Method test_append_mode_tell

Lib/test/test_io.py:678–686

(self)

    # issue 5008
    def test_append_mode_tell(self):
        with self.open(os_helper.TESTFN, "wb") as f:
            f.write(b"xxx")
        with self.open(os_helper.TESTFN, "ab", buffering=0) as f:
            self.assertEqual(f.tell(), 3)
        with self.open(os_helper.TESTFN, "ab") as f:
            self.assertEqual(f.tell(), 3)
        with self.open(os_helper.TESTFN, "a", encoding="utf-8") as f:
            self.assertGreater(f.tell(), 0)

    def test_destructor(self):
        record = []