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gh-116040: [Enum] fix by-value calls when second value is falsey; e.g. Cardinal(1, 0) (GH-116072)

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Ethan Furman 2024-03-07 13:30:26 -08:00 • committed by GitHub
parent b2d74cdbcd
commit 13ffd4bd9f
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3 changed files with 35 additions and 4 deletions
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23
Lib/test/test_enum.py
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@ -3409,6 +3409,15 @@ class TestSpecial(unittest.TestCase):
self.assertIs(Types(2), Types.NetList)
self.assertIs(Types('nl'), Types.NetList)
def test_second_tuple_item_is_falsey(self):
class Cardinal(Enum):
RIGHT = (1, 0)
UP = (0, 1)
LEFT = (-1, 0)
DOWN = (0, -1)
self.assertIs(Cardinal(1, 0), Cardinal.RIGHT)
self.assertIs(Cardinal(-1, 0), Cardinal.LEFT)
def test_no_members(self):
with self.assertRaisesRegex(
TypeError,
@ -3421,6 +3430,20 @@ class TestSpecial(unittest.TestCase):
):
Flag(7)
def test_empty_names(self):
for nothing, e_type in (
('', None),
('', int),
([], None),
([], int),
({}, None),
({}, int),
):
empty_enum = Enum('empty_enum', nothing, type=e_type)
self.assertEqual(len(empty_enum), 0)
self.assertRaises(TypeError, 'has no members', empty_enum, 0)
class TestOrder(unittest.TestCase):
"test usage of the `_order_` attribute"