Python code coverage for Lib/test/test_sys.py

#	count	content
1	n/a	import unittest, test.support
2	n/a	from test.support.script_helper import assert_python_ok, assert_python_failure
3	n/a	import sys, io, os
4	n/a	import struct
5	n/a	import subprocess
6	n/a	import textwrap
7	n/a	import warnings
8	n/a	import operator
9	n/a	import codecs
10	n/a	import gc
11	n/a	import sysconfig
12	n/a	import platform
13	n/a	import locale
14	n/a
15	n/a	# count the number of test runs, used to create unique
16	n/a	# strings to intern in test_intern()
17	n/a	numruns = 0
18	n/a
19	n/a	try:
20	n/a	import threading
21	n/a	except ImportError:
22	n/a	threading = None
23	n/a
24	n/a	class SysModuleTest(unittest.TestCase):
25	n/a
26	n/a	def setUp(self):
27	n/a	self.orig_stdout = sys.stdout
28	n/a	self.orig_stderr = sys.stderr
29	n/a	self.orig_displayhook = sys.displayhook
30	n/a
31	n/a	def tearDown(self):
32	n/a	sys.stdout = self.orig_stdout
33	n/a	sys.stderr = self.orig_stderr
34	n/a	sys.displayhook = self.orig_displayhook
35	n/a	test.support.reap_children()
36	n/a
37	n/a	def test_original_displayhook(self):
38	n/a	import builtins
39	n/a	out = io.StringIO()
40	n/a	sys.stdout = out
41	n/a
42	n/a	dh = sys.__displayhook__
43	n/a
44	n/a	self.assertRaises(TypeError, dh)
45	n/a	if hasattr(builtins, "_"):
46	n/a	del builtins._
47	n/a
48	n/a	dh(None)
49	n/a	self.assertEqual(out.getvalue(), "")
50	n/a	self.assertTrue(not hasattr(builtins, "_"))
51	n/a	dh(42)
52	n/a	self.assertEqual(out.getvalue(), "42\n")
53	n/a	self.assertEqual(builtins._, 42)
54	n/a
55	n/a	del sys.stdout
56	n/a	self.assertRaises(RuntimeError, dh, 42)
57	n/a
58	n/a	def test_lost_displayhook(self):
59	n/a	del sys.displayhook
60	n/a	code = compile("42", "<string>", "single")
61	n/a	self.assertRaises(RuntimeError, eval, code)
62	n/a
63	n/a	def test_custom_displayhook(self):
64	n/a	def baddisplayhook(obj):
65	n/a	raise ValueError
66	n/a	sys.displayhook = baddisplayhook
67	n/a	code = compile("42", "<string>", "single")
68	n/a	self.assertRaises(ValueError, eval, code)
69	n/a
70	n/a	def test_original_excepthook(self):
71	n/a	err = io.StringIO()
72	n/a	sys.stderr = err
73	n/a
74	n/a	eh = sys.__excepthook__
75	n/a
76	n/a	self.assertRaises(TypeError, eh)
77	n/a	try:
78	n/a	raise ValueError(42)
79	n/a	except ValueError as exc:
80	n/a	eh(*sys.exc_info())
81	n/a
82	n/a	self.assertTrue(err.getvalue().endswith("ValueError: 42\n"))
83	n/a
84	n/a	def test_excepthook(self):
85	n/a	with test.support.captured_output("stderr") as stderr:
86	n/a	sys.excepthook(1, '1', 1)
87	n/a	self.assertTrue("TypeError: print_exception(): Exception expected for " \
88	n/a	"value, str found" in stderr.getvalue())
89	n/a
90	n/a	# FIXME: testing the code for a lost or replaced excepthook in
91	n/a	# Python/pythonrun.c::PyErr_PrintEx() is tricky.
92	n/a
93	n/a	def test_exit(self):
94	n/a	# call with two arguments
95	n/a	self.assertRaises(TypeError, sys.exit, 42, 42)
96	n/a
97	n/a	# call without argument
98	n/a	with self.assertRaises(SystemExit) as cm:
99	n/a	sys.exit()
100	n/a	self.assertIsNone(cm.exception.code)
101	n/a
102	n/a	rc, out, err = assert_python_ok('-c', 'import sys; sys.exit()')
103	n/a	self.assertEqual(rc, 0)
104	n/a	self.assertEqual(out, b'')
105	n/a	self.assertEqual(err, b'')
106	n/a
107	n/a	# call with integer argument
108	n/a	with self.assertRaises(SystemExit) as cm:
109	n/a	sys.exit(42)
110	n/a	self.assertEqual(cm.exception.code, 42)
111	n/a
112	n/a	# call with tuple argument with one entry
113	n/a	# entry will be unpacked
114	n/a	with self.assertRaises(SystemExit) as cm:
115	n/a	sys.exit((42,))
116	n/a	self.assertEqual(cm.exception.code, 42)
117	n/a
118	n/a	# call with string argument
119	n/a	with self.assertRaises(SystemExit) as cm:
120	n/a	sys.exit("exit")
121	n/a	self.assertEqual(cm.exception.code, "exit")
122	n/a
123	n/a	# call with tuple argument with two entries
124	n/a	with self.assertRaises(SystemExit) as cm:
125	n/a	sys.exit((17, 23))
126	n/a	self.assertEqual(cm.exception.code, (17, 23))
127	n/a
128	n/a	# test that the exit machinery handles SystemExits properly
129	n/a	rc, out, err = assert_python_failure('-c', 'raise SystemExit(47)')
130	n/a	self.assertEqual(rc, 47)
131	n/a	self.assertEqual(out, b'')
132	n/a	self.assertEqual(err, b'')
133	n/a
134	n/a	def check_exit_message(code, expected, **env_vars):
135	n/a	rc, out, err = assert_python_failure('-c', code, **env_vars)
136	n/a	self.assertEqual(rc, 1)
137	n/a	self.assertEqual(out, b'')
138	n/a	self.assertTrue(err.startswith(expected),
139	n/a	"%s doesn't start with %s" % (ascii(err), ascii(expected)))
140	n/a
141	n/a	# test that stderr buffer is flushed before the exit message is written
142	n/a	# into stderr
143	n/a	check_exit_message(
144	n/a	r'import sys; sys.stderr.write("unflushed,"); sys.exit("message")',
145	n/a	b"unflushed,message")
146	n/a
147	n/a	# test that the exit message is written with backslashreplace error
148	n/a	# handler to stderr
149	n/a	check_exit_message(
150	n/a	r'import sys; sys.exit("surrogates:\uDCFF")',
151	n/a	b"surrogates:\\udcff")
152	n/a
153	n/a	# test that the unicode message is encoded to the stderr encoding
154	n/a	# instead of the default encoding (utf8)
155	n/a	check_exit_message(
156	n/a	r'import sys; sys.exit("h\xe9")',
157	n/a	b"h\xe9", PYTHONIOENCODING='latin-1')
158	n/a
159	n/a	def test_getdefaultencoding(self):
160	n/a	self.assertRaises(TypeError, sys.getdefaultencoding, 42)
161	n/a	# can't check more than the type, as the user might have changed it
162	n/a	self.assertIsInstance(sys.getdefaultencoding(), str)
163	n/a
164	n/a	# testing sys.settrace() is done in test_sys_settrace.py
165	n/a	# testing sys.setprofile() is done in test_sys_setprofile.py
166	n/a
167	n/a	def test_setcheckinterval(self):
168	n/a	with warnings.catch_warnings():
169	n/a	warnings.simplefilter("ignore")
170	n/a	self.assertRaises(TypeError, sys.setcheckinterval)
171	n/a	orig = sys.getcheckinterval()
172	n/a	for n in 0, 100, 120, orig: # orig last to restore starting state
173	n/a	sys.setcheckinterval(n)
174	n/a	self.assertEqual(sys.getcheckinterval(), n)
175	n/a
176	n/a	@unittest.skipUnless(threading, 'Threading required for this test.')
