import copy import enum import doctest import inspect import os import pydoc import sys import unittest import threading import typing import builtins as bltns from collections import OrderedDict from datetime import date from enum import Enum, EnumMeta, IntEnum, StrEnum, EnumType, Flag, IntFlag, unique, auto from enum import STRICT, CONFORM, EJECT, KEEP, _simple_enum, _test_simple_enum from enum import verify, UNIQUE, CONTINUOUS, NAMED_FLAGS, ReprEnum from enum import member, nonmember, _iter_bits_lsb from io import StringIO from pickle import dumps, loads, PicklingError, HIGHEST_PROTOCOL from test import support from test.support import ALWAYS_EQ, REPO_ROOT from test.support import threading_helper from datetime import timedelta python_version = sys.version_info[:2] def load_tests(loader, tests, ignore): tests.addTests(doctest.DocTestSuite(enum)) lib_tests = os.path.join(REPO_ROOT, 'Doc/library/enum.rst') if os.path.exists(lib_tests): tests.addTests(doctest.DocFileSuite( lib_tests, module_relative=False, optionflags=doctest.ELLIPSIS|doctest.NORMALIZE_WHITESPACE, )) howto_tests = os.path.join(REPO_ROOT, 'Doc/howto/enum.rst') if os.path.exists(howto_tests): tests.addTests(doctest.DocFileSuite( howto_tests, module_relative=False, optionflags=doctest.ELLIPSIS|doctest.NORMALIZE_WHITESPACE, )) return tests def reraise_if_not_enum(*enum_types_or_exceptions): from functools import wraps def decorator(func): @wraps(func) def inner(*args, **kwargs): excs = [ e for e in enum_types_or_exceptions if isinstance(e, Exception) ] if len(excs) == 1: raise excs[0] elif excs: raise ExceptionGroup('Enum Exceptions', excs) return func(*args, **kwargs) return inner return decorator MODULE = __name__ SHORT_MODULE = MODULE.split('.')[-1] # for pickle tests try: class Stooges(Enum): LARRY = 1 CURLY = 2 MOE = 3 except Exception as exc: Stooges = exc try: class IntStooges(int, Enum): LARRY = 1 CURLY = 2 MOE = 3 except Exception as exc: IntStooges = exc try: class FloatStooges(float, Enum): LARRY = 1.39 CURLY = 2.72 MOE = 3.142596 except Exception as exc: FloatStooges = exc try: class FlagStooges(Flag): LARRY = 1 CURLY = 2 MOE = 4 BIG = 389 except Exception as exc: FlagStooges = exc try: class FlagStoogesWithZero(Flag): NOFLAG = 0 LARRY = 1 CURLY = 2 MOE = 4 BIG = 389 except Exception as exc: FlagStoogesWithZero = exc try: class IntFlagStooges(IntFlag): LARRY = 1 CURLY = 2 MOE = 4 BIG = 389 except Exception as exc: IntFlagStooges = exc try: class IntFlagStoogesWithZero(IntFlag): NOFLAG = 0 LARRY = 1 CURLY = 2 MOE = 4 BIG = 389 except Exception as exc: IntFlagStoogesWithZero = exc # for pickle test and subclass tests try: class Name(StrEnum): BDFL = 'Guido van Rossum' FLUFL = 'Barry Warsaw' except Exception as exc: Name = exc try: Question = Enum('Question', 'who what when where why', module=__name__) except Exception as exc: Question = exc try: Answer = Enum('Answer', 'him this then there because') except Exception as exc: Answer = exc try: Theory = Enum('Theory', 'rule law supposition', qualname='spanish_inquisition') except Exception as exc: Theory = exc # for doctests try: class Fruit(Enum): TOMATO = 1 BANANA = 2 CHERRY = 3 except Exception: pass def test_pickle_dump_load(assertion, source, target=None): if target is None: target = source for protocol in range(HIGHEST_PROTOCOL + 1): assertion(loads(dumps(source, protocol=protocol)), target) def test_pickle_exception(assertion, exception, obj): for protocol in range(HIGHEST_PROTOCOL + 1): with assertion(exception): dumps(obj, protocol=protocol) class TestHelpers(unittest.TestCase): # _is_descriptor, _is_sunder, _is_dunder sunder_names = '_bad_', '_good_', '_what_ho_' dunder_names = '__mal__', '__bien__', '__que_que__' private_names = '_MyEnum__private', '_MyEnum__still_private', '_MyEnum___triple_private' private_and_sunder_names = '_MyEnum__private_', '_MyEnum__also_private_' random_names = 'okay', '_semi_private', '_weird__', '_MyEnum__' def test_is_descriptor(self): class foo: pass for attr in ('__get__','__set__','__delete__'): obj = foo() self.assertFalse(enum._is_descriptor(obj)) setattr(obj, attr, 1) self.assertTrue(enum._is_descriptor(obj)) def test_sunder(self): for name in self.sunder_names + self.private_and_sunder_names: self.assertTrue(enum._is_sunder(name), '%r is a not sunder name?' % name) for name in self.dunder_names + self.private_names + self.random_names: self.assertFalse(enum._is_sunder(name), '%r is a sunder name?' % name) for s in ('_a_', '_aa_'): self.assertTrue(enum._is_sunder(s)) for s in ('a', 'a_', '_a', '__a', 'a__', '__a__', '_a__', '__a_', '_', '__', '___', '____', '_____',): self.assertFalse(enum._is_sunder(s)) def test_dunder(self): for name in self.dunder_names: self.assertTrue(enum._is_dunder(name), '%r is a not dunder name?' % name) for name in self.sunder_names + self.private_names + self.private_and_sunder_names + self.random_names: self.assertFalse(enum._is_dunder(name), '%r is a dunder name?' % name) for s in ('__a__', '__aa__'): self.assertTrue(enum._is_dunder(s)) for s in ('a', 'a_', '_a', '__a', 'a__', '_a_', '_a__', '__a_', '_', '__', '___', '____', '_____',): self.assertFalse(enum._is_dunder(s)) def test_is_private(self): for name in self.private_names + self.private_and_sunder_names: self.assertTrue(enum._is_private('MyEnum', name), '%r is a not private name?') for name in self.sunder_names + self.dunder_names + self.random_names: self.assertFalse(enum._is_private('MyEnum', name), '%r is a private name?') def test_iter_bits_lsb(self): self.assertEqual(list(_iter_bits_lsb(7)), [1, 2, 4]) self.assertRaisesRegex(ValueError, '-8 is not a positive integer', list, _iter_bits_lsb(-8)) # for subclassing tests class classproperty: def __init__(self, fget=None, fset=None, fdel=None, doc=None): self.fget = fget self.fset = fset self.fdel = fdel if doc is None and fget is not None: doc = fget.__doc__ self.