mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-09-26 10:19:53 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

Closes #15676: mmap: add empty file check prior to offset check

Browse source
This commit is contained in:
Jesus Cea 2012-09-10 00:22:39 +02:00
parent 10fc104fed
commit 8b54d6d733
3 changed files with 24 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

16
Lib/test/test_mmap.py
View file

@ -466,6 +466,22 @@ class MmapTests(unittest.TestCase):
f.flush ()
return mmap.mmap (f.fileno(), 0)
def test_empty_file (self):
f = open (TESTFN, 'w+b')
f.close()
f = open(TESTFN, "rb")
try:
m = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
m.close()
f.close()
self.fail("should not have been able to mmap empty file")
except ValueError as e:
f.close()
self.assertEqual(e.message, "cannot mmap an empty file")
except:
f.close()
self.fail("unexpected exception: " + str(e))
def test_offset (self):
f = open (TESTFN, 'w+b')