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bpo-42233: Correctly repr GenericAlias when used with typing module (GH-23081)

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Noticed by @serhiy-storchaka in the bpo.  `typing`'s types were not showing the parameterized generic. 
Eg. previously:
```python
>>> typing.Union[dict[str, float], list[int]]
'typing.Union[dict, list]'
```
Now:
```python
>>> typing.Union[dict[str, float], list[int]]
'typing.Union[dict[str, float], list[int]]'
```

Automerge-Triggered-By: GH:gvanrossum
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kj 2020-11-02 02:13:38 +08:00 • committed by GitHub
parent 148c76b27c
commit 1f7dfb277e
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7
Lib/test/test_typing.py
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@ -300,6 +300,8 @@ class UnionTests(BaseTestCase):
self.assertEqual(repr(u), repr(int))
u = Union[List[int], int]
self.assertEqual(repr(u), 'typing.Union[typing.List[int], int]')
u = Union[list[int], dict[str, float]]
self.assertEqual(repr(u), 'typing.Union[list[int], dict[str, float]]')
def test_cannot_subclass(self):
with self.assertRaises(TypeError):
@ -407,6 +409,7 @@ class TupleTests(BaseTestCase):
self.assertEqual(repr(Tuple[()]), 'typing.Tuple[()]')
self.assertEqual(repr(Tuple[int, float]), 'typing.Tuple[int, float]')
self.assertEqual(repr(Tuple[int, ...]), 'typing.Tuple[int, ...]')
self.assertEqual(repr(Tuple[list[int]]), 'typing.Tuple[list[int]]')
def test_errors(self):
with self.assertRaises(TypeError):
@ -479,6 +482,8 @@ class CallableTests(BaseTestCase):
self.assertEqual(repr(ct2), 'typing.Callable[[str, float], int]')
ctv = Callable[..., str]
self.assertEqual(repr(ctv), 'typing.Callable[..., str]')
ct3 = Callable[[str, float], list[int]]
self.assertEqual(repr(ct3), 'typing.Callable[[str, float], list[int]]')
def test_callable_with_ellipsis(self):
@ -2269,6 +2274,8 @@ class FinalTests(BaseTestCase):
self.assertEqual(repr(cv), 'typing.Final[int]')
cv = Final[Employee]
self.assertEqual(repr(cv), 'typing.Final[%s.Employee]' % __name__)
cv = Final[tuple[int]]
self.assertEqual(repr(cv), 'typing.Final[tuple[int]]')
def test_cannot_subclass(self):
with self.assertRaises(TypeError):