__doc__ = doc def __get__(self, instance, ownerclass): return self.fget(ownerclass) # for global repr tests try: @enum.global_enum class HeadlightsK(IntFlag, boundary=enum.KEEP): OFF_K = 0 LOW_BEAM_K = auto() HIGH_BEAM_K = auto() FOG_K = auto() except Exception as exc: HeadlightsK = exc try: @enum.global_enum class HeadlightsC(IntFlag, boundary=enum.CONFORM): OFF_C = 0 LOW_BEAM_C = auto() HIGH_BEAM_C = auto() FOG_C = auto() except Exception as exc: HeadlightsC = exc try: @enum.global_enum class NoName(Flag): ONE = 1 TWO = 2 except Exception as exc: NoName = exc # tests class _EnumTests: """ Test for behavior that is the same across the different types of enumerations. """ values = None def setUp(self): if self.__class__.__name__[-5:] == 'Class': class BaseEnum(self.enum_type): @enum.property def first(self): return '%s is first!' % self.name class MainEnum(BaseEnum): first = auto() second = auto() third = auto() if issubclass(self.enum_type, Flag): dupe = 3 else: dupe = third self.MainEnum = MainEnum # class NewStrEnum(self.enum_type): def __str__(self): return self.name.upper() first = auto() self.NewStrEnum = NewStrEnum # class NewFormatEnum(self.enum_type): def __format__(self, spec): return self.name.upper() first = auto() self.NewFormatEnum = NewFormatEnum # class NewStrFormatEnum(self.enum_type): def __str__(self): return self.name.title() def __format__(self, spec): return ''.join(reversed(self.name)) first = auto() self.NewStrFormatEnum = NewStrFormatEnum # class NewBaseEnum(self.enum_type): def __str__(self): return self.name.title() def __format__(self, spec): return ''.join(reversed(self.name)) self.NewBaseEnum = NewBaseEnum class NewSubEnum(NewBaseEnum): first = auto() self.NewSubEnum = NewSubEnum # class LazyGNV(self.enum_type): def _generate_next_value_(name, start, last, values): pass self.LazyGNV = LazyGNV # class BusyGNV(self.enum_type): @staticmethod def _generate_next_value_(name, start, last, values): pass self.BusyGNV = BusyGNV # self.is_flag = False self.names = ['first', 'second', 'third'] if issubclass(MainEnum, StrEnum): self.values = self.names elif MainEnum._member_type_ is str: self.values = ['1', '2', '3'] elif issubclass(self.enum_type, Flag): self.values = [1, 2, 4] self.is_flag = True self.dupe2 = MainEnum(5) else: self.values = self.values or [1, 2, 3] # if not getattr(self, 'source_values', False): self.source_values = self.values elif self.__class__.__name__[-8:] == 'Function': @enum.property def first(self): return '%s is first!' % self.name BaseEnum = self.enum_type('BaseEnum', {'first':first}) # first = auto() second = auto() third = auto() if issubclass(self.enum_type, Flag): dupe = 3 else: dupe = third self.MainEnum = MainEnum = BaseEnum('MainEnum', dict(first=first, second=second, third=third, dupe=dupe)) # def __str__(self): return self.name.upper() first = auto() self.NewStrEnum = self.enum_type('NewStrEnum', (('first',first),('__str__',__str__))) # def __format__(self, spec): return self.name.upper() first = auto() self.NewFormatEnum = self.enum_type('NewFormatEnum', [('first',first),('__format__',__format__)]) # def __str__(self): return self.name.title() def __format__(self, spec): return ''.join(reversed(self.name)) first = auto() self.NewStrFormatEnum = self.enum_type('NewStrFormatEnum', dict(first=first, __format__=__format__, __str__=__str__)) # def __str__(self): return self.name.title() def __format__(self, spec): return ''.join(reversed(self.name)) self.NewBaseEnum = self.enum_type('NewBaseEnum', dict(__format__=__format__, __str__=__str__)) self.NewSubEnum = self.NewBaseEnum('NewSubEnum', 'first') # def _generate_next_value_(name, start, last, values): pass self.LazyGNV = self.enum_type('LazyGNV', {'_generate_next_value_':_generate_next_value_}) # @staticmethod def _generate_next_value_(name, start, last, values): pass self.BusyGNV = self.enum_type('BusyGNV', {'_generate_next_value_':_generate_next_value_}) # self.is_flag = False self.names = ['first', 'second', 'third'] if issubclass(MainEnum, StrEnum): self.values = self.names elif MainEnum._member_type_ is str: self.values = ['1', '2', '3'] elif issubclass(self.enum_type, Flag): self.values = [1, 2, 4] self.is_flag = True self.dupe2 = MainEnum(5) else: self.values = self.values or [1, 2, 3] # if not getattr(self, 'source_values', False): self.source_values = self.values else: raise ValueError('unknown enum style: %r' % self.__class__.__name__) def assertFormatIsValue(self, spec, member): self.assertEqual(spec.format(member), spec.format(member.value)) def assertFormatIsStr(self, spec, member): self.assertEqual(spec.format(member), spec.format(str(member))) def test_attribute_deletion(self): class Season(self.enum_type): SPRING = auto() SUMMER = auto() AUTUMN = auto() # def spam(cls): pass # self.assertTrue(hasattr(Season, 'spam')) del Season.spam self.assertFalse(hasattr(Season, 'spam')) # with self.assertRaises(AttributeError): del Season.SPRING with self.assertRaises(AttributeError): del Season.DRY with self.assertRaises(AttributeError): del Season.SPRING.name def test_bad_new_super(self): with self.assertRaisesRegex( TypeError, 'do not use .super...__new__;', ): class BadSuper(self.enum_type): def __new__(cls, value): obj = super().__new__(cls, value) return obj failed = 1 def test_basics(self): TE = self.MainEnum if self.is_flag: self.assertEqual(repr(TE), "") self.assertEqual(str(TE), "") self.assertEqual(format(TE), "") self.assertTrue(TE(5) is self.dupe2) else: self.assertEqual(repr(TE), "") self.assertEqual(str(TE), "") self.assertEqual(format(TE), "") self.assertEqual(list(TE), [TE.first, TE.second, TE.third]) self.assertEqual( [m.name for m in TE], self.names, ) self.assertEqual( [m.value for m in TE], self.values, ) self.assertEqual( [m.first for m in TE], ['first is first!', 'second is first!', 'third is first!'] ) for member, name in zip(TE, self.names, strict=True): self.assertIs(TE[name], member) for member, value in zip(TE, self.values, strict=True): self.assertIs(TE(value), member) if issubclass(TE, StrEnum): self.assertTrue(TE.dupe is TE('third') is TE['dupe']) elif TE._member_type_ is str: self.assertTrue(TE.dupe is TE('3') is TE['dupe']) elif issubclass(TE, Flag): self.assertTrue(TE.dupe is TE(3) is TE['dupe']) else: self.assertTrue(TE.dupe is TE(self.values[2]) is TE['dupe']) def test_bool_is_true(self): class Empty(self.enum_type): pass self.assertTrue(Empty) # self.assertTrue(self.MainEnum) for member