177	n/a	def test_switchinterval(self):
178	n/a	self.assertRaises(TypeError, sys.setswitchinterval)
179	n/a	self.assertRaises(TypeError, sys.setswitchinterval, "a")
180	n/a	self.assertRaises(ValueError, sys.setswitchinterval, -1.0)
181	n/a	self.assertRaises(ValueError, sys.setswitchinterval, 0.0)
182	n/a	orig = sys.getswitchinterval()
183	n/a	# sanity check
184	n/a	self.assertTrue(orig < 0.5, orig)
185	n/a	try:
186	n/a	for n in 0.00001, 0.05, 3.0, orig:
187	n/a	sys.setswitchinterval(n)
188	n/a	self.assertAlmostEqual(sys.getswitchinterval(), n)
189	n/a	finally:
190	n/a	sys.setswitchinterval(orig)
191	n/a
192	n/a	def test_recursionlimit(self):
193	n/a	self.assertRaises(TypeError, sys.getrecursionlimit, 42)
194	n/a	oldlimit = sys.getrecursionlimit()
195	n/a	self.assertRaises(TypeError, sys.setrecursionlimit)
196	n/a	self.assertRaises(ValueError, sys.setrecursionlimit, -42)
197	n/a	sys.setrecursionlimit(10000)
198	n/a	self.assertEqual(sys.getrecursionlimit(), 10000)
199	n/a	sys.setrecursionlimit(oldlimit)
200	n/a
201	n/a	def test_recursionlimit_recovery(self):
202	n/a	if hasattr(sys, 'gettrace') and sys.gettrace():
203	n/a	self.skipTest('fatal error if run with a trace function')
204	n/a
205	n/a	oldlimit = sys.getrecursionlimit()
206	n/a	def f():
207	n/a	f()
208	n/a	try:
209	n/a	for depth in (10, 25, 50, 75, 100, 250, 1000):
210	n/a	try:
211	n/a	sys.setrecursionlimit(depth)
212	n/a	except RecursionError:
213	n/a	# Issue #25274: The recursion limit is too low at the
214	n/a	# current recursion depth
215	n/a	continue
216	n/a
217	n/a	# Issue #5392: test stack overflow after hitting recursion
218	n/a	# limit twice
219	n/a	self.assertRaises(RecursionError, f)
220	n/a	self.assertRaises(RecursionError, f)
221	n/a	finally:
222	n/a	sys.setrecursionlimit(oldlimit)
223	n/a
224	n/a	@test.support.cpython_only
225	n/a	def test_setrecursionlimit_recursion_depth(self):
226	n/a	# Issue #25274: Setting a low recursion limit must be blocked if the
227	n/a	# current recursion depth is already higher than the "lower-water
228	n/a	# mark". Otherwise, it may not be possible anymore to
229	n/a	# reset the overflowed flag to 0.
230	n/a
231	n/a	from _testcapi import get_recursion_depth
232	n/a
233	n/a	def set_recursion_limit_at_depth(depth, limit):
234	n/a	recursion_depth = get_recursion_depth()
235	n/a	if recursion_depth >= depth:
236	n/a	with self.assertRaises(RecursionError) as cm:
237	n/a	sys.setrecursionlimit(limit)
238	n/a	self.assertRegex(str(cm.exception),
239	n/a	"cannot set the recursion limit to [0-9]+ "
240	n/a	"at the recursion depth [0-9]+: "
241	n/a	"the limit is too low")
242	n/a	else:
243	n/a	set_recursion_limit_at_depth(depth, limit)
244	n/a
245	n/a	oldlimit = sys.getrecursionlimit()
246	n/a	try:
247	n/a	sys.setrecursionlimit(1000)
248	n/a
249	n/a	for limit in (10, 25, 50, 75, 100, 150, 200):
250	n/a	# formula extracted from _Py_RecursionLimitLowerWaterMark()
251	n/a	if limit > 200:
252	n/a	depth = limit - 50
253	n/a	else:
254	n/a	depth = limit * 3 // 4
255	n/a	set_recursion_limit_at_depth(depth, limit)
256	n/a	finally:
257	n/a	sys.setrecursionlimit(oldlimit)
258	n/a
259	n/a	def test_recursionlimit_fatalerror(self):
260	n/a	# A fatal error occurs if a second recursion limit is hit when recovering
261	n/a	# from a first one.
262	n/a	code = textwrap.dedent("""
263	n/a	import sys
264	n/a
265	n/a	def f():
266	n/a	try:
267	n/a	f()
268	n/a	except RecursionError:
269	n/a	f()
270	n/a
271	n/a	sys.setrecursionlimit(%d)
272	n/a	f()""")
273	n/a	with test.support.SuppressCrashReport():
274	n/a	for i in (50, 1000):
275	n/a	sub = subprocess.Popen([sys.executable, '-c', code % i],
276	n/a	stderr=subprocess.PIPE)
277	n/a	err = sub.communicate()[1]
278	n/a	self.assertTrue(sub.returncode, sub.returncode)
279	n/a	self.assertIn(
280	n/a	b"Fatal Python error: Cannot recover from stack overflow",
281	n/a	err)
282	n/a
283	n/a	def test_getwindowsversion(self):
284	n/a	# Raise SkipTest if sys doesn't have getwindowsversion attribute
285	n/a	test.support.get_attribute(sys, "getwindowsversion")
286	n/a	v = sys.getwindowsversion()
287	n/a	self.assertEqual(len(v), 5)
288	n/a	self.assertIsInstance(v[0], int)
289	n/a	self.assertIsInstance(v[1], int)
290	n/a	self.assertIsInstance(v[2], int)
291	n/a	self.assertIsInstance(v[3], int)
292	n/a	self.assertIsInstance(v[4], str)
293	n/a	self.assertRaises(IndexError, operator.getitem, v, 5)
294	n/a	self.assertIsInstance(v.major, int)
295	n/a	self.assertIsInstance(v.minor, int)
296	n/a	self.assertIsInstance(v.build, int)
297	n/a	self.assertIsInstance(v.platform, int)
298	n/a	self.assertIsInstance(v.service_pack, str)
299	n/a	self.assertIsInstance(v.service_pack_minor, int)
300	n/a	self.assertIsInstance(v.service_pack_major, int)
301	n/a	self.assertIsInstance(v.suite_mask, int)
302	n/a	self.assertIsInstance(v.product_type, int)
303	n/a	self.assertEqual(v[0], v.major)
304	n/a	self.assertEqual(v[1], v.minor)
305	n/a	self.assertEqual(v[2], v.build)
306	n/a	self.assertEqual(v[3], v.platform)
307	n/a	self.assertEqual(v[4], v.service_pack)
308	n/a
309	n/a	# This is how platform.py calls it. Make sure tuple
310	n/a	# still has 5 elements
311	n/a	maj, min, buildno, plat, csd = sys.getwindowsversion()
312	n/a
313	n/a	def test_call_tracing(self):
314	n/a	self.assertRaises(TypeError, sys.call_tracing, type, 2)
315	n/a
316	n/a	@unittest.skipUnless(hasattr(sys, "setdlopenflags"),
317	n/a	'test needs sys.setdlopenflags()')
318	n/a	def test_dlopenflags(self):
319	n/a	self.assertTrue(hasattr(sys, "getdlopenflags"))
320	n/a	self.assertRaises(TypeError, sys.getdlopenflags, 42)
321	n/a	oldflags = sys.getdlopenflags()
322	n/a	self.assertRaises(TypeError, sys.setdlopenflags)
323	n/a	sys.setdlopenflags(oldflags+1)
324	n/a	self.assertEqual(sys.getdlopenflags(), oldflags+1)
325	n/a	sys.setdlopenflags(oldflags)
326	n/a
327	n/a	@test.support.refcount_test
328	n/a	def test_refcount(self):
329	n/a	# n here must be a global in order for this test to pass while
330	n/a	# tracing with a python function. Tracing calls PyFrame_FastToLocals
331	n/a	# which will add a copy of any locals to the frame object, causing
332	n/a	# the reference count to increase by 2 instead of 1.
