Method test

Lib/test/test_argparse.py:1800–1804

(self)

class TestFileTypeDeprecation(TestCase):

    def test(self):
        with self.assertWarns(PendingDeprecationWarning) as cm:
            argparse.FileType()
        self.assertIn('FileType is deprecated', str(cm.warning))
        self.assertEqual(cm.filename, __file__)


class TestFileTypeRepr(TestCase):