in self.MainEnum: self.assertTrue(member) def test_changing_member_fails(self): MainEnum = self.MainEnum with self.assertRaises(AttributeError): self.MainEnum.second = 'really first' def test_contains_tf(self): MainEnum = self.MainEnum self.assertIn(MainEnum.first, MainEnum) self.assertTrue(self.values[0] in MainEnum) if type(self) not in (TestStrEnumClass, TestStrEnumFunction): self.assertFalse('first' in MainEnum) val = MainEnum.dupe self.assertIn(val, MainEnum) self.assertNotIn(float('nan'), MainEnum) # class OtherEnum(Enum): one = auto() two = auto() self.assertNotIn(OtherEnum.two, MainEnum) # if MainEnum._member_type_ is object: # enums without mixed data types will always be False class NotEqualEnum(self.enum_type): this = self.source_values[0] that = self.source_values[1] self.assertNotIn(NotEqualEnum.this, MainEnum) self.assertNotIn(NotEqualEnum.that, MainEnum) else: # enums with mixed data types may be True class EqualEnum(self.enum_type): this = self.source_values[0] that = self.source_values[1] self.assertIn(EqualEnum.this, MainEnum) self.assertIn(EqualEnum.that, MainEnum) def test_contains_same_name_diff_enum_diff_values(self): MainEnum = self.MainEnum # class OtherEnum(Enum): first = "brand" second = "new" third = "values" # self.assertIn(MainEnum.first, MainEnum) self.assertIn(MainEnum.second, MainEnum) self.assertIn(MainEnum.third, MainEnum) self.assertNotIn(MainEnum.first, OtherEnum) self.assertNotIn(MainEnum.second, OtherEnum) self.assertNotIn(MainEnum.third, OtherEnum) # self.assertIn(OtherEnum.first, OtherEnum) self.assertIn(OtherEnum.second, OtherEnum) self.assertIn(OtherEnum.third, OtherEnum) self.assertNotIn(OtherEnum.first, MainEnum) self.assertNotIn(OtherEnum.second, MainEnum) self.assertNotIn(OtherEnum.third, MainEnum) def test_dir_on_class(self): TE = self.MainEnum self.assertEqual(set(dir(TE)), set(enum_dir(TE))) def test_dir_on_item(self): TE = self.MainEnum self.assertEqual(set(dir(TE.first)), set(member_dir(TE.first))) def test_dir_with_added_behavior(self): class Test(self.enum_type): this = auto() these = auto() def wowser(self): return ("Wowser! I'm %s!" % self.name) self.assertTrue('wowser' not in dir(Test)) self.assertTrue('wowser' in dir(Test.this)) def test_dir_on_sub_with_behavior_on_super(self): # see issue22506 class SuperEnum(self.enum_type): def invisible(self): return "did you see me?" class SubEnum(SuperEnum): sample = auto() self.assertTrue('invisible' not in dir(SubEnum)) self.assertTrue('invisible' in dir(SubEnum.sample)) def test_dir_on_sub_with_behavior_including_instance_dict_on_super(self): # see issue40084 class SuperEnum(self.enum_type): def __new__(cls, *value, **kwds): new = self.enum_type._member_type_.__new__ if self.enum_type._member_type_ is object: obj = new(cls) else: if isinstance(value[0], tuple): create_value ,= value[0] else: create_value = value obj = new(cls, *create_value) obj._value_ = value[0] if len(value) == 1 else value obj.description = 'test description' return obj class SubEnum(SuperEnum): sample = self.source_values[1] self.assertTrue('description' not in dir(SubEnum)) self.assertTrue('description' in dir(SubEnum.sample), dir(SubEnum.sample)) def test_empty_enum_has_no_values(self): with self.assertRaisesRegex(TypeError, "<.... 'NewBaseEnum'> has no members"): self.NewBaseEnum(7) def test_enum_in_enum_out(self): Main = self.MainEnum self.assertIs(Main(Main.first), Main.first) def test_gnv_is_static(self): lazy = self.LazyGNV busy = self.BusyGNV self.assertTrue(type(lazy.__dict__['_generate_next_value_']) is staticmethod) self.assertTrue(type(busy.__dict__['_generate_next_value_']) is staticmethod) def test_hash(self): MainEnum = self.MainEnum mapping = {} mapping[MainEnum.first] = '1225' mapping[MainEnum.second] = '0315' mapping[MainEnum.third] = '0704' self.assertEqual(mapping[MainEnum.second], '0315') def test_invalid_names(self): with self.assertRaises(ValueError): class Wrong(self.enum_type): mro = 9 with self.assertRaises(ValueError): class Wrong(self.enum_type): _create_= 11 with self.assertRaises(ValueError): class Wrong(self.enum_type): _get_mixins_ = 9 with self.assertRaises(ValueError): class Wrong(self.enum_type): _find_new_ = 1 with self.assertRaises(ValueError): class Wrong(self.enum_type): _any_name_ = 9 def test_object_str_override(self): "check that setting __str__ to object's is not reset to Enum's" class Generic(self.enum_type): item = self.source_values[2] def __repr__(self): return "%s.test" % (self._name_, ) __str__ = object.__str__ self.assertEqual(str(Generic.item), 'item.test') def test_overridden_str(self): NS = self.NewStrEnum self.assertEqual(str(NS.first), NS.first.name.upper()) self.assertEqual(format(NS.first), NS.first.name.upper()) def test_overridden_str_format(self): NSF = self.NewStrFormatEnum self.assertEqual(str(NSF.first), NSF.first.name.title()) self.assertEqual(format(NSF.first), ''.join(reversed(NSF.first.name))) def test_overridden_str_format_inherited(self): NSE = self.NewSubEnum self.assertEqual(str(NSE.first), NSE.first.name.title()) self.assertEqual(format(NSE.first), ''.join(reversed(NSE.first.name))) def test_programmatic_function_string(self): MinorEnum = self.enum_type('MinorEnum', 'june july august') lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) values = self.values if self.enum_type is StrEnum: values = ['june','july','august'] for month, av in zip('june july august'.split(), values): e = MinorEnum[month] self.assertEqual(e.value, av, list(MinorEnum)) self.assertEqual(e.name, month) if MinorEnum._member_type_ is not object and issubclass(MinorEnum, MinorEnum._member_type_): self.assertEqual(e, av) else: self.assertNotEqual(e, av) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) self.assertIs(e, MinorEnum(av)) def test_programmatic_function_string_list(self): MinorEnum = self.enum_type('MinorEnum', ['june', 'july', 'august']) lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) values = self.values if self.enum_type is StrEnum: values = ['june','july','august'] for month, av in zip('june july august'.split(), values): e = MinorEnum[month] self.assertEqual(e.value, av) self.assertEqual(e.name, month) if