333	n/a	global n
334	n/a	self.assertRaises(TypeError, sys.getrefcount)
335	n/a	c = sys.getrefcount(None)
336	n/a	n = None
337	n/a	self.assertEqual(sys.getrefcount(None), c+1)
338	n/a	del n
339	n/a	self.assertEqual(sys.getrefcount(None), c)
340	n/a	if hasattr(sys, "gettotalrefcount"):
341	n/a	self.assertIsInstance(sys.gettotalrefcount(), int)
342	n/a
343	n/a	def test_getframe(self):
344	n/a	self.assertRaises(TypeError, sys._getframe, 42, 42)
345	n/a	self.assertRaises(ValueError, sys._getframe, 2000000000)
346	n/a	self.assertTrue(
347	n/a	SysModuleTest.test_getframe.__code__ \
348	n/a	is sys._getframe().f_code
349	n/a	)
350	n/a
351	n/a	# sys._current_frames() is a CPython-only gimmick.
352	n/a	def test_current_frames(self):
353	n/a	have_threads = True
354	n/a	try:
355	n/a	import _thread
356	n/a	except ImportError:
357	n/a	have_threads = False
358	n/a
359	n/a	if have_threads:
360	n/a	self.current_frames_with_threads()
361	n/a	else:
362	n/a	self.current_frames_without_threads()
363	n/a
364	n/a	# Test sys._current_frames() in a WITH_THREADS build.
365	n/a	@test.support.reap_threads
366	n/a	def current_frames_with_threads(self):
367	n/a	import threading
368	n/a	import traceback
369	n/a
370	n/a	# Spawn a thread that blocks at a known place. Then the main
371	n/a	# thread does sys._current_frames(), and verifies that the frames
372	n/a	# returned make sense.
373	n/a	entered_g = threading.Event()
374	n/a	leave_g = threading.Event()
375	n/a	thread_info = [] # the thread's id
376	n/a
377	n/a	def f123():
378	n/a	g456()
379	n/a
380	n/a	def g456():
381	n/a	thread_info.append(threading.get_ident())
382	n/a	entered_g.set()
383	n/a	leave_g.wait()
384	n/a
385	n/a	t = threading.Thread(target=f123)
386	n/a	t.start()
387	n/a	entered_g.wait()
388	n/a
389	n/a	# At this point, t has finished its entered_g.set(), although it's
390	n/a	# impossible to guess whether it's still on that line or has moved on
391	n/a	# to its leave_g.wait().
392	n/a	self.assertEqual(len(thread_info), 1)
393	n/a	thread_id = thread_info[0]
394	n/a
395	n/a	d = sys._current_frames()
396	n/a
397	n/a	main_id = threading.get_ident()
398	n/a	self.assertIn(main_id, d)
399	n/a	self.assertIn(thread_id, d)
400	n/a
401	n/a	# Verify that the captured main-thread frame is _this_ frame.
402	n/a	frame = d.pop(main_id)
403	n/a	self.assertTrue(frame is sys._getframe())
404	n/a
405	n/a	# Verify that the captured thread frame is blocked in g456, called
406	n/a	# from f123. This is a litte tricky, since various bits of
407	n/a	# threading.py are also in the thread's call stack.
408	n/a	frame = d.pop(thread_id)
409	n/a	stack = traceback.extract_stack(frame)
410	n/a	for i, (filename, lineno, funcname, sourceline) in enumerate(stack):
411	n/a	if funcname == "f123":
412	n/a	break
413	n/a	else:
414	n/a	self.fail("didn't find f123() on thread's call stack")
415	n/a
416	n/a	self.assertEqual(sourceline, "g456()")
417	n/a
418	n/a	# And the next record must be for g456().
419	n/a	filename, lineno, funcname, sourceline = stack[i+1]
420	n/a	self.assertEqual(funcname, "g456")
421	n/a	self.assertIn(sourceline, ["leave_g.wait()", "entered_g.set()"])
422	n/a
423	n/a	# Reap the spawned thread.
424	n/a	leave_g.set()
425	n/a	t.join()
426	n/a
427	n/a	# Test sys._current_frames() when thread support doesn't exist.
428	n/a	def current_frames_without_threads(self):
429	n/a	# Not much happens here: there is only one thread, with artificial
430	n/a	# "thread id" 0.
431	n/a	d = sys._current_frames()
432	n/a	self.assertEqual(len(d), 1)
433	n/a	self.assertIn(0, d)
434	n/a	self.assertTrue(d[0] is sys._getframe())
435	n/a
436	n/a	def test_attributes(self):
437	n/a	self.assertIsInstance(sys.api_version, int)
438	n/a	self.assertIsInstance(sys.argv, list)
439	n/a	self.assertIn(sys.byteorder, ("little", "big"))
440	n/a	self.assertIsInstance(sys.builtin_module_names, tuple)
441	n/a	self.assertIsInstance(sys.copyright, str)
442	n/a	self.assertIsInstance(sys.exec_prefix, str)
443	n/a	self.assertIsInstance(sys.base_exec_prefix, str)
444	n/a	self.assertIsInstance(sys.executable, str)
445	n/a	self.assertEqual(len(sys.float_info), 11)
446	n/a	self.assertEqual(sys.float_info.radix, 2)
447	n/a	self.assertEqual(len(sys.int_info), 2)
448	n/a	self.assertTrue(sys.int_info.bits_per_digit % 5 == 0)
449	n/a	self.assertTrue(sys.int_info.sizeof_digit >= 1)
450	n/a	self.assertEqual(type(sys.int_info.bits_per_digit), int)
451	n/a	self.assertEqual(type(sys.int_info.sizeof_digit), int)
452	n/a	self.assertIsInstance(sys.hexversion, int)
453	n/a
454	n/a	self.assertEqual(len(sys.hash_info), 9)
455	n/a	self.assertLess(sys.hash_info.modulus, 2**sys.hash_info.width)
456	n/a	# sys.hash_info.modulus should be a prime; we do a quick
457	n/a	# probable primality test (doesn't exclude the possibility of
458	n/a	# a Carmichael number)
459	n/a	for x in range(1, 100):
460	n/a	self.assertEqual(
461	n/a	pow(x, sys.hash_info.modulus-1, sys.hash_info.modulus),
462	n/a	1,
463	n/a	"sys.hash_info.modulus {} is a non-prime".format(
464	n/a	sys.hash_info.modulus)
465	n/a	)
466	n/a	self.assertIsInstance(sys.hash_info.inf, int)
467	n/a	self.assertIsInstance(sys.hash_info.nan, int)
468	n/a	self.assertIsInstance(sys.hash_info.imag, int)
469	n/a	algo = sysconfig.get_config_var("Py_HASH_ALGORITHM")
470	n/a	if sys.hash_info.algorithm in {"fnv", "siphash24"}:
471	n/a	self.assertIn(sys.hash_info.hash_bits, {32, 64})
472	n/a	self.assertIn(sys.hash_info.seed_bits, {32, 64, 128})
473	n/a
474	n/a	if algo == 1:
