python (3.12.0)
1 import sys
2 import types
3
4 # Note: This test file can't import `unittest` since the runtime can't
5 # currently guarantee that it will not leak memory. Doing so will mark
6 # the test as passing but with reference leaks. This can safely import
7 # the `unittest` library once there's a strict guarantee of no leaks
8 # during runtime shutdown.
9
10 # bpo-46417: Test that structseq types used by the sys module are still
11 # valid when Py_Finalize()/Py_Initialize() are called multiple times.
12 class ESC[4;38;5;81mTestStructSeq:
13 # test PyTypeObject members
14 def _check_structseq(self, obj_type):
15 # ob_refcnt
16 assert sys.getrefcount(obj_type) > 1
17 # tp_base
18 assert issubclass(obj_type, tuple)
19 # tp_bases
20 assert obj_type.__bases__ == (tuple,)
21 # tp_dict
22 assert isinstance(obj_type.__dict__, types.MappingProxyType)
23 # tp_mro
24 assert obj_type.__mro__ == (obj_type, tuple, object)
25 # tp_name
26 assert isinstance(type.__name__, str)
27 # tp_subclasses
28 assert obj_type.__subclasses__() == []
29
30 def test_sys_attrs(self):
31 for attr_name in (
32 'flags', # FlagsType
33 'float_info', # FloatInfoType
34 'hash_info', # Hash_InfoType
35 'int_info', # Int_InfoType
36 'thread_info', # ThreadInfoType
37 'version_info', # VersionInfoType
38 ):
39 attr = getattr(sys, attr_name)
40 self._check_structseq(type(attr))
41
42 def test_sys_funcs(self):
43 func_names = ['get_asyncgen_hooks'] # AsyncGenHooksType
44 if hasattr(sys, 'getwindowsversion'):
45 func_names.append('getwindowsversion') # WindowsVersionType
46 for func_name in func_names:
47 func = getattr(sys, func_name)
48 obj = func()
49 self._check_structseq(type(obj))
50
51
52 try:
53 tests = TestStructSeq()
54 tests.test_sys_attrs()
55 tests.test_sys_funcs()
56 except SystemExit as exc:
57 if exc.args[0] != 0:
58 raise
59 print("Tests passed")
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