFoundError, __import__, 'spamspam')
self.assertRaises(TypeError, __import__, 1, 2, 3, 4)
self.assertRaises(ValueError, __import__, '')
self.assertRaises(TypeError, __import__, 'sys', name='sys')
# Relative import outside of a package with no __package__ or __spec__ (bpo-37409).
with self.assertWarns(ImportWarning):
self.assertRaises(ImportError, __import__, '',
{'__package__': None, '__spec__': None, '__name__': '__main__'},
locals={}, fromlist=('foo',), level=1)
# embedded null character
self.assertRaises(ModuleNotFoundError, __import__, 'string\x00')
def test_abs(self):
# int
self.assertEqual(abs(0), 0)
self.assertEqual(abs(1234), 1234)
self.assertEqual(abs(-1234), 1234)
self.assertTrue(abs(-sys.maxsize-1) > 0)
# float
self.assertEqual(abs(0.0), 0.0)
self.assertEqual(abs(3.14), 3.14)
self.assertEqual(abs(-3.14), 3.14)
# str
self.assertRaises(TypeError, abs, 'a')
# bool
self.assertEqual(abs(True), 1)
self.assertEqual(abs(False), 0)
# other
self.assertRaises(TypeError, abs)
self.assertRaises(TypeError, abs, None)
class AbsClass(object):
def __abs__(self):
return -5
self.assertEqual(abs(AbsClass()), -5)
def test_all(self):
self.assertEqual(all([2, 4, 6]), True)
self.assertEqual(all([2, None, 6]), False)
self.assertRaises(RuntimeError, all, [2, TestFailingBool(), 6])
self.assertRaises(RuntimeError, all, TestFailingIter())
self.assertRaises(TypeError, all, 10) # Non-iterable
self.assertRaises(TypeError, all) # No args
self.assertRaises(TypeError, all, [2, 4, 6], []) # Too many args
self.assertEqual(all([]), True) # Empty iterator
self.assertEqual(all([0, TestFailingBool()]), False)# Short-circuit
S = [50, 60]
self.assertEqual(all(x > 42 for x in S), True)
S = [50, 40, 60]
self.assertEqual(all(x > 42 for x in S), False)
def test_any(self):
self.assertEqual(any([None, None, None]), False)
self.assertEqual(any([None, 4, None]), True)
self.assertRaises(RuntimeError, any, [None, TestFailingBool(), 6])
self.assertRaises(RuntimeError, any, TestFailingIter())
self.assertRaises(TypeError, any, 10) # Non-iterable
self.assertRaises(TypeError, any) # No args
self.assertRaises(TypeError, any, [2, 4, 6], []) # Too many args
self.assertEqual(any([]), False) # Empty iterator
self.assertEqual(any([1, TestFailingBool()]), True) # Short-circuit
S = [40, 60, 30]
self.assertEqual(any(x > 42 for x in S), True)
S = [10, 20, 30]
self.assertEqual(any(x > 42 for x in S), False)
def test_ascii(self):
self.assertEqual(ascii(''), '\'\'')
self.assertEqual(ascii(0), '0')
self.assertEqual(ascii(()), '()')
self.assertEqual(ascii([]), '[]')
self.assertEqual(ascii({}), '{}')
a = []
a.append(a)
self.assertEqual(ascii(a), '[[...]]')
a = {}
a[0] = a
self.assertEqual(ascii(a), '{0: {...}}')
# Advanced checks for unicode strings
def _check_uni(s):
self.assertEqual(ascii(s), repr(s))
_check_uni("'")
_check_uni('"')
_check_uni('"\'')
_check_uni('\0')
_check_uni('\r\n\t .')