475	n/a	self.assertEqual(sys.hash_info.algorithm, "siphash24")
476	n/a	elif algo == 2:
477	n/a	self.assertEqual(sys.hash_info.algorithm, "fnv")
478	n/a	else:
479	n/a	self.assertIn(sys.hash_info.algorithm, {"fnv", "siphash24"})
480	n/a	else:
481	n/a	# PY_HASH_EXTERNAL
482	n/a	self.assertEqual(algo, 0)
483	n/a	self.assertGreaterEqual(sys.hash_info.cutoff, 0)
484	n/a	self.assertLess(sys.hash_info.cutoff, 8)
485	n/a
486	n/a	self.assertIsInstance(sys.maxsize, int)
487	n/a	self.assertIsInstance(sys.maxunicode, int)
488	n/a	self.assertEqual(sys.maxunicode, 0x10FFFF)
489	n/a	self.assertIsInstance(sys.platform, str)
490	n/a	self.assertIsInstance(sys.prefix, str)
491	n/a	self.assertIsInstance(sys.base_prefix, str)
492	n/a	self.assertIsInstance(sys.version, str)
493	n/a	vi = sys.version_info
494	n/a	self.assertIsInstance(vi[:], tuple)
495	n/a	self.assertEqual(len(vi), 5)
496	n/a	self.assertIsInstance(vi[0], int)
497	n/a	self.assertIsInstance(vi[1], int)
498	n/a	self.assertIsInstance(vi[2], int)
499	n/a	self.assertIn(vi[3], ("alpha", "beta", "candidate", "final"))
500	n/a	self.assertIsInstance(vi[4], int)
501	n/a	self.assertIsInstance(vi.major, int)
502	n/a	self.assertIsInstance(vi.minor, int)
503	n/a	self.assertIsInstance(vi.micro, int)
504	n/a	self.assertIn(vi.releaselevel, ("alpha", "beta", "candidate", "final"))
505	n/a	self.assertIsInstance(vi.serial, int)
506	n/a	self.assertEqual(vi[0], vi.major)
507	n/a	self.assertEqual(vi[1], vi.minor)
508	n/a	self.assertEqual(vi[2], vi.micro)
509	n/a	self.assertEqual(vi[3], vi.releaselevel)
510	n/a	self.assertEqual(vi[4], vi.serial)
511	n/a	self.assertTrue(vi > (1,0,0))
512	n/a	self.assertIsInstance(sys.float_repr_style, str)
513	n/a	self.assertIn(sys.float_repr_style, ('short', 'legacy'))
514	n/a	if not sys.platform.startswith('win'):
515	n/a	self.assertIsInstance(sys.abiflags, str)
516	n/a
517	n/a	@unittest.skipUnless(hasattr(sys, 'thread_info'),
518	n/a	'Threading required for this test.')
519	n/a	def test_thread_info(self):
520	n/a	info = sys.thread_info
521	n/a	self.assertEqual(len(info), 3)
522	n/a	self.assertIn(info.name, ('nt', 'pthread', 'solaris', None))
523	n/a	self.assertIn(info.lock, ('semaphore', 'mutex+cond', None))
524	n/a
525	n/a	def test_43581(self):
526	n/a	# Can't use sys.stdout, as this is a StringIO object when
527	n/a	# the test runs under regrtest.
528	n/a	self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding)
529	n/a
530	n/a	def test_intern(self):
531	n/a	global numruns
532	n/a	numruns += 1
533	n/a	self.assertRaises(TypeError, sys.intern)
534	n/a	s = "never interned before" + str(numruns)
535	n/a	self.assertTrue(sys.intern(s) is s)
536	n/a	s2 = s.swapcase().swapcase()
537	n/a	self.assertTrue(sys.intern(s2) is s)
538	n/a
539	n/a	# Subclasses of string can't be interned, because they
540	n/a	# provide too much opportunity for insane things to happen.
541	n/a	# We don't want them in the interned dict and if they aren't
542	n/a	# actually interned, we don't want to create the appearance
543	n/a	# that they are by allowing intern() to succeed.
544	n/a	class S(str):
545	n/a	def __hash__(self):
546	n/a	return 123
547	n/a
548	n/a	self.assertRaises(TypeError, sys.intern, S("abc"))
549	n/a
550	n/a	def test_sys_flags(self):
551	n/a	self.assertTrue(sys.flags)
552	n/a	attrs = ("debug",
553	n/a	"inspect", "interactive", "optimize", "dont_write_bytecode",
554	n/a	"no_user_site", "no_site", "ignore_environment", "verbose",
555	n/a	"bytes_warning", "quiet", "hash_randomization", "isolated")
556	n/a	for attr in attrs:
557	n/a	self.assertTrue(hasattr(sys.flags, attr), attr)
558	n/a	self.assertEqual(type(getattr(sys.flags, attr)), int, attr)
559	n/a	self.assertTrue(repr(sys.flags))
560	n/a	self.assertEqual(len(sys.flags), len(attrs))
561	n/a
562	n/a	def assert_raise_on_new_sys_type(self, sys_attr):
563	n/a	# Users are intentionally prevented from creating new instances of
564	n/a	# sys.flags, sys.version_info, and sys.getwindowsversion.
565	n/a	attr_type = type(sys_attr)
566	n/a	with self.assertRaises(TypeError):
567	n/a	attr_type()
568	n/a	with self.assertRaises(TypeError):
569	n/a	attr_type.__new__(attr_type)
570	n/a
571	n/a	def test_sys_flags_no_instantiation(self):
572	n/a	self.assert_raise_on_new_sys_type(sys.flags)
573	n/a
574	n/a	def test_sys_version_info_no_instantiation(self):
575	n/a	self.assert_raise_on_new_sys_type(sys.version_info)
576	n/a
577	n/a	def test_sys_getwindowsversion_no_instantiation(self):
578	n/a	# Skip if not being run on Windows.
579	n/a	test.support.get_attribute(sys, "getwindowsversion")
580	n/a	self.assert_raise_on_new_sys_type(sys.getwindowsversion())
581	n/a
582	n/a	@test.support.cpython_only
583	n/a	def test_clear_type_cache(self):
584	n/a	sys._clear_type_cache()
585	n/a
586	n/a	def test_ioencoding(self):
587	n/a	env = dict(os.environ)
588	n/a
589	n/a	# Test character: cent sign, encoded as 0x4A (ASCII J) in CP424,
590	n/a	# not representable in ASCII.
591	n/a
592	n/a	env["PYTHONIOENCODING"] = "cp424"
593	n/a	p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
594	n/a	stdout = subprocess.PIPE, env=env)
595	n/a	out = p.communicate()[0].strip()
596	n/a	expected = ("\xa2" + os.linesep).encode("cp424")
597	n/a	self.assertEqual(out, expected)
598	n/a
599	n/a	env["PYTHONIOENCODING"] = "ascii:replace"
600	n/a	p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
601	n/a	stdout = subprocess.PIPE, env=env)
602	n/a	out = p.communicate()[0].strip()
603	n/a	self.assertEqual(out, b'?')
