def test_size_adjusting1(self): """mmapped files must be at least PAGESIZE in size""" _, sz, m = mmstats._init_mmap(path=self.path, filename='mmstats-test_size_adjusting-1', size=1) self.assertEqual(sz, mmstats.PAGESIZE) self.assertEqual(m[:], '\x00' * mmstats.PAGESIZE)
def test_init_alt_name(self): expected_fn = os.path.join(self.path, 'mmstats-test_init_alt_name') self.assertFalse(os.path.exists(expected_fn)) fn, sz, m = mmstats._init_mmap( path=self.path, filename='mmstats-test_init_alt_name') self.assertEqual(fn, expected_fn) self.assertTrue(os.path.exists(fn))
def test_size_adjusting2(self): """mmapped files must be multiples of PAGESIZE""" _, sz, m = mmstats._init_mmap( path=self.path, filename='mmstats-test_size_adjusting-2', size=(mmstats.PAGESIZE+1) ) self.assertEqual(sz, mmstats.PAGESIZE * 2) self.assertEqual(m[:], '\x00' * mmstats.PAGESIZE * 2)
def test_truncate(self): """mmapped files must be initialized with null bytes""" fn, sz, m = mmstats._init_mmap( path=self.path, filename='mmstats-test_truncate', ) m[0] = 'X' reopened_file = open(fn) self.assertEqual(reopened_file.read(1), 'X') self.assertEqual(reopened_file.read(1), '\x00')