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authorSerhiy Storchaka <storchaka@gmail.com>2019-10-08 13:29:52 (GMT)
committerGitHub <noreply@github.com>2019-10-08 13:29:52 (GMT)
commit13abda41003daf599587991d8291f0dacf6e9519 (patch)
treef86d3dea6c84355c49f36bea32bf1ed846f8b447 /Lib/test
parentb690a2759e62d9ee0b6ea1b20e8f7e4b2cdbf8bb (diff)
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bpo-38405: Make nested subclasses of typing.NamedTuple pickleable. (GH-16641)
Diffstat (limited to 'Lib/test')
-rw-r--r--Lib/test/test_typing.py28
1 files changed, 21 insertions, 7 deletions
diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
index 97e6d88..49417ef 100644
--- a/Lib/test/test_typing.py
+++ b/Lib/test/test_typing.py
@@ -3468,6 +3468,9 @@ class NewTypeTests(BaseTestCase):
class NamedTupleTests(BaseTestCase):
+ class NestedEmployee(NamedTuple):
+ name: str
+ cool: int
def test_basics(self):
Emp = NamedTuple('Emp', [('name', str), ('id', int)])
@@ -3587,14 +3590,25 @@ class XMethBad2(NamedTuple):
with self.assertRaises(TypeError):
NamedTuple('Emp', fields=[('name', str), ('id', int)])
- def test_pickle(self):
+ def test_copy_and_pickle(self):
global Emp # pickle wants to reference the class by name
- Emp = NamedTuple('Emp', [('name', str), ('id', int)])
- jane = Emp('jane', 37)
- for proto in range(pickle.HIGHEST_PROTOCOL + 1):
- z = pickle.dumps(jane, proto)
- jane2 = pickle.loads(z)
- self.assertEqual(jane2, jane)
+ Emp = NamedTuple('Emp', [('name', str), ('cool', int)])
+ for cls in Emp, CoolEmployee, self.NestedEmployee:
+ with self.subTest(cls=cls):
+ jane = cls('jane', 37)
+ for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+ z = pickle.dumps(jane, proto)
+ jane2 = pickle.loads(z)
+ self.assertEqual(jane2, jane)
+ self.assertIsInstance(jane2, cls)
+
+ jane2 = copy(jane)
+ self.assertEqual(jane2, jane)
+ self.assertIsInstance(jane2, cls)
+
+ jane2 = deepcopy(jane)
+ self.assertEqual(jane2, jane)
+ self.assertIsInstance(jane2, cls)
class TypedDictTests(BaseTestCase):