[3.12] gh-105437: Improve tests of type params names for PEP 695 (GH-105438) (#105452)

miss-islington · sobolevn · web-flow · commit d36aa244c860 · 2023-06-07T14:35:12.000Z
(cherry picked from commit 76883af) Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
diff --git a/Lib/test/test_type_aliases.py b/Lib/test/test_type_aliases.py
@@ -8,8 +8,10 @@
 
 
 class TypeParamsInvalidTest(unittest.TestCase):
-    def test_name_collision_01(self):
-        check_syntax_error(self, """type TA1[A, **A] = None""", "duplicate type parameter 'A'")
+    def test_name_collisions(self):
+        check_syntax_error(self, 'type TA1[A, **A] = None', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'type T[A, *A] = None', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'type T[*A, **A] = None', "duplicate type parameter 'A'")
 
     def test_name_non_collision_02(self):
         ns = run_code("""type TA1[A] = lambda A: A""")
diff --git a/Lib/test/test_type_params.py b/Lib/test/test_type_params.py
@@ -8,8 +8,14 @@
 
 
 class TypeParamsInvalidTest(unittest.TestCase):
-    def test_name_collision_01(self):
-        check_syntax_error(self, """def func[**A, A](): ...""")
+    def test_name_collisions(self):
+        check_syntax_error(self, 'def func[**A, A](): ...', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'def func[A, *A](): ...', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'def func[*A, **A](): ...', "duplicate type parameter 'A'")
+
+        check_syntax_error(self, 'class C[**A, A](): ...', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'class C[A, *A](): ...', "duplicate type parameter 'A'")
+        check_syntax_error(self, 'class C[*A, **A](): ...', "duplicate type parameter 'A'")
 
     def test_name_non_collision_02(self):
         ns = run_code("""def func[A](A): return A""")
