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Issue #13873: Fix crash in test_zlib when running on a small (<4GB) tmpfs.

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This commit is contained in:
Nadeem Vawda 2012-02-27 00:42:58 +02:00
parent 3bbdc8e822
commit 05a4dd83af
1 changed files with 5 additions and 18 deletions
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23
Lib/test/test_zlib.py
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@ -66,24 +66,11 @@ class ChecksumTestCase(unittest.TestCase):
# Issue #10276 - check that inputs >=4GB are handled correctly.
class ChecksumBigBufferTestCase(unittest.TestCase):
def setUp(self):
with open(support.TESTFN, "wb+") as f:
f.seek(_4G)
f.write(b"asdf")
f.flush()
self.mapping = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
def tearDown(self):
self.mapping.close()
support.unlink(support.TESTFN)
@unittest.skipUnless(mmap, "mmap() is not available.")
@unittest.skipUnless(sys.maxsize > _4G, "Can't run on a 32-bit system.")
@unittest.skipUnless(support.is_resource_enabled("largefile"),
"May use lots of disk space.")
def test_big_buffer(self):
self.assertEqual(zlib.crc32(self.mapping), 3058686908)
self.assertEqual(zlib.adler32(self.mapping), 82837919)
@bigmemtest(size=_4G + 4, memuse=1, dry_run=False)
def test_big_buffer(self, size):
data = b"nyan" * (_1G + 1)
self.assertEqual(zlib.crc32(data), 1044521549)
self.assertEqual(zlib.adler32(data), 2256789997)
class ExceptionTestCase(unittest.TestCase):