604	n/a
605	n/a	env["PYTHONIOENCODING"] = "ascii"
606	n/a	p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
607	n/a	stdout=subprocess.PIPE, stderr=subprocess.PIPE,
608	n/a	env=env)
609	n/a	out, err = p.communicate()
610	n/a	self.assertEqual(out, b'')
611	n/a	self.assertIn(b'UnicodeEncodeError:', err)
612	n/a	self.assertIn(rb"'\xa2'", err)
613	n/a
614	n/a	env["PYTHONIOENCODING"] = "ascii:"
615	n/a	p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
616	n/a	stdout=subprocess.PIPE, stderr=subprocess.PIPE,
617	n/a	env=env)
618	n/a	out, err = p.communicate()
619	n/a	self.assertEqual(out, b'')
620	n/a	self.assertIn(b'UnicodeEncodeError:', err)
621	n/a	self.assertIn(rb"'\xa2'", err)
622	n/a
623	n/a	env["PYTHONIOENCODING"] = ":surrogateescape"
624	n/a	p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xdcbd))'],
625	n/a	stdout=subprocess.PIPE, env=env)
626	n/a	out = p.communicate()[0].strip()
627	n/a	self.assertEqual(out, b'\xbd')
628	n/a
629	n/a	@unittest.skipUnless(test.support.FS_NONASCII,
630	n/a	'requires OS support of non-ASCII encodings')
631	n/a	@unittest.skipUnless(sys.getfilesystemencoding() == locale.getpreferredencoding(False),
632	n/a	'requires FS encoding to match locale')
633	n/a	def test_ioencoding_nonascii(self):
634	n/a	env = dict(os.environ)
635	n/a
636	n/a	env["PYTHONIOENCODING"] = ""
637	n/a	p = subprocess.Popen([sys.executable, "-c",
638	n/a	'print(%a)' % test.support.FS_NONASCII],
639	n/a	stdout=subprocess.PIPE, env=env)
640	n/a	out = p.communicate()[0].strip()
641	n/a	self.assertEqual(out, os.fsencode(test.support.FS_NONASCII))
642	n/a
643	n/a	@unittest.skipIf(sys.base_prefix != sys.prefix,
644	n/a	'Test is not venv-compatible')
645	n/a	def test_executable(self):
646	n/a	# sys.executable should be absolute
647	n/a	self.assertEqual(os.path.abspath(sys.executable), sys.executable)
648	n/a
649	n/a	# Issue #7774: Ensure that sys.executable is an empty string if argv[0]
650	n/a	# has been set to a non existent program name and Python is unable to
651	n/a	# retrieve the real program name
652	n/a
653	n/a	# For a normal installation, it should work without 'cwd'
654	n/a	# argument. For test runs in the build directory, see #7774.
655	n/a	python_dir = os.path.dirname(os.path.realpath(sys.executable))
656	n/a	p = subprocess.Popen(
657	n/a	["nonexistent", "-c",
658	n/a	'import sys; print(sys.executable.encode("ascii", "backslashreplace"))'],
659	n/a	executable=sys.executable, stdout=subprocess.PIPE, cwd=python_dir)
660	n/a	stdout = p.communicate()[0]
661	n/a	executable = stdout.strip().decode("ASCII")
662	n/a	p.wait()
663	n/a	self.assertIn(executable, ["b''", repr(sys.executable.encode("ascii", "backslashreplace"))])
664	n/a
665	n/a	def check_fsencoding(self, fs_encoding, expected=None):
666	n/a	self.assertIsNotNone(fs_encoding)
667	n/a	codecs.lookup(fs_encoding)
668	n/a	if expected:
669	n/a	self.assertEqual(fs_encoding, expected)
670	n/a
671	n/a	def test_getfilesystemencoding(self):
672	n/a	fs_encoding = sys.getfilesystemencoding()
673	n/a	if sys.platform == 'darwin':
674	n/a	expected = 'utf-8'
675	n/a	else:
676	n/a	expected = None
677	n/a	self.check_fsencoding(fs_encoding, expected)
678	n/a
679	n/a	def c_locale_get_error_handler(self, isolated=False, encoding=None):
680	n/a	# Force the POSIX locale
681	n/a	env = os.environ.copy()
682	n/a	env["LC_ALL"] = "C"
683	n/a	code = '\n'.join((
684	n/a	'import sys',
685	n/a	'def dump(name):',
686	n/a	' std = getattr(sys, name)',
687	n/a	' print("%s: %s" % (name, std.errors))',
688	n/a	'dump("stdin")',
689	n/a	'dump("stdout")',
690	n/a	'dump("stderr")',
691	n/a	))
692	n/a	args = [sys.executable, "-c", code]
693	n/a	if isolated:
694	n/a	args.append("-I")
695	n/a	if encoding is not None:
696	n/a	env['PYTHONIOENCODING'] = encoding
697	n/a	else:
698	n/a	env.pop('PYTHONIOENCODING', None)
699	n/a	p = subprocess.Popen(args,
700	n/a	stdout=subprocess.PIPE,
701	n/a	stderr=subprocess.STDOUT,
702	n/a	env=env,
703	n/a	universal_newlines=True)
704	n/a	stdout, stderr = p.communicate()
705	n/a	return stdout
706	n/a
707	n/a	def test_c_locale_surrogateescape(self):
708	n/a	out = self.c_locale_get_error_handler(isolated=True)
709	n/a	self.assertEqual(out,
710	n/a	'stdin: surrogateescape\n'
711	n/a	'stdout: surrogateescape\n'
712	n/a	'stderr: backslashreplace\n')
713	n/a
714	n/a	# replace the default error handler
715	n/a	out = self.c_locale_get_error_handler(encoding=':ignore')
716	n/a	self.assertEqual(out,
717	n/a	'stdin: ignore\n'
718	n/a	'stdout: ignore\n'
719	n/a	'stderr: backslashreplace\n')
720	n/a
721	n/a	# force the encoding
722	n/a	out = self.c_locale_get_error_handler(encoding='iso8859-1')
723	n/a	self.assertEqual(out,
724	n/a	'stdin: strict\n'
725	n/a	'stdout: strict\n'
726	n/a	'stderr: backslashreplace\n')
727	n/a	out = self.c_locale_get_error_handler(encoding='iso8859-1:')
728	n/a	self.assertEqual(out,
729	n/a	'stdin: strict\n'
730	n/a	'stdout: strict\n'
731	n/a	'stderr: backslashreplace\n')
732	n/a
733	n/a	# have no any effect
734	n/a	out = self.c_locale_get_error_handler(encoding=':')
735	n/a	self.assertEqual(out,
736	n/a	'stdin: surrogateescape\n'
737	n/a	'stdout: surrogateescape\n'
738	n/a	'stderr: backslashreplace\n')
739	n/a	out = self.c_locale_get_error_handler(encoding='')
740	n/a	self.assertEqual(out,
741	n/a	'stdin: surrogateescape\n'
742	n/a	'stdout: surrogateescape\n'
743	n/a	'stderr: backslashreplace\n')
744	n/a
745	n/a	def test_implementation(self):
746	n/a	# This test applies to all implementations equally.
747	n/a
748	n/a	levels = {'alpha': 0xA, 'beta': 0xB, 'candidate': 0xC, 'final': 0xF}
749	n/a
750	n/a	self.assertTrue(hasattr(sys.implementation, 'name'))
751	n/a	self.assertTrue(hasattr(sys.implementation, 'version'))
752	n/a	self.assertTrue(hasattr(sys.implementation, 'hexversion'))
753	n/a	self.assertTrue(hasattr(sys.implementation, 'cache_tag'))
754	n/a
755	n/a	version = sys.implementation.version
756	n/a	self.assertEqual(version[:2], (version.major, version.minor))
757	n/a
758	n/a	hexversion = (version.major << 24 \| version.minor << 16 \|
759	n/a	version.micro << 8 \| levels[version.releaselevel] << 4 \|
760	n/a	version.serial << 0)
761	n/a	self.assertEqual(sys.implementation.hexversion, hexversion)
762	n/a
763	n/a	# PEP 421 requires that .name be lower case.
