python (3.11.7)
1 import errno
2 import importlib
3 import io
4 import os
5 import shutil
6 import socket
7 import stat
8 import subprocess
9 import sys
10 import sysconfig
11 import tempfile
12 import textwrap
13 import unittest
14 import warnings
15
16 from test import support
17 from test.support import import_helper
18 from test.support import os_helper
19 from test.support import script_helper
20 from test.support import socket_helper
21 from test.support import warnings_helper
22
23 TESTFN = os_helper.TESTFN
24
25
26 class ESC[4;38;5;81mTestSupport(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
27 @classmethod
28 def setUpClass(cls):
29 orig_filter_len = len(warnings.filters)
30 cls._warnings_helper_token = support.ignore_deprecations_from(
31 "test.support.warnings_helper", like=".*used in test_support.*"
32 )
33 cls._test_support_token = support.ignore_deprecations_from(
34 __name__, like=".*You should NOT be seeing this.*"
35 )
36 assert len(warnings.filters) == orig_filter_len + 2
37
38 @classmethod
39 def tearDownClass(cls):
40 orig_filter_len = len(warnings.filters)
41 support.clear_ignored_deprecations(
42 cls._warnings_helper_token,
43 cls._test_support_token,
44 )
45 assert len(warnings.filters) == orig_filter_len - 2
46
47 def test_ignored_deprecations_are_silent(self):
48 """Test support.ignore_deprecations_from() silences warnings"""
49 with warnings.catch_warnings(record=True) as warning_objs:
50 warnings_helper._warn_about_deprecation()
51 warnings.warn("You should NOT be seeing this.", DeprecationWarning)
52 messages = [str(w.message) for w in warning_objs]
53 self.assertEqual(len(messages), 0, messages)
54
55 def test_import_module(self):
56 import_helper.import_module("ftplib")
57 self.assertRaises(unittest.SkipTest,
58 import_helper.import_module, "foo")
59
60 def test_import_fresh_module(self):
61 import_helper.import_fresh_module("ftplib")
62
63 def test_get_attribute(self):
64 self.assertEqual(support.get_attribute(self, "test_get_attribute"),
65 self.test_get_attribute)
66 self.assertRaises(unittest.SkipTest, support.get_attribute, self, "foo")
67
68 @unittest.skip("failing buildbots")
69 def test_get_original_stdout(self):
70 self.assertEqual(support.get_original_stdout(), sys.stdout)
71
72 def test_unload(self):
73 import sched
74 self.assertIn("sched", sys.modules)
75 import_helper.unload("sched")
76 self.assertNotIn("sched", sys.modules)
77
78 def test_unlink(self):
79 with open(TESTFN, "w", encoding="utf-8") as f:
80 pass
81 os_helper.unlink(TESTFN)
82 self.assertFalse(os.path.exists(TESTFN))
83 os_helper.unlink(TESTFN)
84
85 def test_rmtree(self):
86 dirpath = os_helper.TESTFN + 'd'
87 subdirpath = os.path.join(dirpath, 'subdir')
88 os.mkdir(dirpath)
89 os.mkdir(subdirpath)
90 os_helper.rmtree(dirpath)
91 self.assertFalse(os.path.exists(dirpath))
92 with support.swap_attr(support, 'verbose', 0):
93 os_helper.rmtree(dirpath)
94
95 os.mkdir(dirpath)
96 os.mkdir(subdirpath)
97 os.chmod(dirpath, stat.S_IRUSR|stat.S_IXUSR)
98 with support.swap_attr(support, 'verbose', 0):
99 os_helper.rmtree(dirpath)
100 self.assertFalse(os.path.exists(dirpath))
101
102 os.mkdir(dirpath)
103 os.mkdir(subdirpath)
104 os.chmod(dirpath, 0)
105 with support.swap_attr(support, 'verbose', 0):
106 os_helper.rmtree(dirpath)
107 self.assertFalse(os.path.exists(dirpath))
108
109 def test_forget(self):
110 mod_filename = TESTFN + '.py'
111 with open(mod_filename, 'w', encoding="utf-8") as f:
112 print('foo = 1', file=f)
113 sys.path.insert(0, os.curdir)
114 importlib.invalidate_caches()
115 try:
116 mod = __import__(TESTFN)
117 self.assertIn(TESTFN, sys.modules)
118
119 import_helper.forget(TESTFN)
120 self.assertNotIn(TESTFN, sys.modules)
121 finally:
122 del sys.path[0]
123 os_helper.unlink(mod_filename)
124 os_helper.rmtree('__pycache__')
125
126 @support.requires_working_socket()
127 def test_HOST(self):
128 s = socket.create_server((socket_helper.HOST, 0))
129 s.close()
130
131 @support.requires_working_socket()
132 def test_find_unused_port(self):
133 port = socket_helper.find_unused_port()
134 s = socket.create_server((socket_helper.HOST, port))
135 s.close()
136
137 @support.requires_working_socket()
138 def test_bind_port(self):
139 s = socket.socket()
140 socket_helper.bind_port(s)
141 s.listen()
142 s.close()
143
144 # Tests for temp_dir()
145
146 def test_temp_dir(self):
147 """Test that temp_dir() creates and destroys its directory."""