MinorEnum._member_type_ is not object and issubclass(MinorEnum, MinorEnum._member_type_): self.assertEqual(e, av) else: self.assertNotEqual(e, av) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) self.assertIs(e, MinorEnum(av)) def test_programmatic_function_iterable(self): MinorEnum = self.enum_type( 'MinorEnum', (('june', self.source_values[0]), ('july', self.source_values[1]), ('august', self.source_values[2])) ) lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) for month, av in zip('june july august'.split(), self.values): e = MinorEnum[month] self.assertEqual(e.value, av) self.assertEqual(e.name, month) if MinorEnum._member_type_ is not object and issubclass(MinorEnum, MinorEnum._member_type_): self.assertEqual(e, av) else: self.assertNotEqual(e, av) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) self.assertIs(e, MinorEnum(av)) def test_programmatic_function_from_dict(self): MinorEnum = self.enum_type( 'MinorEnum', OrderedDict((('june', self.source_values[0]), ('july', self.source_values[1]), ('august', self.source_values[2]))) ) lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) for month, av in zip('june july august'.split(), self.values): e = MinorEnum[month] if MinorEnum._member_type_ is not object and issubclass(MinorEnum, MinorEnum._member_type_): self.assertEqual(e, av) else: self.assertNotEqual(e, av) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) self.assertIs(e, MinorEnum(av)) def test_repr(self): TE = self.MainEnum if self.is_flag: self.assertEqual(repr(TE(0)), "") self.assertEqual(repr(TE.dupe), "") self.assertEqual(repr(self.dupe2), "") elif issubclass(TE, StrEnum): self.assertEqual(repr(TE.dupe), "") else: self.assertEqual(repr(TE.dupe), "" % (self.values[2], ), TE._value_repr_) for name, value, member in zip(self.names, self.values, TE, strict=True): self.assertEqual(repr(member), "" % (member.name, member.value)) def test_repr_override(self): class Generic(self.enum_type): first = auto() second = auto() third = auto() def __repr__(self): return "don't you just love shades of %s?" % self.name self.assertEqual( repr(Generic.third), "don't you just love shades of third?", ) def test_inherited_repr(self): class MyEnum(self.enum_type): def __repr__(self): return "My name is %s." % self.name class MySubEnum(MyEnum): this = auto() that = auto() theother = auto() self.assertEqual(repr(MySubEnum.that), "My name is that.") def test_multiple_superclasses_repr(self): class _EnumSuperClass(metaclass=EnumMeta): pass class E(_EnumSuperClass, Enum): A = 1 self.assertEqual(repr(E.A), "") def test_reversed_iteration_order(self): self.assertEqual( list(reversed(self.MainEnum)), [self.MainEnum.third, self.MainEnum.second, self.MainEnum.first], ) class _PlainOutputTests: def test_str(self): TE = self.MainEnum if self.is_flag: self.assertEqual(str(TE(0)), "MainEnum(0)") self.assertEqual(str(TE.dupe), "MainEnum.dupe") self.assertEqual(str(self.dupe2), "MainEnum.first|third") else: self.assertEqual(str(TE.dupe), "MainEnum.third") for name, value, member in zip(self.names, self.values, TE, strict=True): self.assertEqual(str(member), "MainEnum.%s" % (member.name, )) def test_format(self): TE = self.MainEnum if self.is_flag: self.assertEqual(format(TE.dupe), "MainEnum.dupe") self.assertEqual(format(self.dupe2), "MainEnum.first|third") else: self.assertEqual(format(TE.dupe), "MainEnum.third") for name, value, member in zip(self.names, self.values, TE, strict=True): self.assertEqual(format(member), "MainEnum.%s" % (member.name, )) def test_overridden_format(self): NF = self.NewFormatEnum self.assertEqual(str(NF.first), "NewFormatEnum.first", '%s %r' % (NF.__str__, NF.first)) self.assertEqual(format(NF.first), "FIRST") def test_format_specs(self): TE = self.MainEnum self.assertFormatIsStr('{}', TE.second) self.assertFormatIsStr('{:}', TE.second) self.assertFormatIsStr('{:20}', TE.second) self.assertFormatIsStr('{:^20}', TE.second) self.assertFormatIsStr('{:>20}', TE.second) self.assertFormatIsStr('{:<20}', TE.second) self.assertFormatIsStr('{:5.2}', TE.second) class _MixedOutputTests: def test_str(self): TE = self.MainEnum if self.is_flag: self.assertEqual(str(TE.dupe), "MainEnum.dupe") self.assertEqual(str(self.dupe2), "MainEnum.first|third") else: self.assertEqual(str(TE.dupe), "MainEnum.third") for name, value, member in zip(self.names, self.values, TE, strict=True): self.assertEqual(str(member), "MainEnum.%s" % (member.name, )) def test_format(self): TE = self.MainEnum if self.is_flag: self.assertEqual(format(TE.dupe), "MainEnum.dupe") self.assertEqual(format(self.dupe2), "MainEnum.first|third") else: self.assertEqual(format(TE.dupe), "MainEnum.third") for name, value, member in zip(self.names, self.values, TE, strict=True): self.assertEqual(format(member), "MainEnum.%s" % (member.name, )) def test_overridden_format(self): NF = self.NewFormatEnum self.assertEqual(str(NF.first), "NewFormatEnum.first") self.assertEqual(format(NF.first), "FIRST") def test_format_specs(self): TE = self.MainEnum self.assertFormatIsStr('{}', TE.first) self.assertFormatIsStr('{:}', TE.first) self.assertFormatIsStr('{:20}', TE.first) self.assertFormatIsStr('{:^20}', TE.first) self.assertFormatIsStr('{:>20}', TE.first) self.assertFormatIsStr('{:<20}', TE.first) self.assertFormatIsStr('{:5.2}', TE.first) class _MinimalOutputTests: def test_str(self): TE = self.MainEnum if self.is_flag: self.assertEqual(str(TE.dupe), "3") self.assertEqual(str(self.dupe2), "5") else: self.assertEqual(str(TE.dupe), str(self.values[2])) for name, value, member in zip(self.names, self.values, TE, strict=True): self.assertEqual(str(member), str(value)) def test_format(self): TE = self.MainEnum if self.is_flag: self.assertEqual(format(TE.dupe), "3") self.assertEqual(format(self.dupe2), "5") else: self.assertEqual(format(TE.dupe), format(self.values[2])) for name, value, member in zip(self.names, self.values, TE, strict=True): self.assertEqual(format(member), format(value)) def test_overridden_format(self): NF = self.NewFormatEnum self.assertEqual(str(NF.first), str(self.values[0])) self.assertEqual(format(NF.first), "FIRST") def test_format_specs(self): TE = self.MainEnum