From: Nikita Sobolev <mail@sobolevn.me>
Date: Tue, 18 Jan 2022 14:43:51 +0000 (+0300)
Subject: bpo-46424: [typing] cover `Annotation[arg]` invalid usage in tests (GH-30663)
X-Git-Tag: v3.11.0a5~221
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=32398294fb3fcf4ee74da54722fd0221c4e6cb74;p=thirdparty%2FPython%2Fcpython.git

bpo-46424: [typing] cover `Annotation[arg]` invalid usage in tests (GH-30663)
---

diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
index c8a077e2f1ff..97c2c7f56cec 100644
--- a/Lib/test/test_typing.py
+++ b/Lib/test/test_typing.py
@@ -4609,6 +4609,10 @@ class AnnotatedTests(BaseTestCase):
         with self.assertRaises(TypeError):
             issubclass(int, Annotated[int, "positive"])
 
+    def test_too_few_type_args(self):
+        with self.assertRaisesRegex(TypeError, 'at least two arguments'):
+            Annotated[int]
+
     def test_pickle(self):
         samples = [typing.Any, typing.Union[int, str],
                    typing.Optional[str], Tuple[int, ...],