Method test_add_StringIO_warns

Lib/test/test_mailbox.py:181–184

(self)

            _bytes_sample_message.split(b'\n'))

    def test_add_StringIO_warns(self):
        with self.assertWarns(DeprecationWarning):
            key = self._box.add(io.StringIO(self._template % "0"))
        self.assertEqual(self._box.get_string(key), self._template % "0")

    def test_add_nonascii_StringIO_raises(self):
        with self.assertWarns(DeprecationWarning):