diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/test_io.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py index 967018e..f0b38b6 100644 --- a/Lib/test/test_io.py +++ b/Lib/test/test_io.py @@ -232,6 +232,17 @@ class IOTest(unittest.TestCase): else: self.fail("1/0 didn't raise an exception") + # issue 5008 + def test_append_mode_tell(self): + with io.open(test_support.TESTFN, "wb") as f: + f.write(b"xxx") + with io.open(test_support.TESTFN, "ab", buffering=0) as f: + self.assertEqual(f.tell(), 3) + with io.open(test_support.TESTFN, "ab") as f: + self.assertEqual(f.tell(), 3) + with io.open(test_support.TESTFN, "a") as f: + self.assert_(f.tell() > 0) + def test_destructor(self): record = [] class MyFileIO(io.FileIO): |