Class BadWriter

Lib/test/test_csv.py:98–101

    def test_writer_arg_valid(self):
        self._test_arg_valid(csv.writer, StringIO())
        class BadWriter:
            @property
            def write(self):
                raise OSError
        self.assertRaises(OSError, csv.writer, BadWriter())

    def _test_default_attrs(self, ctor, *args):