148 parent_dir = tempfile.mkdtemp()
149 parent_dir = os.path.realpath(parent_dir)
150
151 try:
152 path = os.path.join(parent_dir, 'temp')
153 self.assertFalse(os.path.isdir(path))
154 with os_helper.temp_dir(path) as temp_path:
155 self.assertEqual(temp_path, path)
156 self.assertTrue(os.path.isdir(path))
157 self.assertFalse(os.path.isdir(path))
158 finally:
159 os_helper.rmtree(parent_dir)
160
161 def test_temp_dir__path_none(self):
162 """Test passing no path."""
163 with os_helper.temp_dir() as temp_path:
164 self.assertTrue(os.path.isdir(temp_path))
165 self.assertFalse(os.path.isdir(temp_path))
166
167 def test_temp_dir__existing_dir__quiet_default(self):
168 """Test passing a directory that already exists."""
169 def call_temp_dir(path):
170 with os_helper.temp_dir(path) as temp_path:
171 raise Exception("should not get here")
172
173 path = tempfile.mkdtemp()
174 path = os.path.realpath(path)
175 try:
176 self.assertTrue(os.path.isdir(path))
177 self.assertRaises(FileExistsError, call_temp_dir, path)
178 # Make sure temp_dir did not delete the original directory.
179 self.assertTrue(os.path.isdir(path))
180 finally:
181 shutil.rmtree(path)
182
183 def test_temp_dir__existing_dir__quiet_true(self):
184 """Test passing a directory that already exists with quiet=True."""
185 path = tempfile.mkdtemp()
186 path = os.path.realpath(path)
187
188 try:
189 with warnings_helper.check_warnings() as recorder:
190 with os_helper.temp_dir(path, quiet=True) as temp_path:
191 self.assertEqual(path, temp_path)
192 warnings = [str(w.message) for w in recorder.warnings]
193 # Make sure temp_dir did not delete the original directory.
194 self.assertTrue(os.path.isdir(path))
195 finally:
196 shutil.rmtree(path)
197
198 self.assertEqual(len(warnings), 1, warnings)
199 warn = warnings[0]
200 self.assertTrue(warn.startswith(f'tests may fail, unable to create '
201 f'temporary directory {path!r}: '),
202 warn)
203
204 @support.requires_fork()
205 def test_temp_dir__forked_child(self):
206 """Test that a forked child process does not remove the directory."""
207 # See bpo-30028 for details.
208 # Run the test as an external script, because it uses fork.
209 script_helper.assert_python_ok("-c", textwrap.dedent("""
210 import os
211 from test import support
212 from test.support import os_helper
213 with os_helper.temp_cwd() as temp_path:
214 pid = os.fork()
215 if pid != 0:
216 # parent process
217
218 # wait for the child to terminate
219 support.wait_process(pid, exitcode=0)
220
221 # Make sure that temp_path is still present. When the child
222 # process leaves the 'temp_cwd'-context, the __exit__()-
223 # method of the context must not remove the temporary
224 # directory.
