bpo-38659: [Enum] add _simple_enum decorator (GH-25497)
add:
* `_simple_enum` decorator to transform a normal class into an enum
* `_test_simple_enum` function to compare
* `_old_convert_` to enable checking `_convert_` generated enums
`_simple_enum` takes a normal class and converts it into an enum:
@simple_enum(Enum)
class Color:
RED = 1
GREEN = 2
BLUE = 3
`_old_convert_` works much like` _convert_` does, using the original logic:
# in a test file
import socket, enum
CheckedAddressFamily = enum._old_convert_(
enum.IntEnum, 'AddressFamily', 'socket',
lambda C: C.isupper() and C.startswith('AF_'),
source=_socket,
)
`_test_simple_enum` takes a traditional enum and a simple enum and
compares the two:
# in the REPL or the same module as Color
class CheckedColor(Enum):
RED = 1
GREEN = 2
BLUE = 3
_test_simple_enum(CheckedColor, Color)
_test_simple_enum(CheckedAddressFamily, socket.AddressFamily)
Any important differences will raise a TypeErrordiff --git a/Lib/test/test_uuid.py b/Lib/test/test_uuid.py
index d6a8333..3f56192 100755
--- a/Lib/test/test_uuid.py
+++ b/Lib/test/test_uuid.py
@@ -4,6 +4,7 @@
import builtins
import contextlib
import copy
+import enum
import io
import os
import pickle
@@ -31,6 +32,13 @@ def get_command_stdout(command, args):
class BaseTestUUID:
uuid = None
+ def test_safe_uuid_enum(self):
+ class CheckedSafeUUID(enum.Enum):
+ safe = 0
+ unsafe = -1
+ unknown = None
+ enum._test_simple_enum(CheckedSafeUUID, py_uuid.SafeUUID)
+
def test_UUID(self):
equal = self.assertEqual
ascending = []