764	n/a	self.assertEqual(sys.implementation.name,
765	n/a	sys.implementation.name.lower())
766	n/a
767	n/a	@test.support.cpython_only
768	n/a	def test_debugmallocstats(self):
769	n/a	# Test sys._debugmallocstats()
770	n/a	from test.support.script_helper import assert_python_ok
771	n/a	args = ['-c', 'import sys; sys._debugmallocstats()']
772	n/a	ret, out, err = assert_python_ok(*args)
773	n/a	self.assertIn(b"free PyDictObjects", err)
774	n/a
775	n/a	# The function has no parameter
776	n/a	self.assertRaises(TypeError, sys._debugmallocstats, True)
777	n/a
778	n/a	@unittest.skipUnless(hasattr(sys, "getallocatedblocks"),
779	n/a	"sys.getallocatedblocks unavailable on this build")
780	n/a	def test_getallocatedblocks(self):
781	n/a	# Some sanity checks
782	n/a	with_pymalloc = sysconfig.get_config_var('WITH_PYMALLOC')
783	n/a	a = sys.getallocatedblocks()
784	n/a	self.assertIs(type(a), int)
785	n/a	if with_pymalloc:
786	n/a	self.assertGreater(a, 0)
787	n/a	else:
788	n/a	# When WITH_PYMALLOC isn't available, we don't know anything
789	n/a	# about the underlying implementation: the function might
790	n/a	# return 0 or something greater.
791	n/a	self.assertGreaterEqual(a, 0)
792	n/a	try:
793	n/a	# While we could imagine a Python session where the number of
794	n/a	# multiple buffer objects would exceed the sharing of references,
795	n/a	# it is unlikely to happen in a normal test run.
796	n/a	self.assertLess(a, sys.gettotalrefcount())
797	n/a	except AttributeError:
798	n/a	# gettotalrefcount() not available
799	n/a	pass
800	n/a	gc.collect()
801	n/a	b = sys.getallocatedblocks()
802	n/a	self.assertLessEqual(b, a)
803	n/a	gc.collect()
804	n/a	c = sys.getallocatedblocks()
805	n/a	self.assertIn(c, range(b - 50, b + 50))
806	n/a
807	n/a	@test.support.requires_type_collecting
808	n/a	def test_is_finalizing(self):
809	n/a	self.assertIs(sys.is_finalizing(), False)
810	n/a	# Don't use the atexit module because _Py_Finalizing is only set
811	n/a	# after calling atexit callbacks
812	n/a	code = """if 1:
813	n/a	import sys
814	n/a
815	n/a	class AtExit:
816	n/a	is_finalizing = sys.is_finalizing
817	n/a	print = print
818	n/a
819	n/a	def __del__(self):
820	n/a	self.print(self.is_finalizing(), flush=True)
821	n/a
822	n/a	# Keep a reference in the __main__ module namespace, so the
823	n/a	# AtExit destructor will be called at Python exit
824	n/a	ref = AtExit()
825	n/a	"""
826	n/a	rc, stdout, stderr = assert_python_ok('-c', code)
827	n/a	self.assertEqual(stdout.rstrip(), b'True')
828	n/a
829	n/a	@unittest.skipUnless(hasattr(sys, 'getandroidapilevel'),
830	n/a	'need sys.getandroidapilevel()')
831	n/a	def test_getandroidapilevel(self):
832	n/a	level = sys.getandroidapilevel()
833	n/a	self.assertIsInstance(level, int)
834	n/a	self.assertGreater(level, 0)
835	n/a
836	n/a
837	n/a	@test.support.cpython_only
838	n/a	class SizeofTest(unittest.TestCase):
839	n/a
840	n/a	def setUp(self):
841	n/a	self.P = struct.calcsize('P')
842	n/a	self.longdigit = sys.int_info.sizeof_digit
843	n/a	import _testcapi
844	n/a	self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD
845	n/a
846	n/a	check_sizeof = test.support.check_sizeof
847	n/a
848	n/a	def test_gc_head_size(self):
849	n/a	# Check that the gc header size is added to objects tracked by the gc.
850	n/a	vsize = test.support.calcvobjsize
851	n/a	gc_header_size = self.gc_headsize
852	n/a	# bool objects are not gc tracked
853	n/a	self.assertEqual(sys.getsizeof(True), vsize('') + self.longdigit)
854	n/a	# but lists are
855	n/a	self.assertEqual(sys.getsizeof([]), vsize('Pn') + gc_header_size)
856	n/a
857	n/a	def test_errors(self):
858	n/a	class BadSizeof:
859	n/a	def __sizeof__(self):
860	n/a	raise ValueError
861	n/a	self.assertRaises(ValueError, sys.getsizeof, BadSizeof())
862	n/a
863	n/a	class InvalidSizeof:
864	n/a	def __sizeof__(self):
865	n/a	return None
866	n/a	self.assertRaises(TypeError, sys.getsizeof, InvalidSizeof())
867	n/a	sentinel = ["sentinel"]
868	n/a	self.assertIs(sys.getsizeof(InvalidSizeof(), sentinel), sentinel)
869	n/a
870	n/a	class FloatSizeof:
871	n/a	def __sizeof__(self):
872	n/a	return 4.5
873	n/a	self.assertRaises(TypeError, sys.getsizeof, FloatSizeof())
874	n/a	self.assertIs(sys.getsizeof(FloatSizeof(), sentinel), sentinel)
875	n/a
876	n/a	class OverflowSizeof(int):
877	n/a	def __sizeof__(self):
878	n/a	return int(self)
879	n/a	self.assertEqual(sys.getsizeof(OverflowSizeof(sys.maxsize)),
880	n/a	sys.maxsize + self.gc_headsize)
881	n/a	with self.assertRaises(OverflowError):
882	n/a	sys.getsizeof(OverflowSizeof(sys.maxsize + 1))
883	n/a	with self.assertRaises(ValueError):
884	n/a	sys.getsizeof(OverflowSizeof(-1))
885	n/a	with self.assertRaises((ValueError, OverflowError)):
886	n/a	sys.getsizeof(OverflowSizeof(-sys.maxsize - 1))
887	n/a
888	n/a	def test_default(self):
889	n/a	size = test.support.calcvobjsize
890	n/a	self.assertEqual(sys.getsizeof(True), size('') + self.longdigit)
891	n/a	self.assertEqual(sys.getsizeof(True, -1), size('') + self.longdigit)
892	n/a
893	n/a	def test_objecttypes(self):
894	n/a	# check all types defined in Objects/
895	n/a	calcsize = struct.calcsize
896	n/a	size = test.support.calcobjsize
897	n/a	vsize = test.support.calcvobjsize
898	n/a	check = self.check_sizeof
899	n/a	# bool
900	n/a	check(True, vsize('') + self.longdigit)
901	n/a	# buffer
902	n/a	# XXX
903	n/a	# builtin_function_or_method
904	n/a	check(len, size('4P')) # XXX check layout
905	n/a	# bytearray
906	n/a	samples = [b'', b'u'*100000]
907	n/a	for sample in samples:
908	n/a	x = bytearray(sample)
909	n/a	check(x, vsize('n2Pi') + x.__alloc__())
910	n/a	# bytearray_iterator
911	n/a	check(iter(bytearray()), size('nP'))
912	n/a	# bytes
913	n/a	check(b'', vsize('n') + 1)
