Update enum for py312 (#10670)

test_cases/stdlib/check_enum.py

@@ -2,8 +2,33 @@ from __future__ import annotations
 
 import enum
 import sys
+from typing import Type
 from typing_extensions import Literal, assert_type
 
+A = enum.Enum("A", "spam eggs bacon")
+B = enum.Enum("B", ["spam", "eggs", "bacon"])
+C = enum.Enum("Bar", [("spam", 1), ("eggs", 2), ("bacon", 3)])
+D = enum.Enum("Bar", {"spam": 1, "eggs": 2})
+
+assert_type(A, Type[A])
+assert_type(B, Type[B])
+assert_type(C, Type[C])
+assert_type(D, Type[D])
+
+
+class EnumOfTuples(enum.Enum):
+    X = 1, 2, 3
+    Y = 4, 5, 6
+
+
+assert_type(EnumOfTuples((1, 2, 3)), EnumOfTuples)
+
+# TODO: ideally this test would pass:
+#
+# if sys.version_info >= (3, 12):
+#     assert_type(EnumOfTuples(1, 2, 3), EnumOfTuples)
+
+
 if sys.version_info >= (3, 11):
 
     class Foo(enum.StrEnum):