self.assertFormatIsValue('{}', TE.third) self.assertFormatIsValue('{:}', TE.third) self.assertFormatIsValue('{:20}', TE.third) self.assertFormatIsValue('{:^20}', TE.third) self.assertFormatIsValue('{:>20}', TE.third) self.assertFormatIsValue('{:<20}', TE.third) if TE._member_type_ is float: self.assertFormatIsValue('{:n}', TE.third) self.assertFormatIsValue('{:5.2}', TE.third) self.assertFormatIsValue('{:f}', TE.third) def test_copy(self): TE = self.MainEnum copied = copy.copy(TE) self.assertEqual(copied, TE) self.assertIs(copied, TE) deep = copy.deepcopy(TE) self.assertEqual(deep, TE) self.assertIs(deep, TE) def test_copy_member(self): TE = self.MainEnum copied = copy.copy(TE.first) self.assertIs(copied, TE.first) deep = copy.deepcopy(TE.first) self.assertIs(deep, TE.first) class _FlagTests: def test_default_missing_with_wrong_type_value(self): with self.assertRaisesRegex( ValueError, "'RED' is not a valid ", ) as ctx: self.MainEnum('RED') self.assertIs(ctx.exception.__context__, None) def test_closed_invert_expectations(self): class ClosedAB(self.enum_type): A = 1 B = 2 MASK = 3 A, B = ClosedAB AB_MASK = ClosedAB.MASK # self.assertIs(~A, B) self.assertIs(~B, A) self.assertIs(~(A|B), ClosedAB(0)) self.assertIs(~AB_MASK, ClosedAB(0)) self.assertIs(~ClosedAB(0), (A|B)) # class ClosedXYZ(self.enum_type): X = 4 Y = 2 Z = 1 MASK = 7 X, Y, Z = ClosedXYZ XYZ_MASK = ClosedXYZ.MASK # self.assertIs(~X, Y|Z) self.assertIs(~Y, X|Z) self.assertIs(~Z, X|Y) self.assertIs(~(X|Y), Z) self.assertIs(~(X|Z), Y) self.assertIs(~(Y|Z), X) self.assertIs(~(X|Y|Z), ClosedXYZ(0)) self.assertIs(~XYZ_MASK, ClosedXYZ(0)) self.assertIs(~ClosedXYZ(0), (X|Y|Z)) def test_open_invert_expectations(self): class OpenAB(self.enum_type): A = 1 B = 2 MASK = 255 A, B = OpenAB AB_MASK = OpenAB.MASK # if OpenAB._boundary_ in (EJECT, KEEP): self.assertIs(~A, OpenAB(254)) self.assertIs(~B, OpenAB(253)) self.assertIs(~(A|B), OpenAB(252)) self.assertIs(~AB_MASK, OpenAB(0)) self.assertIs(~OpenAB(0), AB_MASK) else: self.assertIs(~A, B) self.assertIs(~B, A) self.assertIs(~(A|B), OpenAB(0)) self.assertIs(~AB_MASK, OpenAB(0)) self.assertIs(~OpenAB(0), (A|B)) # class OpenXYZ(self.enum_type): X = 4 Y = 2 Z = 1 MASK = 31 X, Y, Z = OpenXYZ XYZ_MASK = OpenXYZ.MASK # if OpenXYZ._boundary_ in (EJECT, KEEP): self.assertIs(~X, OpenXYZ(27)) self.assertIs(~Y, OpenXYZ(29)) self.assertIs(~Z, OpenXYZ(30)) self.assertIs(~(X|Y), OpenXYZ(25)) self.assertIs(~(X|Z), OpenXYZ(26)) self.assertIs(~(Y|Z), OpenXYZ(28)) self.assertIs(~(X|Y|Z), OpenXYZ(24)) self.assertIs(~XYZ_MASK, OpenXYZ(0)) self.assertTrue(~OpenXYZ(0), XYZ_MASK) else: self.assertIs(~X, Y|Z) self.assertIs(~Y, X|Z) self.assertIs(~Z, X|Y) self.assertIs(~(X|Y), Z) self.assertIs(~(X|Z), Y) self.assertIs(~(Y|Z), X) self.assertIs(~(X|Y|Z), OpenXYZ(0)) self.assertIs(~XYZ_MASK, OpenXYZ(0)) self.assertTrue(~OpenXYZ(0), (X|Y|Z)) class TestPlainEnumClass(_EnumTests, _PlainOutputTests, unittest.TestCase): enum_type = Enum class TestPlainEnumFunction(_EnumTests, _PlainOutputTests, unittest.TestCase): enum_type = Enum class TestPlainFlagClass(_EnumTests, _PlainOutputTests, _FlagTests, unittest.TestCase): enum_type = Flag def test_none_member(self): class FlagWithNoneMember(Flag): A = 1 E = None self.assertEqual(FlagWithNoneMember.A.value, 1) self.assertIs(FlagWithNoneMember.E.value, None) with self.assertRaisesRegex(TypeError, r"'FlagWithNoneMember.E' cannot be combined with other flags with |"): FlagWithNoneMember.A | FlagWithNoneMember.E with self.assertRaisesRegex(TypeError, r"'FlagWithNoneMember.E' cannot be combined with other flags with &"): FlagWithNoneMember.E & FlagWithNoneMember.A with self.assertRaisesRegex(TypeError, r"'FlagWithNoneMember.E' cannot be combined with other flags with \^"): FlagWithNoneMember.A ^ FlagWithNoneMember.E with self.assertRaisesRegex(TypeError, r"'FlagWithNoneMember.E' cannot be inverted"): ~FlagWithNoneMember.E class TestPlainFlagFunction(_EnumTests, _PlainOutputTests, _FlagTests, unittest.TestCase): enum_type = Flag class TestIntEnumClass(_EnumTests, _MinimalOutputTests, unittest.TestCase): enum_type = IntEnum # def test_shadowed_attr(self): class Number(IntEnum): divisor = 1 numerator = 2 # self.assertEqual(Number.divisor.numerator, 1) self.assertIs(Number.numerator.divisor, Number.divisor) class TestIntEnumFunction(_EnumTests, _MinimalOutputTests, unittest.TestCase): enum_type = IntEnum # def test_shadowed_attr(self): Number = IntEnum('Number', ('divisor', 'numerator')) # self.assertEqual(Number.divisor.numerator, 1) self.assertIs(Number.numerator.divisor, Number.divisor) class TestStrEnumClass(_EnumTests, _MinimalOutputTests, unittest.TestCase): enum_type = StrEnum # def test_shadowed_attr(self): class Book(StrEnum): author = 'author' title = 'title' # self.assertEqual(Book.author.title(), 'Author') self.assertEqual(Book.title.title(), 'Title') self.assertIs(Book.title.author, Book.author) class TestStrEnumFunction(_EnumTests, _MinimalOutputTests, unittest.TestCase): enum_type = StrEnum # def test_shadowed_attr(self): Book = StrEnum('Book', ('author', 'title')) # self.assertEqual(Book.author.title(), 'Author') self.assertEqual(Book.title.title(), 'Title') self.assertIs(Book.title.author, Book.author) class TestIntFlagClass(_EnumTests, _MinimalOutputTests, _FlagTests, unittest.TestCase): enum_type = IntFlag class TestIntFlagFunction(_EnumTests, _MinimalOutputTests, _FlagTests, unittest.TestCase): enum_type = IntFlag class TestMixedIntClass(_EnumTests, _MixedOutputTests, unittest.TestCase): class enum_type(int, Enum): pass class TestMixedIntFunction(_EnumTests, _MixedOutputTests, unittest.TestCase): enum_type = Enum('enum_type', type=int) class TestMixedStrClass(_EnumTests, _MixedOutputTests, unittest.TestCase): class enum_type(str, Enum): pass class TestMixedStrFunction(_EnumTests, _MixedOutputTests, unittest.TestCase): enum_type = Enum('enum_type', type=str) class TestMixedIntFlagClass(_EnumTests, _MixedOutputTests, _FlagTests, unittest.TestCase): class enum_type(int, Flag): pass class TestMixedIntFlagFunction(_EnumTests, _MixedOutputTests, _FlagTests, unittest.TestCase): enum_type = Flag('enum_type', type=int) class