225 if not os.path.isdir(temp_path):
226 raise AssertionError("Child removed temp_path.")
227 """))
228
229 # Tests for change_cwd()
230
231 def test_change_cwd(self):
232 original_cwd = os.getcwd()
233
234 with os_helper.temp_dir() as temp_path:
235 with os_helper.change_cwd(temp_path) as new_cwd:
236 self.assertEqual(new_cwd, temp_path)
237 self.assertEqual(os.getcwd(), new_cwd)
238
239 self.assertEqual(os.getcwd(), original_cwd)
240
241 def test_change_cwd__non_existent_dir(self):
242 """Test passing a non-existent directory."""
243 original_cwd = os.getcwd()
244
245 def call_change_cwd(path):
246 with os_helper.change_cwd(path) as new_cwd:
247 raise Exception("should not get here")
248
249 with os_helper.temp_dir() as parent_dir:
250 non_existent_dir = os.path.join(parent_dir, 'does_not_exist')
251 self.assertRaises(FileNotFoundError, call_change_cwd,
252 non_existent_dir)
253
254 self.assertEqual(os.getcwd(), original_cwd)
255
256 def test_change_cwd__non_existent_dir__quiet_true(self):
257 """Test passing a non-existent directory with quiet=True."""
258 original_cwd = os.getcwd()
259
260 with os_helper.temp_dir() as parent_dir:
261 bad_dir = os.path.join(parent_dir, 'does_not_exist')
262 with warnings_helper.check_warnings() as recorder:
263 with os_helper.change_cwd(bad_dir, quiet=True) as new_cwd:
264 self.assertEqual(new_cwd, original_cwd)
265 self.assertEqual(os.getcwd(), new_cwd)
266 warnings = [str(w.message) for w in recorder.warnings]
267
268 self.assertEqual(len(warnings), 1, warnings)
269 warn = warnings[0]
270 self.assertTrue(warn.startswith(f'tests may fail, unable to change '
271 f'the current working directory '
272 f'to {bad_dir!r}: '),
273 warn)
274
275 # Tests for change_cwd()
276
277 def test_change_cwd__chdir_warning(self):
278 """Check the warning message when os.chdir() fails."""
279 path = TESTFN + '_does_not_exist'
280 with warnings_helper.check_warnings() as recorder:
281 with os_helper.change_cwd(path=path, quiet=True):
282 pass
283 messages = [str(w.message) for w in recorder.warnings]
284
285 self.assertEqual(len(messages), 1, messages)
286 msg = messages[0]
287 self.assertTrue(msg.startswith(f'tests may fail, unable to change '
288 f'the current working directory '
289 f'to {path!r}: '),
290 msg)
291
292 # Tests for temp_cwd()
293
294 def test_temp_cwd(self):
295 here = os.getcwd()
296 with os_helper.temp_cwd(name=TESTFN):
297 self.assertEqual(os.path.basename(os.getcwd()), TESTFN)
298 self.assertFalse(os.path.exists(TESTFN))
299 self.assertEqual(os.getcwd(), here)
300
301
302 def test_temp_cwd__name_none(self):
303 """Test passing None to temp_cwd()."""