914	n/a	check(b'x' * 10, vsize('n') + 11)
915	n/a	# cell
916	n/a	def get_cell():
917	n/a	x = 42
918	n/a	def inner():
919	n/a	return x
920	n/a	return inner
921	n/a	check(get_cell().__closure__[0], size('P'))
922	n/a	# code
923	n/a	check(get_cell().__code__, size('6i13P'))
924	n/a	check(get_cell.__code__, size('6i13P'))
925	n/a	def get_cell2(x):
926	n/a	def inner():
927	n/a	return x
928	n/a	return inner
929	n/a	check(get_cell2.__code__, size('6i13P') + calcsize('n'))
930	n/a	# complex
931	n/a	check(complex(0,1), size('2d'))
932	n/a	# method_descriptor (descriptor object)
933	n/a	check(str.lower, size('3PP'))
934	n/a	# classmethod_descriptor (descriptor object)
935	n/a	# XXX
936	n/a	# member_descriptor (descriptor object)
937	n/a	import datetime
938	n/a	check(datetime.timedelta.days, size('3PP'))
939	n/a	# getset_descriptor (descriptor object)
940	n/a	import collections
941	n/a	check(collections.defaultdict.default_factory, size('3PP'))
942	n/a	# wrapper_descriptor (descriptor object)
943	n/a	check(int.__add__, size('3P2P'))
944	n/a	# method-wrapper (descriptor object)
945	n/a	check({}.__iter__, size('2P'))
946	n/a	# dict
947	n/a	check({}, size('nQ2P') + calcsize('2nP2n') + 8 + (82//3)calcsize('n2P'))
948	n/a	longdict = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8}
949	n/a	check(longdict, size('nQ2P') + calcsize('2nP2n') + 16 + (162//3)calcsize('n2P'))
950	n/a	# dictionary-keyview
951	n/a	check({}.keys(), size('P'))
952	n/a	# dictionary-valueview
953	n/a	check({}.values(), size('P'))
954	n/a	# dictionary-itemview
955	n/a	check({}.items(), size('P'))
956	n/a	# dictionary iterator
957	n/a	check(iter({}), size('P2nPn'))
958	n/a	# dictionary-keyiterator
959	n/a	check(iter({}.keys()), size('P2nPn'))
960	n/a	# dictionary-valueiterator
961	n/a	check(iter({}.values()), size('P2nPn'))
962	n/a	# dictionary-itemiterator
963	n/a	check(iter({}.items()), size('P2nPn'))
964	n/a	# dictproxy
965	n/a	class C(object): pass
966	n/a	check(C.__dict__, size('P'))
967	n/a	# BaseException
968	n/a	check(BaseException(), size('5Pb'))
969	n/a	# UnicodeEncodeError
970	n/a	check(UnicodeEncodeError("", "", 0, 0, ""), size('5Pb 2P2nP'))
971	n/a	# UnicodeDecodeError
972	n/a	check(UnicodeDecodeError("", b"", 0, 0, ""), size('5Pb 2P2nP'))
973	n/a	# UnicodeTranslateError
974	n/a	check(UnicodeTranslateError("", 0, 1, ""), size('5Pb 2P2nP'))
975	n/a	# ellipses
976	n/a	check(Ellipsis, size(''))
977	n/a	# EncodingMap
978	n/a	import codecs, encodings.iso8859_3
979	n/a	x = codecs.charmap_build(encodings.iso8859_3.decoding_table)
980	n/a	check(x, size('32B2iB'))
981	n/a	# enumerate
982	n/a	check(enumerate([]), size('n3P'))
983	n/a	# reverse
984	n/a	check(reversed(''), size('nP'))
985	n/a	# float
986	n/a	check(float(0), size('d'))
987	n/a	# sys.floatinfo
988	n/a	check(sys.float_info, vsize('') + self.P * len(sys.float_info))
989	n/a	# frame
990	n/a	import inspect
991	n/a	CO_MAXBLOCKS = 20
992	n/a	x = inspect.currentframe()
993	n/a	ncells = len(x.f_code.co_cellvars)
994	n/a	nfrees = len(x.f_code.co_freevars)
995	n/a	extras = x.f_code.co_stacksize + x.f_code.co_nlocals +\
996	n/a	ncells + nfrees - 1
997	n/a	check(x, vsize('12P3ic' + CO_MAXBLOCKS'3i' + 'P' + extras'P'))
998	n/a	# function
999	n/a	def func(): pass
1000	n/a	check(func, size('12P'))
1001	n/a	class c():
1002	n/a	@staticmethod
1003	n/a	def foo():
1004	n/a	pass
1005	n/a	@classmethod
1006	n/a	def bar(cls):
1007	n/a	pass
1008	n/a	# staticmethod
1009	n/a	check(foo, size('PP'))
1010	n/a	# classmethod
1011	n/a	check(bar, size('PP'))
1012	n/a	# generator
1013	n/a	def get_gen(): yield 1
1014	n/a	check(get_gen(), size('Pb2PPP'))
1015	n/a	# iterator
1016	n/a	check(iter('abc'), size('lP'))
1017	n/a	# callable-iterator
1018	n/a	import re
1019	n/a	check(re.finditer('',''), size('2P'))
1020	n/a	# list
1021	n/a	samples = [[], [1,2,3], ['1', '2', '3']]
1022	n/a	for sample in samples:
1023	n/a	check(sample, vsize('Pn') + len(sample)*self.P)
1024	n/a	# sortwrapper (list)
1025	n/a	# XXX
1026	n/a	# cmpwrapper (list)
1027	n/a	# XXX
1028	n/a	# listiterator (list)
1029	n/a	check(iter([]), size('lP'))
1030	n/a	# listreverseiterator (list)
1031	n/a	check(reversed([]), size('nP'))
1032	n/a	# int
1033	n/a	check(0, vsize(''))
1034	n/a	check(1, vsize('') + self.longdigit)
1035	n/a	check(-1, vsize('') + self.longdigit)
1036	n/a	PyLong_BASE = 2**sys.int_info.bits_per_digit
1037	n/a	check(int(PyLong_BASE), vsize('') + 2*self.longdigit)
1038	n/a	check(int(PyLong_BASE*2-1), vsize('') + 2self.longdigit)
1039	n/a	check(int(PyLong_BASE*2), vsize('') + 3self.longdigit)
1040	n/a	# module
1041	n/a	check(unittest, size('PnPPP'))
1042	n/a	# None
1043	n/a	check(None, size(''))
1044	n/a	# NotImplementedType
1045	n/a	check(NotImplemented, size(''))
1046	n/a	# object
1047	n/a	check(object(), size(''))
1048	n/a	# property (descriptor object)
1049	n/a	class C(object):
1050	n/a	def getx(self): return self.__x
1051	n/a	def setx(self, value): self.__x = value
1052	n/a	def delx(self): del self.__x
1053	n/a	x = property(getx, setx, delx, "")
1054	n/a	check(x, size('4Pi'))
1055	n/a	# PyCapsule
1056	n/a	# XXX
1057	n/a	# rangeiterator
1058	n/a	check(iter(range(1)), size('4l'))
1059	n/a	# reverse
1060	n/a	check(reversed(''), size('nP'))
1061	n/a	# range
1062	n/a	check(range(1), size('4P'))
1063	n/a	check(range(66000), size('4P'))
1064	n/a	# set
1065	n/a	# frozenset
1066	n/a	PySet_MINSIZE = 8
1067	n/a	samples = [[], range(10), range(50)]
1068	n/a	s = size('3nP' + PySet_MINSIZE*'nP' + '2nP')
1069	n/a	for sample in samples:
1070	n/a	minused = len(sample)
1071	n/a	if minused == 0: tmp = 1
1072	n/a	# the computation of minused is actually a bit more complicated
1073	n/a	# but this suffices for the sizeof test
1074	n/a	minused = minused*2