TestMixedDateClass(_EnumTests, _MixedOutputTests, unittest.TestCase): # values = [date(2021, 12, 25), date(2020, 3, 15), date(2019, 11, 27)] source_values = [(2021, 12, 25), (2020, 3, 15), (2019, 11, 27)] # class enum_type(date, Enum): @staticmethod def _generate_next_value_(name, start, count, last_values): values = [(2021, 12, 25), (2020, 3, 15), (2019, 11, 27)] return values[count] class TestMixedDateFunction(_EnumTests, _MixedOutputTests, unittest.TestCase): # values = [date(2021, 12, 25), date(2020, 3, 15), date(2019, 11, 27)] source_values = [(2021, 12, 25), (2020, 3, 15), (2019, 11, 27)] # # staticmethod decorator will be added by EnumType if not present def _generate_next_value_(name, start, count, last_values): values = [(2021, 12, 25), (2020, 3, 15), (2019, 11, 27)] return values[count] # enum_type = Enum('enum_type', {'_generate_next_value_':_generate_next_value_}, type=date) class TestMinimalDateClass(_EnumTests, _MinimalOutputTests, unittest.TestCase): # values = [date(2023, 12, 1), date(2016, 2, 29), date(2009, 1, 1)] source_values = [(2023, 12, 1), (2016, 2, 29), (2009, 1, 1)] # class enum_type(date, ReprEnum): # staticmethod decorator will be added by EnumType if absent def _generate_next_value_(name, start, count, last_values): values = [(2023, 12, 1), (2016, 2, 29), (2009, 1, 1)] return values[count] class TestMinimalDateFunction(_EnumTests, _MinimalOutputTests, unittest.TestCase): # values = [date(2023, 12, 1), date(2016, 2, 29), date(2009, 1, 1)] source_values = [(2023, 12, 1), (2016, 2, 29), (2009, 1, 1)] # @staticmethod def _generate_next_value_(name, start, count, last_values): values = [(2023, 12, 1), (2016, 2, 29), (2009, 1, 1)] return values[count] # enum_type = ReprEnum('enum_type', {'_generate_next_value_':_generate_next_value_}, type=date) class TestMixedFloatClass(_EnumTests, _MixedOutputTests, unittest.TestCase): # values = [1.1, 2.2, 3.3] # class enum_type(float, Enum): def _generate_next_value_(name, start, count, last_values): values = [1.1, 2.2, 3.3] return values[count] class TestMixedFloatFunction(_EnumTests, _MixedOutputTests, unittest.TestCase): # values = [1.1, 2.2, 3.3] # def _generate_next_value_(name, start, count, last_values): values = [1.1, 2.2, 3.3] return values[count] # enum_type = Enum('enum_type', {'_generate_next_value_':_generate_next_value_}, type=float) class TestMinimalFloatClass(_EnumTests, _MinimalOutputTests, unittest.TestCase): # values = [4.4, 5.5, 6.6] # class enum_type(float, ReprEnum): def _generate_next_value_(name, start, count, last_values): values = [4.4, 5.5, 6.6] return values[count] class TestMinimalFloatFunction(_EnumTests, _MinimalOutputTests, unittest.TestCase): # values = [4.4, 5.5, 6.6] # def _generate_next_value_(name, start, count, last_values): values = [4.4, 5.5, 6.6] return values[count] # enum_type = ReprEnum('enum_type', {'_generate_next_value_':_generate_next_value_}, type=float) class TestSpecial(unittest.TestCase): """ various operations that are not attributable to every possible enum """ def setUp(self): class Season(Enum): SPRING = 1 SUMMER = 2 AUTUMN = 3 WINTER = 4 self.Season = Season # class Grades(IntEnum): A = 5 B = 4 C = 3 D = 2 F = 0 self.Grades = Grades # class Directional(str, Enum): EAST = 'east' WEST = 'west' NORTH = 'north' SOUTH = 'south' self.Directional = Directional # from datetime import date class Holiday(date, Enum): NEW_YEAR = 2013, 1, 1 IDES_OF_MARCH = 2013, 3, 15 self.Holiday = Holiday def test_bool(self): # plain Enum members are always True class Logic(Enum): true = True false = False self.assertTrue(Logic.true) self.assertTrue(Logic.false) # unless overridden class RealLogic(Enum): true = True false = False def __bool__(self): return bool(self._value_) self.assertTrue(RealLogic.true) self.assertFalse(RealLogic.false) # mixed Enums depend on mixed-in type class IntLogic(int, Enum): true = 1 false = 0 self.assertTrue(IntLogic.true) self.assertFalse(IntLogic.false) def test_comparisons(self): Season = self.Season with self.assertRaises(TypeError): Season.SPRING < Season.WINTER with self.assertRaises(TypeError): Season.SPRING > 4 # self.assertNotEqual(Season.SPRING, 1) # class Part(Enum): SPRING = 1 CLIP = 2 BARREL = 3 # self.assertNotEqual(Season.SPRING, Part.SPRING) with self.assertRaises(TypeError): Season.SPRING < Part.CLIP @unittest.skip('to-do list') def test_dir_with_custom_dunders(self): class PlainEnum(Enum): pass cls_dir = dir(PlainEnum) self.assertNotIn('__repr__', cls_dir) self.assertNotIn('__str__', cls_dir) self.assertNotIn('__format__', cls_dir) self.assertNotIn('__init__', cls_dir) # class MyEnum(Enum): def __repr__(self): return object.__repr__(self) def __str__(self): return object.__repr__(self) def __format__(self): return object.__repr__(self) def __init__(self): pass cls_dir = dir(MyEnum) self.assertIn('__repr__', cls_dir) self.assertIn('__str__', cls_dir) self.assertIn('__format__', cls_dir) self.assertIn('__init__', cls_dir) def test_duplicate_name_error(self): with self.assertRaises(TypeError): class Color(Enum): red = 1 green = 2 blue = 3 red = 4 # with self.assertRaises(TypeError): class Color(Enum): red = 1 green = 2 blue = 3 def red(self): return 'red' # with self.assertRaises(TypeError): class Color(Enum): @enum.property def red(self): return 'redder' red = 1 green = 2 blue = 3 @reraise_if_not_enum(Theory) def test_enum_function_with_qualname(self): self.assertEqual(Theory.