# Unprintable non-ASCII characters
_check_uni('\x85')
_check_uni('\u1fff')
_check_uni('\U00012fff')
# Lone surrogates
_check_uni('\ud800')
_check_uni('\udfff')
# Issue #9804: surrogates should be joined even for printable
# wide characters (UCS-2 builds).
self.assertEqual(ascii('\U0001d121'), "'\\U0001d121'")
# All together
s = "'\0\"\n\r\t abcd\x85é\U00012fff\uD800\U0001D121xxx."
self.assertEqual(ascii(s),
r"""'\'\x00"\n\r\t abcd\x85\xe9\U00012fff\ud800\U0001d121xxx.'""")
def test_neg(self):
x = -sys.maxsize-1
self.assertTrue(isinstance(x, int))
self.assertEqual(-x, sys.maxsize+1)
def test_callable(self):
self.assertTrue(callable(len))
self.assertFalse(callable("a"))
self.assertTrue(callable(callable))
self.assertTrue(callable(lambda x, y: x + y))
self.assertFalse(callable(__builtins__))
def f(): pass
self.assertTrue(callable(f))
class C1:
def meth(self): pass
self.assertTrue(callable(C1))
c = C1()
self.assertTrue(callable(c.meth))
self.assertFalse(callable(c))
# __call__ is looked up on the class, not the instance
c.__call__ = None
self.assertFalse(callable(c))
c.__call__ = lambda self: 0
self.assertFalse(callable(c))
del c.__call__
self.assertFalse(callable(c))
class C2(object):
def __call__(self): pass
c2 = C2()
self.assertTrue(callable(c2))
c2.__call__ = None
self.assertTrue(callable(c2))
class C3(C2): pass
c3 = C3()
self.assertTrue(callable(c3))
def test_chr(self):
self.assertEqual(chr(32), ' ')
self.assertEqual(chr(65), 'A')
self.assertEqual(chr(97), 'a')
self.assertEqual(chr(0xff), '\xff')
self.assertRaises(ValueError, chr, 1<<24)
self.assertEqual(chr(sys.maxunicode),
str('\\U0010ffff'.encode("ascii"), 'unicode-escape'))
self.assertRaises(TypeError, chr)
self.assertEqual(chr(0x0000FFFF), "\U0000FFFF")
self.assertEqual(chr(0x00010000), "\U00010000")
self.assertEqual(chr(0x00010001), "\U00010001")
self.assertEqual(chr(0x000FFFFE), "\U000FFFFE")
self.assertEqual(chr(0x000FFFFF), "\U000FFFFF")
self.assertEqual(chr(0x00100000), "\U00100000")
self.assertEqual(chr(0x00100001), "\U00100001")
self.assertEqual(chr(0x0010FFFE), "\U0010FFFE")
self.assertEqual(chr(0x0010FFFF), "\U0010FFFF")
self.assertRaises(ValueError, chr, -1)
self.assertRaises(ValueError, chr, 0x00110000)
self.assertRaises((OverflowError, ValueError), chr, 2**32)
def test_cmp(self):
self.assertTrue(not hasattr(builtins, "cmp"))
def test_compile(self):
compile('print(1)\n', '', 'exec')
bom = b'\xef\xbb\xbf'
compile(bom + b'print(1)\n', '', 'exec')
compile(source='pass', filename='?', mode='exec')
compile(dont_inherit=False, filename='tmp', source='0', mode='eval')
compile('pass', '?', dont_inherit=True, mode='exec')
compile(memoryview(b"text"), "name", "exec")
self.assertRaises(TypeError, compile)
self.assertRaises(ValueError, compile, 'print(42)\n', '<string>', 'badmode')
self.assertRaises(ValueError, compile, 'print(42)\n', '<string>', 'single', 0xff)
self.assertRaises(TypeError, compile, 'pass', '?', 'exec',
mode='eval', source='0', filename='tmp')
compile('print("\xe5")\n', '', 'exec')
self.assertRaises(SyntaxError, compile, chr(0), 'f', 'exec')
self.assertRaises(ValueError, compile, str('a = 1'), 'f', 'bad')
# test the optimize argument
codestr = '''def f():
"""doc"""
debug_enabled = False
if __debug__:
debug_enabled = True
try:
assert False
except AssertionError:
return (True, f.__doc__, debug_enabled, __debug__)
else:
return (False, f.__doc__, debug_enabled, __debug__)
'''
def f(): """doc"""
values = [(-1, __debug__, f.__doc__, __debug__, __debug__),
(0, True, 'doc', True, True),
(1, False, 'doc', False, False),
(2, False, None, False, False)]
for optval, *expected in values:
# test both direct compilation and compilation via AST
codeobjs = []
codeobjs.append(compile(codestr, "<test>", "exec", optimize=optval))
tree = ast.parse(codestr)
