mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 00:48:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

Issue #13204: Calling sys.flags.__new__ would crash the interpreter, now it raises a TypeError.

Browse source
This commit is contained in:
Antoine Pitrou 2014-04-28 13:07:06 +02:00
parent 94ba146d11
commit 871dfc41d3
3 changed files with 33 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

20
Lib/test/test_sys.py
View file

@ -519,6 +519,26 @@ class SysModuleTest(unittest.TestCase):
self.assertTrue(repr(sys.flags))
self.assertEqual(len(sys.flags), len(attrs))
def assert_raise_on_new_sys_type(self, sys_attr):
# Users are intentionally prevented from creating new instances of
# sys.flags, sys.version_info, and sys.getwindowsversion.
attr_type = type(sys_attr)
with self.assertRaises(TypeError):
attr_type()
with self.assertRaises(TypeError):
attr_type.__new__(attr_type)
def test_sys_flags_no_instantiation(self):
self.assert_raise_on_new_sys_type(sys.flags)
def test_sys_version_info_no_instantiation(self):
self.assert_raise_on_new_sys_type(sys.version_info)
def test_sys_getwindowsversion_no_instantiation(self):
# Skip if not being run on Windows.
test.support.get_attribute(sys, "getwindowsversion")
self.assert_raise_on_new_sys_type(sys.getwindowsversion())
def test_clear_type_cache(self):
sys._clear_type_cache()