__qualname__, 'spanish_inquisition') def test_enum_of_types(self): """Support using Enum to refer to types deliberately.""" class MyTypes(Enum): i = int f = float s = str self.assertEqual(MyTypes.i.value, int) self.assertEqual(MyTypes.f.value, float) self.assertEqual(MyTypes.s.value, str) class Foo: pass class Bar: pass class MyTypes2(Enum): a = Foo b = Bar self.assertEqual(MyTypes2.a.value, Foo) self.assertEqual(MyTypes2.b.value, Bar) class SpamEnumNotInner: pass class SpamEnum(Enum): spam = SpamEnumNotInner self.assertEqual(SpamEnum.spam.value, SpamEnumNotInner) def test_enum_of_generic_aliases(self): class E(Enum): a = typing.List[int] b = list[int] self.assertEqual(E.a.value, typing.List[int]) self.assertEqual(E.b.value, list[int]) self.assertEqual(repr(E.a), '') self.assertEqual(repr(E.b), '') @unittest.skipIf( python_version >= (3, 13), 'inner classes are not members', ) def test_nested_classes_in_enum_are_members(self): """ Check for warnings pre-3.13 """ with self.assertWarnsRegex(DeprecationWarning, 'will not become a member'): class Outer(Enum): a = 1 b = 2 class Inner(Enum): foo = 10 bar = 11 self.assertTrue(isinstance(Outer.Inner, Outer)) self.assertEqual(Outer.a.value, 1) self.assertEqual(Outer.Inner.value.foo.value, 10) self.assertEqual( list(Outer.Inner.value), [Outer.Inner.value.foo, Outer.Inner.value.bar], ) self.assertEqual( list(Outer), [Outer.a, Outer.b, Outer.Inner], ) @unittest.skipIf( python_version < (3, 13), 'inner classes are still members', ) def test_nested_classes_in_enum_are_not_members(self): """Support locally-defined nested classes.""" class Outer(Enum): a = 1 b = 2 class Inner(Enum): foo = 10 bar = 11 self.assertTrue(isinstance(Outer.Inner, type)) self.assertEqual(Outer.a.value, 1) self.assertEqual(Outer.Inner.foo.value, 10) self.assertEqual( list(Outer.Inner), [Outer.Inner.foo, Outer.Inner.bar], ) self.assertEqual( list(Outer), [Outer.a, Outer.b], ) def test_nested_classes_in_enum_with_nonmember(self): class Outer(Enum): a = 1 b = 2 @nonmember class Inner(Enum): foo = 10 bar = 11 self.assertTrue(isinstance(Outer.Inner, type)) self.assertEqual(Outer.a.value, 1) self.assertEqual(Outer.Inner.foo.value, 10) self.assertEqual( list(Outer.Inner), [Outer.Inner.foo, Outer.Inner.bar], ) self.assertEqual( list(Outer), [Outer.a, Outer.b], ) def test_enum_of_types_with_nonmember(self): """Support using Enum to refer to types deliberately.""" class MyTypes(Enum): i = int f = nonmember(float) s = str self.assertEqual(MyTypes.i.value, int) self.assertTrue(MyTypes.f is float) self.assertEqual(MyTypes.s.value, str) class Foo: pass class Bar: pass class MyTypes2(Enum): a = Foo b = nonmember(Bar) self.assertEqual(MyTypes2.a.value, Foo) self.assertTrue(MyTypes2.b is Bar) class SpamEnumIsInner: pass class SpamEnum(Enum): spam = nonmember(SpamEnumIsInner) self.assertTrue(SpamEnum.spam is SpamEnumIsInner) def test_using_members_as_nonmember(self): class Example(Flag): A = 1 B = 2 ALL = nonmember(A | B) self.assertEqual(Example.A.value, 1) self.assertEqual(Example.B.value, 2) self.assertEqual(Example.ALL, 3) self.assertIs(type(Example.ALL), int) class Example(Flag): A = auto() B = auto() ALL = nonmember(A | B) self.assertEqual(Example.A.value, 1) self.assertEqual(Example.B.value, 2) self.assertEqual(Example.ALL, 3) self.assertIs(type(Example.ALL), int) def test_nested_classes_in_enum_with_member(self): """Support locally-defined nested classes.""" class Outer(Enum): a = 1 b = 2 @member class Inner(Enum): foo = 10 bar = 11 self.assertTrue(isinstance(Outer.Inner, Outer)) self.assertEqual(Outer.a.value, 1) self.assertEqual(Outer.Inner.value.foo.value, 10) self.assertEqual( list(Outer.Inner.value), [Outer.Inner.value.foo, Outer.Inner.value.bar], ) self.assertEqual( list(Outer), [Outer.a, Outer.b, Outer.Inner], ) def test_enum_with_value_name(self): class Huh(Enum): name = 1 value = 2 self.assertEqual(list(Huh), [Huh.name, Huh.value]) self.assertIs(type(Huh.name), Huh) self.assertEqual(Huh.name.name, 'name') self.assertEqual(Huh.name.value, 1) def test_contains_name_and_value_overlap(self): class IntEnum1(IntEnum): X = 1 class IntEnum2(IntEnum): X = 1 class IntEnum3(IntEnum): X = 2 class IntEnum4(IntEnum): Y = 1 self.assertIn(IntEnum1.X, IntEnum1) self.assertIn(IntEnum1.X, IntEnum2) self.assertNotIn(IntEnum1.X, IntEnum3) self.assertIn(IntEnum1.X, IntEnum4) def test_contains_different_types_same_members(self): class IntEnum1(IntEnum): X = 1 class IntFlag1(IntFlag): X = 1 self.assertIn(IntEnum1.X, IntFlag1) self.assertIn(IntFlag1.X, IntEnum1) def test_inherited_data_type(self): class HexInt(int): __qualname__ = 'HexInt' def __repr__(self): return hex(self) class MyEnum(HexInt, enum.Enum): __qualname__ = 'MyEnum' A = 1 B = 2 C = 3 self.assertEqual(repr(MyEnum.A), '') globals()['HexInt'] = HexInt globals()['MyEnum'] = MyEnum test_pickle_dump_load(self.assertIs, MyEnum.A) test_pickle_dump_load(self.assertIs, MyEnum) # class SillyInt(HexInt): __qualname__ = 'SillyInt' class MyOtherEnum(SillyInt, enum.Enum): __qualname__ = 'MyOtherEnum' D = 4 E = 5 F = 6 self.assertIs(MyOtherEnum._member_type_, SillyInt) globals()['SillyInt'] = SillyInt globals()['MyOtherEnum'] = MyOtherEnum test_pickle_dump_load(self.assertIs, MyOtherEnum.E) test_pickle_dump_load(self.assertIs, MyOtherEnum) # # This did not work in 3.10, but does now with pickling by name class UnBrokenInt(int): __qualname__ = 'UnBrokenInt' def __new__(cls, value): return int.__new__(cls, value) class MyUnBrokenEnum(UnBrokenInt, Enum): __qualname__ = 'MyUnBrokenEnum' G = 7 H = 8 I = 9 self.assertIs(MyUnBrokenEnum._member_type_, UnBrokenInt) self.assertIs(MyUnBrokenEnum(7), MyUnBrokenEnum.G) globals()['UnBrokenInt'] = UnBrokenInt globals()['MyUnBrokenEnum'] = MyUnBrokenEnum test_pickle_dump_load(self.assertIs, MyUnBrokenEnum.I) test_pickle_dump_load(self.assertIs, MyUnBrokenEnum) @reraise_if_not_enum(FloatStooges) def test_floatenum_fromhex(self): h = float.hex(FloatStooges.MOE.value) self.assertIs(FloatStooges.fromhex(h), FloatStooges.MOE) h = float.hex(FloatStooges.MOE.value + 0.01) with self.assertRaises(ValueError): FloatStooges.fromhex(h) def test_programmatic_function_type(self): MinorEnum = Enum('MinorEnum', 'june july august', type=int) lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) for i, month in enumerate('june july august'.split(), 1): e = MinorEnum(i) self.assertEqual(e, i) self.assertEqual(e.name, month) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) def test_programmatic_function_string_with_start(self): MinorEnum = Enum('MinorEnum', 'june july august', start=10) lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) for i, month in enumerate('june july august'.split(), 10): e = MinorEnum(i) self.assertEqual(int(e.value), i) self.assertNotEqual(e, i) self.assertEqual(e.name, month) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) def test_programmatic_function_type_with_start(self): MinorEnum = Enum('MinorEnum', 'june