codeobjs.append(compile(tree, "<test>", "exec", optimize=optval))
for code in codeobjs:
ns = {}
exec(code, ns)
rv = ns['f']()
self.assertEqual(rv, tuple(expected))
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_compile_top_level_await_no_coro(self):
"""Make sure top level non-await codes get the correct coroutine flags"""
modes = ('single', 'exec')
code_samples = [
'''def f():pass\n''',
'''[x for x in l]''',
'''{x for x in l}''',
'''(x for x in l)''',
'''{x:x for x in l}''',
]
for mode, code_sample in product(modes, code_samples):
source = dedent(code_sample)
co = compile(source,
'?',
mode,
flags=ast.PyCF_ALLOW_TOP_LEVEL_AWAIT)
self.assertNotEqual(co.co_flags & CO_COROUTINE, CO_COROUTINE,
msg=f"source={source} mode={mode}")
# TODO: RUSTPYTHON
@unittest.expectedFailure
@unittest.skipIf(
support.is_emscripten or support.is_wasi,
"socket.accept is broken"
)
def test_compile_top_level_await(self):
"""Test whether code some top level await can be compiled.
Make sure it compiles only with the PyCF_ALLOW_TOP_LEVEL_AWAIT flag
set, and make sure the generated code object has the CO_COROUTINE flag
set in order to execute it with `await eval(.....)` instead of exec,
or via a FunctionType.
"""
# helper function just to check we can run top=level async-for
async def arange(n):
for i in range(n):
yield i
modes = ('single', 'exec')
code_samples = [
'''a = await asyncio.sleep(0, result=1)''',
'''async for i in arange(1):
a = 1''',
'''async with asyncio.Lock() as l:
a = 1''',
'''a = [x async for x in arange(2)][1]''',
'''a = 1 in {x async for x in arange(2)}''',
'''a = {x:1 async for x in arange(1)}[0]''',
'''a = [x async for x in arange(2) async for x in arange(2)][1]''',
'''a = [x async for x in (x async for x in arange(5))][1]''',
'''a, = [1 for x in {x async for x in arange(1)}]''',
'''a = [await asyncio.sleep(0, x) async for x in arange(2)][1]'''
]
policy = maybe_get_event_loop_policy()
try:
for mode, code_sample in product(modes, code_samples):
source = dedent(code_sample)
with self.assertRaises(
SyntaxError, msg=f"source={source} mode={mode}"):
compile(source, '?', mode)
co = compile(source,
'?',
mode,
flags=ast.PyCF_ALLOW_TOP_LEVEL_AWAIT)
self.assertEqual(co.co_flags & CO_COROUTINE, CO_COROUTINE,
msg=f"source={source} mode={mode}")
# test we can create and advance a function type
globals_ = {'asyncio': asyncio, 'a': 0, 'arange': arange}
async_f = FunctionType(co, globals_)
asyncio.run(async_f())
self.assertEqual(globals_['a'], 1)
# test we can await-eval,
globals_ = {'asyncio': asyncio, 'a': 0, 'arange': arange}
asyncio.run(eval(co, globals_))
self.assertEqual(globals_['a'], 1)
finally:
asyncio.set_event_loop_policy(policy)
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_compile_top_level_await_invalid_cases(self):
# helper function just to check we can run top=level async-for
async def arange(n):
for i in range(n):
yield i
modes = ('single', 'exec')
code_samples = [
'''def f(): await arange(10)\n''',
'''def f(): [x async for x in arange(10)]\n''',
'''def f(): [await x async for x in arange(10)]\n''',
'''def f():
async for i in arange(1):
a = 1
''',
'''def f():
async with asyncio.Lock() as l:
a = 1
'''
]
policy = maybe_get_event_loop_policy()
try:
for mode, code_sample in product(modes, code_samples):
source = dedent(code_sample)
with self.assertRaises(
SyntaxError, msg=f"source={source} mode={mode}"):
compile(source, '?', mode)
with self.assertRaises(
SyntaxError, msg=f"source={source} mode={mode}"):
co = compile(source,
'?',
mode,
flags=ast.PyCF_ALLOW_TOP_LEVEL_AWAIT)
finally:
asyncio.set_event_loop_policy(policy)
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_compile_async_generator(self):
"""
With the PyCF_ALLOW_TOP_LEVEL_AWAIT flag added in 3.8, we want to
make sure AsyncGenerators are still properly not marked with the
CO_COROUTINE flag.