304 original_cwd = os.getcwd()
305 with os_helper.temp_cwd(name=None) as new_cwd:
306 self.assertNotEqual(new_cwd, original_cwd)
307 self.assertTrue(os.path.isdir(new_cwd))
308 self.assertEqual(os.getcwd(), new_cwd)
309 self.assertEqual(os.getcwd(), original_cwd)
310
311 def test_sortdict(self):
312 self.assertEqual(support.sortdict({3:3, 2:2, 1:1}), "{1: 1, 2: 2, 3: 3}")
313
314 def test_make_bad_fd(self):
315 fd = os_helper.make_bad_fd()
316 with self.assertRaises(OSError) as cm:
317 os.write(fd, b"foo")
318 self.assertEqual(cm.exception.errno, errno.EBADF)
319
320 def test_check_syntax_error(self):
321 support.check_syntax_error(self, "def class", lineno=1, offset=5)
322 with self.assertRaises(AssertionError):
323 support.check_syntax_error(self, "x=1")
324
325 def test_CleanImport(self):
326 import importlib
327 with import_helper.CleanImport("pprint"):
328 importlib.import_module("pprint")
329
330 def test_DirsOnSysPath(self):
331 with import_helper.DirsOnSysPath('foo', 'bar'):
332 self.assertIn("foo", sys.path)
333 self.assertIn("bar", sys.path)
334 self.assertNotIn("foo", sys.path)
335 self.assertNotIn("bar", sys.path)
336
337 def test_captured_stdout(self):
338 with support.captured_stdout() as stdout:
339 print("hello")
340 self.assertEqual(stdout.getvalue(), "hello\n")
341
342 def test_captured_stderr(self):
343 with support.captured_stderr() as stderr:
344 print("hello", file=sys.stderr)
345 self.assertEqual(stderr.getvalue(), "hello\n")
346
347 def test_captured_stdin(self):
348 with support.captured_stdin() as stdin:
349 stdin.write('hello\n')
350 stdin.seek(0)
351 # call test code that consumes from sys.stdin
352 captured = input()
353 self.assertEqual(captured, "hello")
354
355 def test_gc_collect(self):
356 support.gc_collect()
357
358 def test_python_is_optimized(self):
359 self.assertIsInstance(support.python_is_optimized(), bool)
360
361 def test_swap_attr(self):
362 class ESC[4;38;5;81mObj:
363 pass
364 obj = Obj()
365 obj.x = 1
366 with support.swap_attr(obj, "x", 5) as x:
367 self.assertEqual(obj.x, 5)
368 self.assertEqual(x, 1)
369 self.assertEqual(obj.x, 1)
370 with support.swap_attr(obj, "y", 5) as y:
371 self.assertEqual(obj.y, 5)
372 self.assertIsNone(y)
373 self.assertFalse(hasattr(obj, 'y'))
374 with support.swap_attr(obj, "y", 5):
375 del obj.y
376 self.assertFalse(hasattr(obj, 'y'))
377
378 def test_swap_item(self):
379 D = {"x":1}
380 with support.swap_item(D, "x", 5) as x:
381 self.assertEqual(D["x"], 5)
382 self.assertEqual(x, 1)
383 self.assertEqual(D["x"], 1)
384 with support.swap_item(D, "y", 5) as y:
385 self.assertEqual(D["y"], 5)
386 self.assertIsNone(y)
387 self.assertNotIn("y", D)
388 with support.swap_item(D, "y", 5):
389 del D["y"]
390 self.assertNotIn("y", D)
391
392 class ESC[4;38;5;81mRefClass:
393 attribute1 = None
394 attribute2 = None
395 _hidden_attribute1 = None
396 __magic_1__ = None
397
398 class ESC[4;38;5;81mOtherClass:
399 attribute2 = None
400 attribute3 = None
401 __magic_1__ = None
402 __magic_2__ = None
403
404 def test_detect_api_mismatch(self):
405 missing_items = support.detect_api_mismatch(self.RefClass,
406 self.OtherClass)
407 self.assertEqual({'attribute1'}, missing_items)
408
409 missing_items = support.detect_api_mismatch(self.OtherClass,
410 self.RefClass)
411 self.assertEqual({'attribute3', '__magic_2__'}, missing_items)
412
413 def test_detect_api_mismatch__ignore(self):
414 ignore = ['attribute1', 'attribute3', '__magic_2__', 'not_in_either']
415
416 missing_items = support.detect_api_mismatch(
417 self.RefClass, self.OtherClass, ignore=ignore)
418 self.assertEqual(set(), missing_items)
419
420 missing_items = support.detect_api_mismatch(
421 self.OtherClass, self.RefClass, ignore=ignore)
422 self.assertEqual(set(), missing_items)
423
424 def test_check__all__(self):
425 extra = {'tempdir'}
426 not_exported = {'template'}
