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authorJesus Cea <jcea@jcea.es>2012-09-09 23:23:05 (GMT)
committerJesus Cea <jcea@jcea.es>2012-09-09 23:23:05 (GMT)
commit1b3f3b03164fb4b273dd710899adf11b47480231 (patch)
treefccfe0ceaa332424a2c6756481584abd31bf72c1 /Lib/test/test_mmap.py
parentb21d48dabf40b5adc64c8968322c5974b6f4e572 (diff)
parent941bfcc537a25077e2a73ddf8d8b3bfe288c81f4 (diff)
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Closes #15676: mmap: add empty file check prior to offset check
Diffstat (limited to 'Lib/test/test_mmap.py')
-rw-r--r--Lib/test/test_mmap.py9
1 files changed, 9 insertions, 0 deletions
diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py
index 2230028..404f1e8 100644
--- a/Lib/test/test_mmap.py
+++ b/Lib/test/test_mmap.py
@@ -488,6 +488,15 @@ 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")
+ self.assertRaisesRegex(ValueError,
+ "cannot mmap an empty file",
+ mmap.mmap, f.fileno(), 0, access=mmap.ACCESS_READ)
+ f.close()
+
def test_offset (self):
f = open (TESTFN, 'w+b')