"""
code = dedent("""async def ticker():
for i in range(10):
yield i
await asyncio.sleep(0)""")
co = compile(code, '?', 'exec', flags=ast.PyCF_ALLOW_TOP_LEVEL_AWAIT)
glob = {}
exec(co, glob)
self.assertEqual(type(glob['ticker']()), AsyncGeneratorType)
def test_delattr(self):
sys.spam = 1
delattr(sys, 'spam')
self.assertRaises(TypeError, delattr)
self.assertRaises(TypeError, delattr, sys)
msg = r"^attribute name must be string, not 'int'$"
self.assertRaisesRegex(TypeError, msg, delattr, sys, 1)
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_dir(self):
# dir(wrong number of arguments)
self.assertRaises(TypeError, dir, 42, 42)
# dir() - local scope
local_var = 1
self.assertIn('local_var', dir())
# dir(module)
self.assertIn('exit', dir(sys))
# dir(module_with_invalid__dict__)
class Foo(types.ModuleType):
__dict__ = 8
f = Foo("foo")
self.assertRaises(TypeError, dir, f)
# dir(type)
self.assertIn("strip", dir(str))
self.assertNotIn("__mro__", dir(str))
# dir(obj)
class Foo(object):
def __init__(self):
self.x = 7
self.y = 8
self.z = 9
f = Foo()
self.assertIn("y", dir(f))
# dir(obj_no__dict__)
class Foo(object):
__slots__ = []
f = Foo()
self.assertIn("__repr__", dir(f))
# dir(obj_no__class__with__dict__)
# (an ugly trick to cause getattr(f, "__class__") to fail)
class Foo(object):
__slots__ = ["__class__", "__dict__"]
def __init__(self):
self.bar = "wow"
f = Foo()
self.assertNotIn("__repr__", dir(f))
self.assertIn("bar", dir(f))
# dir(obj_using __dir__)
class Foo(object):
def __dir__(self):
return ["kan", "ga", "roo"]
f = Foo()
self.assertTrue(dir(f) == ["ga", "kan", "roo"])
# dir(obj__dir__tuple)
class Foo(object):
def __dir__(self):
return ("b", "c", "a")
res = dir(Foo())
self.assertIsInstance(res, list)
self.assertTrue(res == ["a", "b", "c"])
# dir(obj__dir__not_sequence)
class Foo(object):
def __dir__(self):
return 7
f = Foo()
self.assertRaises(TypeError, dir, f)
# dir(traceback)
try:
raise IndexError
except IndexError as e:
self.assertEqual(len(dir(e.__traceback__)), 4)
# test that object has a __dir__()
self.assertEqual(sorted([].__dir__()), dir([]))
def test___ne__(self):
self.assertFalse(None.__ne__(None))
self.assertIs(None.__ne__(0), NotImplemented)
self.assertIs(None.__ne__("abc"), NotImplemented)
def test_divmod(self):
self.assertEqual(divmod(12, 7), (1, 5))
self.assertEqual(divmod(-12, 7), (-2, 2))
self.assertEqual(divmod(12, -7), (-2, -2))
self.assertEqual(divmod(-12, -7), (1, -5))
self.assertEqual(divmod(-sys.maxsize-1, -1), (sys.maxsize+1, 0))
for num, denom, exp_result in [ (3.25, 1.0, (3.0, 0.25)),
(-3.25, 1.0, (-4.0, 0.75)),
(3.25, -1.0, (-4.0, -0.75)),
(-3.25, -1.0, (3.0, -0.25))]:
result = divmod(num, denom)
self.assertAlmostEqual(result[0], exp_result[0])
self.assertAlmostEqual(result[1], exp_result[1])
self.assertRaises(TypeError, divmod)
def test_eval(self):
self.assertEqual(eval('1+1'), 2)
self.assertEqual(eval(' 1+1\n'), 2)
globals = {'a': 1, 'b': 2}
locals = {'b': 200, 'c': 300}
self.assertEqual(eval('a', globals) , 1)
self.assertEqual(eval('a', globals, locals), 1)
self.assertEqual(eval('b', globals, locals), 200)
self.assertEqual(eval('c', globals, locals), 300)
globals = {'a': 1, 'b': 2}
locals = {'b': 200, 'c': 300}
bom = b'\xef\xbb\xbf'
self.assertEqual(eval(bom + b'a', globals, locals), 1)
self.assertEqual(eval('"\xe5"', globals), "\xe5")
