From d0a8f160312efb33cb709e5db22cdd605a889c7f Mon Sep 17 00:00:00 2001 From: Nadeem Vawda Date: Sat, 7 May 2011 14:12:12 +0200 Subject: [PATCH] Issue #11277: Fix tests - crash will not trigger if the file is closed and reopened. --- Lib/test/test_mmap.py | 26 ++++++++++++-------------- 1 file changed, 12 insertions(+), 14 deletions(-) diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py index 463b14c64e..a87e6ae721 100644 --- a/Lib/test/test_mmap.py +++ b/Lib/test/test_mmap.py @@ -645,21 +645,21 @@ 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: - try: - f.seek(num_zeroes) - f.write(tail) - f.flush() - except (IOError, OverflowError): - raise unittest.SkipTest("filesystem does not have largefile support") + 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], b" ") @@ -667,8 +667,7 @@ 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) @@ -681,8 +680,7 @@ 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) -- 2.40.0