427 support.check__all__(self,
428 tempfile,
429 extra=extra,
430 not_exported=not_exported)
431
432 extra = {
433 'TextTestResult',
434 'findTestCases',
435 'getTestCaseNames',
436 'installHandler',
437 'makeSuite',
438 }
439 not_exported = {'load_tests', "TestProgram", "BaseTestSuite"}
440 support.check__all__(self,
441 unittest,
442 ("unittest.result", "unittest.case",
443 "unittest.suite", "unittest.loader",
444 "unittest.main", "unittest.runner",
445 "unittest.signals", "unittest.async_case"),
446 extra=extra,
447 not_exported=not_exported)
448
449 self.assertRaises(AssertionError, support.check__all__, self, unittest)
450
451 @unittest.skipUnless(hasattr(os, 'waitpid') and hasattr(os, 'WNOHANG'),
452 'need os.waitpid() and os.WNOHANG')
453 @support.requires_fork()
454 def test_reap_children(self):
455 # Make sure that there is no other pending child process
456 support.reap_children()
457
458 # Create a child process
459 pid = os.fork()
460 if pid == 0:
461 # child process: do nothing, just exit
462 os._exit(0)
463
464 was_altered = support.environment_altered
465 try:
466 support.environment_altered = False
467 stderr = io.StringIO()
468
469 for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
470 with support.swap_attr(support.print_warning, 'orig_stderr', stderr):
471 support.reap_children()
472
473 # Use environment_altered to check if reap_children() found
474 # the child process
475 if support.environment_altered:
476 break
477
478 msg = "Warning -- reap_children() reaped child process %s" % pid
479 self.assertIn(msg, stderr.getvalue())
480 self.assertTrue(support.environment_altered)
481 finally:
482 support.environment_altered = was_altered
483
484 # Just in case, check again that there is no other
485 # pending child process
486 support.reap_children()
487
488 @support.requires_subprocess()
489 def check_options(self, args, func, expected=None):
490 code = f'from test.support import {func}; print(repr({func}()))'
491 cmd = [sys.executable, *args, '-c', code]
492 env = {key: value for key, value in os.environ.items()
493 if not key.startswith('PYTHON')}
494 proc = subprocess.run(cmd,
495 stdout=subprocess.PIPE,
496 stderr=subprocess.DEVNULL,
497 universal_newlines=True,
498 env=env)
499 if expected is None:
500 expected = args
501 self.assertEqual(proc.stdout.rstrip(), repr(expected))
502 self.assertEqual(proc.returncode, 0)
503
504 @support.requires_resource('cpu')
505 def test_args_from_interpreter_flags(self):
506 # Test test.support.args_from_interpreter_flags()
507 for opts in (
508 # no option
509 [],
510 # single option
511 ['-B'],
512 ['-s'],
513 ['-S'],
514 ['-E'],
515 ['-v'],
516 ['-b'],
517 ['-P'],
518 ['-q'],
519 ['-I'],
520 # same option multiple times
521 ['-bb'],
522 ['-vvv'],
523 # -W options
524 ['-Wignore'],
525 # -X options
526 ['-X', 'dev'],
527 ['-Wignore', '-X', 'dev'],
528 ['-X', 'faulthandler'],
529 ['-X', 'importtime'],
530 ['-X', 'showrefcount'],
531 ['-X', 'tracemalloc'],
532 ['-X', 'tracemalloc=3'],
533 ):
534 with self.subTest(opts=opts):
535 self.check_options(opts, 'args_from_interpreter_flags')
536
537 self.check_options(['-I', '-E', '-s', '-P'],
538 'args_from_interpreter_flags',
539 ['-I'])
540
541 def test_optim_args_from_interpreter_flags(self):
542 # Test test.support.optim_args_from_interpreter_flags()
543 for opts in (
544 # no option
545 [],
546 ['-O'],
547 ['-OO'],
548 ['-OOOO'],
549 ):
550 with self.subTest(opts=opts):
551 self.check_options(opts, 'optim_args_from_interpreter_flags')
552
553 @unittest.skipIf(support.is_emscripten, "Unstable in Emscripten")
554 @unittest.skipIf(support.is_wasi, "Unavailable on WASI")
555 def test_fd_count(self):
556 # We cannot test the absolute value of fd_count(): on old Linux
557 # kernel or glibc versions, os.urandom() keeps a FD open on
558 # /dev/urandom device and Python has 4 FD opens instead of 3.