self.assertRaises(TypeError, eval)
self.assertRaises(TypeError, eval, ())
self.assertRaises(SyntaxError, eval, bom[:2] + b'a')
class X:
def __getitem__(self, key):
raise ValueError
self.assertRaises(ValueError, eval, "foo", {}, X())
def test_general_eval(self):
# Tests that general mappings can be used for the locals argument
class M:
"Test mapping interface versus possible calls from eval()."
def __getitem__(self, key):
if key == 'a':
return 12
raise KeyError
def keys(self):
return list('xyz')
m = M()
g = globals()
self.assertEqual(eval('a', g, m), 12)
self.assertRaises(NameError, eval, 'b', g, m)
self.assertEqual(eval('dir()', g, m), list('xyz'))
self.assertEqual(eval('globals()', g, m), g)
self.assertEqual(eval('locals()', g, m), m)
self.assertRaises(TypeError, eval, 'a', m)
class A:
"Non-mapping"
pass
m = A()
self.assertRaises(TypeError, eval, 'a', g, m)
# Verify that dict subclasses work as well
class D(dict):
def __getitem__(self, key):
if key == 'a':
return 12
return dict.__getitem__(self, key)
def keys(self):
return list('xyz')
d = D()
self.assertEqual(eval('a', g, d), 12)
self.assertRaises(NameError, eval, 'b', g, d)
self.assertEqual(eval('dir()', g, d), list('xyz'))
self.assertEqual(eval('globals()', g, d), g)
self.assertEqual(eval('locals()', g, d), d)
# Verify locals stores (used by list comps)
eval('[locals() for i in (2,3)]', g, d)
eval('[locals() for i in (2,3)]', g, collections.UserDict())
class SpreadSheet:
"Sample application showing nested, calculated lookups."
_cells = {}
def __setitem__(self, key, formula):
self._cells[key] = formula
def __getitem__(self, key):
return eval(self._cells[key], globals(), self)
ss = SpreadSheet()
ss['a1'] = '5'
ss['a2'] = 'a1*6'
ss['a3'] = 'a2*7'
self.assertEqual(ss['a3'], 210)
# Verify that dir() catches a non-list returned by eval
# SF bug #1004669
class C:
def __getitem__(self, item):
raise KeyError(item)
def keys(self):
return 1 # used to be 'a' but that's no longer an error
self.assertRaises(TypeError, eval, 'dir()', globals(), C())
def test_exec(self):
g = {}
exec('z = 1', g)
if '__builtins__' in g:
del g['__builtins__']
self.assertEqual(g, {'z': 1})
exec('z = 1+1', g)
if '__builtins__' in g:
del g['__builtins__']
self.assertEqual(g, {'z': 2})
g = {}
l = {}
with check_warnings():
warnings.filterwarnings("ignore", "global statement",
module="<string>")
exec('global a; a = 1; b = 2', g, l)
if '__builtins__' in g:
del g['__builtins__']
if '__builtins__' in l:
del l['__builtins__']
self.assertEqual((g, l), ({'a': 1}, {'b': 2}))
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_exec_globals(self):
code = compile("print('Hello World!')", "", "exec")
# no builtin function
self.assertRaisesRegex(NameError, "name 'print' is not defined",
exec, code, {'__builtins__': {}})
# __builtins__ must be a mapping type
self.assertRaises(TypeError,
exec, code, {'__builtins__': 123})
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_exec_globals_frozen(self):
class frozendict_error(Exception):
pass
class frozendict(dict):
def __setitem__(self, key, value):
raise frozendict_error("frozendict is readonly")
# read-only builtins
if isinstance(__builtins__, types.ModuleType):
frozen_builtins = frozendict(__builtins__.__dict__)
else:
frozen_builtins = frozendict(__builtins__)
