bpo-40025: Require _generate_next_value_ to be defined before members (GH-19098)
require `_generate_next_value_` to be defined before members
diff --git a/Lib/test/test_enum.py b/Lib/test/test_enum.py
index ec1cfea..1df0313 100644
--- a/Lib/test/test_enum.py
+++ b/Lib/test/test_enum.py
@@ -1751,6 +1751,16 @@
self.assertEqual(Color.blue.value, 2)
self.assertEqual(Color.green.value, 3)
+ def test_auto_order(self):
+ with self.assertRaises(TypeError):
+ class Color(Enum):
+ red = auto()
+ green = auto()
+ blue = auto()
+ def _generate_next_value_(name, start, count, last):
+ return name
+
+
def test_duplicate_auto(self):
class Dupes(Enum):
first = primero = auto()