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Backport of fix for issue 6542: make sure 

test_os.TestInvalidFD.test_closerange does not close any
valid file descriptors.
This commit is contained in:
R. David Murray 2009-07-22 17:22:58 +00:00
parent d38d344370
commit 46ca2f25eb
1 changed files with 12 additions and 1 deletions
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13
Lib/test/test_os.py
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@ -563,7 +563,18 @@ class TestInvalidFD(unittest.TestCase):
def test_closerange(self): def test_closerange(self):
if hasattr(os, "closerange"): if hasattr(os, "closerange"):
fd = test_support.make_bad_fd() fd = test_support.make_bad_fd()
self.assertEqual(os.closerange(fd, fd + 10), None) # Make sure none of the descriptors we are about to close are
# currently valid (issue 6542).
for i in range(10):
try: os.fstat(fd+i)
except OSError:
pass
else:
break
if i < 2:
raise unittest.SkipTest(
"Unable to acquire a range of invalid file descriptors")
self.assertEqual(os.closerange(fd, fd + i-1), None)
def test_dup2(self): def test_dup2(self):
if hasattr(os, "dup2"): if hasattr(os, "dup2"):