code = compile("__builtins__['superglobal']=2; print(superglobal)", "test", "exec")
self.assertRaises(frozendict_error,
exec, code, {'__builtins__': frozen_builtins})
# no __build_class__ function
code = compile("class A: pass", "", "exec")
self.assertRaisesRegex(NameError, "__build_class__ not found",
exec, code, {'__builtins__': {}})
# __build_class__ in a custom __builtins__
exec(code, {'__builtins__': frozen_builtins})
self.assertRaisesRegex(NameError, "__build_class__ not found",
exec, code, {'__builtins__': frozendict()})
# read-only globals
namespace = frozendict({})
code = compile("x=1", "test", "exec")
self.assertRaises(frozendict_error,
exec, code, namespace)
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_exec_globals_error_on_get(self):
# custom `globals` or `builtins` can raise errors on item access
class setonlyerror(Exception):
pass
class setonlydict(dict):
def __getitem__(self, key):
raise setonlyerror
# globals' `__getitem__` raises
code = compile("globalname", "test", "exec")
self.assertRaises(setonlyerror,
exec, code, setonlydict({'globalname': 1}))
# builtins' `__getitem__` raises
code = compile("superglobal", "test", "exec")
self.assertRaises(setonlyerror, exec, code,
{'__builtins__': setonlydict({'superglobal': 1})})
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_exec_globals_dict_subclass(self):
class customdict(dict): # this one should not do anything fancy
pass
code = compile("superglobal", "test", "exec")
# works correctly
exec(code, {'__builtins__': customdict({'superglobal': 1})})
# custom builtins dict subclass is missing key
self.assertRaisesRegex(NameError, "name 'superglobal' is not defined",
exec, code, {'__builtins__': customdict()})
def test_exec_redirected(self):
savestdout = sys.stdout
sys.stdout = None # Whatever that cannot flush()
try:
# Used to raise SystemError('error return without exception set')
exec('a')
except NameError:
pass
finally:
sys.stdout = savestdout
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_exec_closure(self):
def function_without_closures():
return 3 * 5
result = 0
def make_closure_functions():
a = 2
b = 3
c = 5
def three_freevars():
nonlocal result
nonlocal a
nonlocal b
result = a*b
def four_freevars():
nonlocal result
nonlocal a
nonlocal b
nonlocal c
result = a*b*c
return three_freevars, four_freevars
three_freevars, four_freevars = make_closure_functions()
# "smoke" test
result = 0
exec(three_freevars.__code__,
three_freevars.__globals__,
closure=three_freevars.__closure__)
self.assertEqual(result, 6)
# should also work with a manually created closure
result = 0
my_closure = (CellType(35), CellType(72), three_freevars.__closure__[2])
exec(three_freevars.__code__,
three_freevars.__globals__,
closure=my_closure)
self.assertEqual(result, 2520)
# should fail: closure isn't allowed
# for functions without free vars
self.assertRaises(TypeError,
exec,
function_without_closures.__code__,
function_without_closures.__globals__,
closure=my_closure)
# should fail: closure required but wasn't specified
self.assertRaises(TypeError,
exec,
three_freevars.__code__,
three_freevars.__globals__,
closure=None)
# should fail: closure of wrong length
self.assertRaises(TypeError,
exec,
three_freevars.__code__,
three_freevars.__globals__,
closure=four_freevars.__closure__)
# should fail: closure using a list instead of a tuple
my_closure = list(my_closure)
