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Issue #11277: Fix tests - crash will not trigger if the file is closed and reopened.

This commit is contained in:
Nadeem Vawda 2011-05-07 14:14:53 +02:00
parent ced1056925
commit 909f6d2fba
1 changed files with 12 additions and 14 deletions
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14
Lib/test/test_mmap.py
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@ -654,21 +654,21 @@ class LargeMmapTests(unittest.TestCase):
def tearDown(self):
unlink(TESTFN)
def _create_test_file(self, num_zeroes, tail):
def _make_test_file(self, num_zeroes, tail):
if sys.platform[:3] == 'win' or sys.platform == 'darwin':
requires('largefile',
'test requires %s bytes and a long time to run' % str(0x180000000))
with open(TESTFN, 'wb') as f:
f = open(TESTFN, 'w+b')
try:
f.seek(num_zeroes)
f.write(tail)
f.flush()
except (IOError, OverflowError):
raise unittest.SkipTest("filesystem does not have largefile support")
return f
def test_large_offset(self):
self._create_test_file(0x14FFFFFFF, b" ")
with open(TESTFN, 'rb') as f:
with self._make_test_file(0x14FFFFFFF, b" ") as f:
m = mmap.mmap(f.fileno(), 0, offset=0x140000000, access=mmap.ACCESS_READ)
try:
self.assertEqual(m[0xFFFFFFF], 32)
@ -676,8 +676,7 @@ class LargeMmapTests(unittest.TestCase):
m.close()
def test_large_filesize(self):
self._create_test_file(0x17FFFFFFF, b" ")
with open(TESTFN, 'rb') as f:
with self._make_test_file(0x17FFFFFFF, b" ") as f:
m = mmap.mmap(f.fileno(), 0x10000, access=mmap.ACCESS_READ)
try:
self.assertEqual(m.size(), 0x180000000)
@ -690,8 +689,7 @@ class LargeMmapTests(unittest.TestCase):
tail = b' DEARdear '
start = boundary - len(tail) // 2
end = start + len(tail)
self._create_test_file(start, tail)
with open(TESTFN, 'rb') as f:
with self._make_test_file(start, tail) as f:
m = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
try:
self.assertEqual(m[start:end], tail)