559 # Test is unstable on Emscripten. The platform starts and stops
560 # background threads that use pipes and epoll fds.
561 start = os_helper.fd_count()
562 fd = os.open(__file__, os.O_RDONLY)
563 try:
564 more = os_helper.fd_count()
565 finally:
566 os.close(fd)
567 self.assertEqual(more - start, 1)
568
569 def check_print_warning(self, msg, expected):
570 stderr = io.StringIO()
571 with support.swap_attr(support.print_warning, 'orig_stderr', stderr):
572 support.print_warning(msg)
573 self.assertEqual(stderr.getvalue(), expected)
574
575 def test_print_warning(self):
576 self.check_print_warning("msg",
577 "Warning -- msg\n")
578 self.check_print_warning("a\nb",
579 'Warning -- a\nWarning -- b\n')
580
581 def test_has_strftime_extensions(self):
582 if support.is_emscripten or sys.platform == "win32":
583 self.assertFalse(support.has_strftime_extensions)
584 else:
585 self.assertTrue(support.has_strftime_extensions)
586
587 def test_get_recursion_depth(self):
588 # test support.get_recursion_depth()
589 code = textwrap.dedent("""
590 from test import support
591 import sys
592 try:
593 from _testcapi import USE_STACKCHECK
594 except ImportError:
595 USE_STACKCHECK = False
596
597 def check(cond):
598 if not cond:
599 raise AssertionError("test failed")
600
601 # depth 1
602 check(support.get_recursion_depth() == 1)
603
604 # depth 2
605 def test_func():
606 check(support.get_recursion_depth() == 2)
607 test_func()
608
609 def test_recursive(depth, limit):
610 if depth >= limit:
611 # cannot call get_recursion_depth() at this depth,
612 # it can raise RecursionError
613 return
614 get_depth = support.get_recursion_depth()
615 print(f"test_recursive: {depth}/{limit}: "
616 f"get_recursion_depth() says {get_depth}")
617 check(get_depth == depth)
618 test_recursive(depth + 1, limit)
619
620 if USE_STACKCHECK:
621 # f-string consumes 2 frames and -1 for USE_STACKCHECK
622 IGNORE = 3
623 else:
624 # f-string consumes 2 frames
625 IGNORE = 2
626
627 # depth up to 25
628 with support.infinite_recursion(max_depth=25):
629 limit = sys.getrecursionlimit()
630 print(f"test with sys.getrecursionlimit()={limit}")
631 test_recursive(2, limit - IGNORE)
632
633 # depth up to 500
634 with support.infinite_recursion(max_depth=500):
635 limit = sys.getrecursionlimit()
636 print(f"test with sys.getrecursionlimit()={limit}")
637 test_recursive(2, limit - IGNORE)
638 """)
639 script_helper.assert_python_ok("-c", code)
640
641 def test_recursion(self):
642 # Test infinite_recursion() and get_recursion_available() functions.
643 def recursive_function(depth):
644 if depth:
645 recursive_function(depth - 1)
646
647 for max_depth in (5, 25, 250):
648 with support.infinite_recursion(max_depth):
649 available = support.get_recursion_available()
650
651 # Recursion up to 'available' additional frames should be OK.
652 recursive_function(available)
653
654 # Recursion up to 'available+1' additional frames must raise
655 # RecursionError. Avoid self.assertRaises(RecursionError) which
656 # can consume more than 3 frames and so raises RecursionError.