1075	n/a	newsize = PySet_MINSIZE
1076	n/a	while newsize <= minused:
1077	n/a	newsize = newsize << 1
1078	n/a	if newsize <= 8:
1079	n/a	check(set(sample), s)
1080	n/a	check(frozenset(sample), s)
1081	n/a	else:
1082	n/a	check(set(sample), s + newsize*calcsize('nP'))
1083	n/a	check(frozenset(sample), s + newsize*calcsize('nP'))
1084	n/a	# setiterator
1085	n/a	check(iter(set()), size('P3n'))
1086	n/a	# slice
1087	n/a	check(slice(0), size('3P'))
1088	n/a	# super
1089	n/a	check(super(int), size('3P'))
1090	n/a	# tuple
1091	n/a	check((), vsize(''))
1092	n/a	check((1,2,3), vsize('') + 3*self.P)
1093	n/a	# type
1094	n/a	# static type: PyTypeObject
1095	n/a	fmt = 'P2n15Pl4Pn9Pn11PIP'
1096	n/a	if hasattr(sys, 'getcounts'):
1097	n/a	fmt += '3n2P'
1098	n/a	s = vsize(fmt)
1099	n/a	check(int, s)
1100	n/a	s = vsize(fmt + # PyTypeObject
1101	n/a	'3P' # PyAsyncMethods
1102	n/a	'36P' # PyNumberMethods
1103	n/a	'3P' # PyMappingMethods
1104	n/a	'10P' # PySequenceMethods
1105	n/a	'2P' # PyBufferProcs
1106	n/a	'4P')
1107	n/a	# Separate block for PyDictKeysObject with 8 keys and 5 entries
1108	n/a	s += calcsize("2nP2n") + 8 + 5*calcsize("n2P")
1109	n/a	# class
1110	n/a	class newstyleclass(object): pass
1111	n/a	check(newstyleclass, s)
1112	n/a	# dict with shared keys
1113	n/a	check(newstyleclass().__dict__, size('nQ2P' + '2nP2n'))
1114	n/a	# unicode
1115	n/a	# each tuple contains a string and its expected character size
1116	n/a	# don't put any static strings here, as they may contain
1117	n/a	# wchar_t or UTF-8 representations
1118	n/a	samples = ['1'100, '\xff'50,
1119	n/a	'\u0100'40, '\uffff'100,
1120	n/a	'\U00010000'30, '\U0010ffff'100]
1121	n/a	asciifields = "nnbP"
1122	n/a	compactfields = asciifields + "nPn"
1123	n/a	unicodefields = compactfields + "P"
1124	n/a	for s in samples:
1125	n/a	maxchar = ord(max(s))
1126	n/a	if maxchar < 128:
1127	n/a	L = size(asciifields) + len(s) + 1
1128	n/a	elif maxchar < 256:
1129	n/a	L = size(compactfields) + len(s) + 1
1130	n/a	elif maxchar < 65536:
1131	n/a	L = size(compactfields) + 2*(len(s) + 1)
1132	n/a	else:
1133	n/a	L = size(compactfields) + 4*(len(s) + 1)
1134	n/a	check(s, L)
1135	n/a	# verify that the UTF-8 size is accounted for
1136	n/a	s = chr(0x4000) # 4 bytes canonical representation
1137	n/a	check(s, size(compactfields) + 4)
1138	n/a	# compile() will trigger the generation of the UTF-8
1139	n/a	# representation as a side effect
1140	n/a	compile(s, "<stdin>", "eval")
1141	n/a	check(s, size(compactfields) + 4 + 4)
1142	n/a	# TODO: add check that forces the presence of wchar_t representation
1143	n/a	# TODO: add check that forces layout of unicodefields
1144	n/a	# weakref
1145	n/a	import weakref
1146	n/a	check(weakref.ref(int), size('2Pn2P'))
1147	n/a	# weakproxy
1148	n/a	# XXX
1149	n/a	# weakcallableproxy
1150	n/a	check(weakref.proxy(int), size('2Pn2P'))
1151	n/a
1152	n/a	def check_slots(self, obj, base, extra):
1153	n/a	expected = sys.getsizeof(base) + struct.calcsize(extra)
1154	n/a	if gc.is_tracked(obj) and not gc.is_tracked(base):
1155	n/a	expected += self.gc_headsize
1156	n/a	self.assertEqual(sys.getsizeof(obj), expected)
1157	n/a
1158	n/a	def test_slots(self):
1159	n/a	# check all subclassable types defined in Objects/ that allow
1160	n/a	# non-empty __slots__
1161	n/a	check = self.check_slots
1162	n/a	class BA(bytearray):
1163	n/a	__slots__ = 'a', 'b', 'c'
1164	n/a	check(BA(), bytearray(), '3P')
1165	n/a	class D(dict):
1166	n/a	__slots__ = 'a', 'b', 'c'
1167	n/a	check(D(x=[]), {'x': []}, '3P')
1168	n/a	class L(list):
1169	n/a	__slots__ = 'a', 'b', 'c'
1170	n/a	check(L(), [], '3P')
1171	n/a	class S(set):
1172	n/a	__slots__ = 'a', 'b', 'c'
1173	n/a	check(S(), set(), '3P')
1174	n/a	class FS(frozenset):
1175	n/a	__slots__ = 'a', 'b', 'c'
1176	n/a	check(FS(), frozenset(), '3P')
1177	n/a	from collections import OrderedDict
1178	n/a	class OD(OrderedDict):
1179	n/a	__slots__ = 'a', 'b', 'c'
1180	n/a	check(OD(x=[]), OrderedDict(x=[]), '3P')
1181	n/a
1182	n/a	def test_pythontypes(self):
1183	n/a	# check all types defined in Python/
1184	n/a	size = test.support.calcobjsize
1185	n/a	vsize = test.support.calcvobjsize
1186	n/a	check = self.check_sizeof
1187	n/a	# _ast.AST
1188	n/a	import _ast
1189	n/a	check(_ast.AST(), size('P'))
1190	n/a	try:
1191	n/a	raise TypeError
1192	n/a	except TypeError:
1193	n/a	tb = sys.exc_info()[2]
1194	n/a	# traceback
1195	n/a	if tb is not None:
1196	n/a	check(tb, size('2P2i'))
1197	n/a	# symtable entry
1198	n/a	# XXX
1199	n/a	# sys.flags
1200	n/a	check(sys.flags, vsize('') + self.P * len(sys.flags))
1201	n/a
1202	n/a	def test_asyncgen_hooks(self):
1203	n/a	old = sys.get_asyncgen_hooks()
1204	n/a	self.assertIsNone(old.firstiter)
1205	n/a	self.assertIsNone(old.finalizer)
1206	n/a
1207	n/a	firstiter = lambda *a: None
1208	n/a	sys.set_asyncgen_hooks(firstiter=firstiter)
1209	n/a	hooks = sys.get_asyncgen_hooks()
1210	n/a	self.assertIs(hooks.firstiter, firstiter)
1211	n/a	self.assertIs(hooks[0], firstiter)
1212	n/a	self.assertIs(hooks.finalizer, None)
1213	n/a	self.assertIs(hooks[1], None)
1214	n/a
1215	n/a	finalizer = lambda *a: None
1216	n/a	sys.set_asyncgen_hooks(finalizer=finalizer)
1217	n/a	hooks = sys.get_asyncgen_hooks()
1218	n/a	self.assertIs(hooks.firstiter, firstiter)
1219	n/a	self.assertIs(hooks[0], firstiter)
1220	n/a	self.assertIs(hooks.finalizer, finalizer)
1221	n/a	self.assertIs(hooks[1], finalizer)
1222	n/a
1223	n/a	sys.set_asyncgen_hooks(*old)
1224	n/a	cur = sys.get_asyncgen_hooks()
1225	n/a	self.assertIsNone(cur.firstiter)
1226	n/a	self.assertIsNone(cur.finalizer)
1227	n/a
1228	n/a
1229	n/a	def test_main():
1230	n/a	test.support.run_unittest(SysModuleTest, SizeofTest)
1231	n/a
1232	n/a	if __name__ == "__main__":
1233	n/a	test_main()