diff options
| -rw-r--r-- | Lib/test/test_typing.py | 13 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Tests/2021-09-25-11-05-31.bpo-45280.3MA6lC.rst | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py index d1887f7..38397a0 100644 --- a/Lib/test/test_typing.py +++ b/Lib/test/test_typing.py @@ -4115,6 +4115,19 @@ class NamedTupleTests(BaseTestCase): self.assertEqual(a.typename, 'foo') self.assertEqual(a.fields, [('bar', tuple)]) + def test_empty_namedtuple(self): + NT = NamedTuple('NT') + + class CNT(NamedTuple): + pass # empty body + + for struct in [NT, CNT]: + with self.subTest(struct=struct): + self.assertEqual(struct._fields, ()) + self.assertEqual(struct._field_defaults, {}) + self.assertEqual(struct.__annotations__, {}) + self.assertIsInstance(struct(), struct) + def test_namedtuple_errors(self): with self.assertRaises(TypeError): NamedTuple.__new__() diff --git a/Misc/NEWS.d/next/Tests/2021-09-25-11-05-31.bpo-45280.3MA6lC.rst b/Misc/NEWS.d/next/Tests/2021-09-25-11-05-31.bpo-45280.3MA6lC.rst new file mode 100644 index 0000000..71691f5 --- /dev/null +++ b/Misc/NEWS.d/next/Tests/2021-09-25-11-05-31.bpo-45280.3MA6lC.rst @@ -0,0 +1 @@ +Add a test case for empty :class:`typing.NamedTuple`. |