657 try:
658 recursive_function(available + 1)
659 except RecursionError:
660 pass
661 else:
662 self.fail("RecursionError was not raised")
663
664 # Test the bare minimumum: max_depth=4
665 with support.infinite_recursion(4):
666 try:
667 recursive_function(4)
668 except RecursionError:
669 pass
670 else:
671 self.fail("RecursionError was not raised")
672
673 def test_parse_memlimit(self):
674 parse = support._parse_memlimit
675 KiB = 1024
676 MiB = KiB * 1024
677 GiB = MiB * 1024
678 TiB = GiB * 1024
679 self.assertEqual(parse('0k'), 0)
680 self.assertEqual(parse('3k'), 3 * KiB)
681 self.assertEqual(parse('2.4m'), int(2.4 * MiB))
682 self.assertEqual(parse('4g'), int(4 * GiB))
683 self.assertEqual(parse('1t'), TiB)
684
685 for limit in ('', '3', '3.5.10k', '10x'):
686 with self.subTest(limit=limit):
687 with self.assertRaises(ValueError):
688 parse(limit)
689
690 def test_set_memlimit(self):
691 _4GiB = 4 * 1024 ** 3
692 TiB = 1024 ** 4
693 old_max_memuse = support.max_memuse
694 old_real_max_memuse = support.real_max_memuse
695 try:
696 if sys.maxsize > 2**32:
697 support.set_memlimit('4g')
698 self.assertEqual(support.max_memuse, _4GiB)
699 self.assertEqual(support.real_max_memuse, _4GiB)
700
701 big = 2**100 // TiB
702 support.set_memlimit(f'{big}t')
703 self.assertEqual(support.max_memuse, sys.maxsize)
704 self.assertEqual(support.real_max_memuse, big * TiB)
705 else:
706 support.set_memlimit('4g')
707 self.assertEqual(support.max_memuse, sys.maxsize)
708 self.assertEqual(support.real_max_memuse, _4GiB)
709 finally:
710 support.max_memuse = old_max_memuse
711 support.real_max_memuse = old_real_max_memuse
712
713 def test_copy_python_src_ignore(self):
714 # Get source directory
715 src_dir = sysconfig.get_config_var('abs_srcdir')
716 if not src_dir:
717 src_dir = sysconfig.get_config_var('srcdir')
718 src_dir = os.path.abspath(src_dir)
719
720 # Check that the source code is available
721 if not os.path.exists(src_dir):
722 self.skipTest(f"cannot access Python source code directory:"
723 f" {src_dir!r}")
724 # Check that the landmark copy_python_src_ignore() expects is available
725 # (Previously we looked for 'Lib\os.py', which is always present on Windows.)
726 landmark = os.path.join(src_dir, 'Modules')
727 if not os.path.exists(landmark):
728 self.skipTest(f"cannot access Python source code directory:"
729 f" {landmark!r} landmark is missing")
730
731 # Test support.copy_python_src_ignore()
732
733 # Source code directory
734 ignored = {'.git', '__pycache__'}
735 names = os.listdir(src_dir)
736 self.assertEqual(support.copy_python_src_ignore(src_dir, names),
737 ignored | {'build'})
738
739 # Doc/ directory
740 path = os.path.join(src_dir, 'Doc')
741 self.assertEqual(support.copy_python_src_ignore(path, os.listdir(path)),
742 ignored | {'build', 'venv'})
743
744 # Another directory
745 path = os.path.join(src_dir, 'Objects')
746 self.assertEqual(support.copy_python_src_ignore(path, os.listdir(path)),
747 ignored)
748
749 # XXX -follows a list of untested API
750 # make_legacy_pyc
751 # is_resource_enabled
752 # requires
753 # fcmp
754 # umaks
755 # findfile
756 # check_warnings
757 # EnvironmentVarGuard
758 # transient_internet
759 # run_with_locale
760 # bigmemtest
761 # precisionbigmemtest
762 # bigaddrspacetest
763 # requires_resource
764 # threading_cleanup
765 # reap_threads
766 # can_symlink
767 # skip_unless_symlink
768 # SuppressCrashReport
769
770
771 if __name__ == '__main__':
772 unittest.main()
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