self.assertRaises(TypeError,
exec,
three_freevars.__code__,
three_freevars.__globals__,
closure=my_closure)
# should fail: closure tuple with one non-cell-var
my_closure[0] = int
my_closure = tuple(my_closure)
self.assertRaises(TypeError,
exec,
three_freevars.__code__,
three_freevars.__globals__,
closure=my_closure)
def test_filter(self):
self.assertEqual(list(filter(lambda c: 'a' <= c <= 'z', 'Hello World')), list('elloorld'))
self.assertEqual(list(filter(None, [1, 'hello', [], [3], '', None, 9, 0])), [1, 'hello', [3], 9])
self.assertEqual(list(filter(lambda x: x > 0, [1, -3, 9, 0, 2])), [1, 9, 2])
self.assertEqual(list(filter(None, Squares(10))), [1, 4, 9, 16, 25, 36, 49, 64, 81])
self.assertEqual(list(filter(lambda x: x%2, Squares(10))), [1, 9, 25, 49, 81])
def identity(item):
return 1
filter(identity, Squares(5))
self.assertRaises(TypeError, filter)
class BadSeq(object):
def __getitem__(self, index):
if index<4:
return 42
raise ValueError
self.assertRaises(ValueError, list, filter(lambda x: x, BadSeq()))
def badfunc():
pass
self.assertRaises(TypeError, list, filter(badfunc, range(5)))
# test bltinmodule.c::filtertuple()
self.assertEqual(list(filter(None, (1, 2))), [1, 2])
self.assertEqual(list(filter(lambda x: x>=3, (1, 2, 3, 4))), [3, 4])
self.assertRaises(TypeError, list, filter(42, (1, 2)))
def test_filter_pickle(self):
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
f1 = filter(filter_char, "abcdeabcde")
f2 = filter(filter_char, "abcdeabcde")
self.check_iter_pickle(f1, list(f2), proto)
def test_getattr(self):
self.assertTrue(getattr(sys, 'stdout') is sys.stdout)
self.assertRaises(TypeError, getattr)
self.assertRaises(TypeError, getattr, sys)
msg = r"^attribute name must be string, not 'int'$"
self.assertRaisesRegex(TypeError, msg, getattr, sys, 1)
self.assertRaisesRegex(TypeError, msg, getattr, sys, 1, 'spam')
self.assertRaises(AttributeError, getattr, sys, chr(sys.maxunicode))
# unicode surrogates are not encodable to the default encoding (utf8)
self.assertRaises(AttributeError, getattr, 1, "\uDAD1\uD51E")
def test_hasattr(self):
self.assertTrue(hasattr(sys, 'stdout'))
self.assertRaises(TypeError, hasattr)
self.assertRaises(TypeError, hasattr, sys)
msg = r"^attribute name must be string, not 'int'$"
self.assertRaisesRegex(TypeError, msg, hasattr, sys, 1)
self.assertEqual(False, hasattr(sys, chr(sys.maxunicode)))
# Check that hasattr propagates all exceptions outside of
# AttributeError.
class A:
def __getattr__(self, what):
raise SystemExit
self.assertRaises(SystemExit, hasattr, A(), "b")
class B:
def __getattr__(self, what):
raise ValueError
self.assertRaises(ValueError, hasattr, B(), "b")
def test_hash(self):
hash(None)
self.assertEqual(hash(1), hash(1))
self.assertEqual(hash(1), hash(1.0))
hash('spam')
self.assertEqual(hash('spam'), hash(b'spam'))
hash((0,1,2,3))
def f(): pass
hash(f)
self.assertRaises(TypeError, hash, [])
self.assertRaises(TypeError, hash, {})
# Bug 1536021: Allow hash to return long objects
class X:
def __hash__(self):
return 2**100
self.assertEqual(type(hash(X())), int)
class Z(int):
def __hash__(self):
return self
self.assertEqual(hash(Z(42)), hash(42))
def test_hex(self):
self.assertEqual(hex(16), '0x10')
self.assertEqual(hex(-16), '-0x10')
self.assertRaises(TypeError, hex, {})