july august', type=int, start=30) lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) for i, month in enumerate('june july august'.split(), 30): e = MinorEnum(i) self.assertEqual(e, i) self.assertEqual(e.name, month) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) def test_programmatic_function_string_list_with_start(self): MinorEnum = Enum('MinorEnum', ['june', 'july', 'august'], start=20) lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) for i, month in enumerate('june july august'.split(), 20): e = MinorEnum(i) self.assertEqual(int(e.value), i) self.assertNotEqual(e, i) self.assertEqual(e.name, month) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) def test_programmatic_function_type_from_subclass(self): MinorEnum = IntEnum('MinorEnum', 'june july august') lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) for i, month in enumerate('june july august'.split(), 1): e = MinorEnum(i) self.assertEqual(e, i) self.assertEqual(e.name, month) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) def test_programmatic_function_type_from_subclass_with_start(self): MinorEnum = IntEnum('MinorEnum', 'june july august', start=40) lst = list(MinorEnum) self.assertEqual(len(lst), len(MinorEnum)) self.assertEqual(len(MinorEnum), 3, MinorEnum) self.assertEqual( [MinorEnum.june, MinorEnum.july, MinorEnum.august], lst, ) for i, month in enumerate('june july august'.split(), 40): e = MinorEnum(i) self.assertEqual(e, i) self.assertEqual(e.name, month) self.assertIn(e, MinorEnum) self.assertIs(type(e), MinorEnum) def test_programmatic_function_is_value_call(self): class TwoPart(Enum): ONE = 1, 1.0 TWO = 2, 2.0 THREE = 3, 3.0 self.assertRaisesRegex(ValueError, '1 is not a valid .*TwoPart', TwoPart, 1) self.assertIs(TwoPart((1, 1.0)), TwoPart.ONE) self.assertIs(TwoPart(1, 1.0), TwoPart.ONE) class ThreePart(Enum): ONE = 1, 1.0, 'one' TWO = 2, 2.0, 'two' THREE = 3, 3.0, 'three' self.assertIs(ThreePart((3, 3.0, 'three')), ThreePart.THREE) self.assertIs(ThreePart(3, 3.0, 'three'), ThreePart.THREE) @reraise_if_not_enum(IntStooges) def test_intenum_from_bytes(self): self.assertIs(IntStooges.from_bytes(b'\x00\x03', 'big'), IntStooges.MOE) with self.assertRaises(ValueError): IntStooges.from_bytes(b'\x00\x05', 'big') def test_reserved_sunder_error(self): with self.assertRaisesRegex( ValueError, '_sunder_ names, such as ._bad_., are reserved', ): class Bad(Enum): _bad_ = 1 def test_too_many_data_types(self): with self.assertRaisesRegex(TypeError, 'too many data types'): class Huh(str, int, Enum): One = 1 class MyStr(str): def hello(self): return 'hello, %s' % self class MyInt(int): def repr(self): return hex(self) with self.assertRaisesRegex(TypeError, 'too many data types'): class Huh(MyStr, MyInt, Enum): One = 1 @reraise_if_not_enum(Stooges) def test_pickle_enum(self): test_pickle_dump_load(self.assertIs, Stooges.CURLY) test_pickle_dump_load(self.assertIs, Stooges) @reraise_if_not_enum(IntStooges) def test_pickle_int(self): test_pickle_dump_load(self.assertIs, IntStooges.CURLY) test_pickle_dump_load(self.assertIs, IntStooges) @reraise_if_not_enum(FloatStooges) def test_pickle_float(self): test_pickle_dump_load(self.assertIs, FloatStooges.CURLY) test_pickle_dump_load(self.assertIs, FloatStooges) @reraise_if_not_enum(Answer) def test_pickle_enum_function(self): test_pickle_dump_load(self.assertIs, Answer.him) test_pickle_dump_load(self.assertIs, Answer) @reraise_if_not_enum(Question) def test_pickle_enum_function_with_module(self): test_pickle_dump_load(self.assertIs, Question.who) test_pickle_dump_load(self.assertIs, Question) def test_pickle_nested_class(self): # would normally just have this directly in the class namespace class NestedEnum(Enum): twigs = 'common' shiny = 'rare' self.__class__.NestedEnum = NestedEnum self.NestedEnum.__qualname__ = '%s.NestedEnum' % self.__class__.__name__ test_pickle_dump_load(self.assertIs, self.NestedEnum.twigs) def test_pickle_by_name(self): class ReplaceGlobalInt(IntEnum): ONE = 1 TWO = 2 ReplaceGlobalInt.__reduce_ex__ = enum._reduce_ex_by_global_name for proto in range(HIGHEST_PROTOCOL): self.assertEqual(ReplaceGlobalInt.TWO.__reduce_ex__(proto), 'TWO') def test_pickle_explodes(self): BadPickle = Enum( 'BadPickle', 'dill sweet bread-n-butter', module=__name__) globals()['BadPickle'] = BadPickle # now break BadPickle to test exception raising enum._make_class_unpicklable(BadPickle) test_pickle_exception(self.assertRaises, TypeError, BadPickle.dill) test_pickle_exception(self.assertRaises, PicklingError, BadPickle) def test_string_enum(self): class SkillLevel(str, Enum): master = 'what is the sound of one hand clapping?' journeyman = 'why did the chicken cross the road?' apprentice = 'knock, knock!' self.assertEqual(SkillLevel.apprentice, 'knock, knock!') def test_getattr_getitem(self): class Period(Enum): morning = 1 noon = 2 evening = 3 night = 4 self.assertIs(Period(2), Period.noon) self.assertIs(getattr(Period, 'night'), Period.night) self.assertIs(Period['morning'], Period.morning) def test_getattr_dunder(self): Season = self.Season self.assertTrue(getattr(Season, '__eq__')) def test_iteration_order(self): class Season(Enum): SUMMER = 2 WINTER = 4 AUTUMN = 3 SPRING = 1 self.assertEqual( list(Season), [Season.SUMMER, Season.WINTER, Season.AUTUMN, Season.SPRING], ) @reraise_if_not_enum(Name) def test_subclassing(self): self.assertEqual(Name.BDFL, 'Guido van Rossum') self.assertTrue(Name.BDFL, Name('Guido van Rossum')) self.assertIs(Name.BDFL, getattr(Name, 'BDFL')) test_pickle_dump_load(self.assertIs, Name.BDFL) def test_extending(self): class Color(Enum): red = 1 green = 2 blue = 3 # with self.assertRaises(TypeError): class MoreColor(Color): cyan = 4 magenta = 5 yellow = 6 # with self.assertRaisesRegex(TypeError, " cannot extend "): class EvenMoreColor(Color, IntEnum): chartruese = 7 # with self.assertRaisesRegex(ValueError, r"\(.Foo., \(.pink., .black.\)\) is not a valid .*Color"): Color('Foo', ('pink', 'black')) def test_exclude_methods(self): class whatever(Enum): this = 'that' these = 'those' def really(self): return 'no, not %s' % self.value self.assertIsNot(type(whatever.really), whatever) self.assertEqual(whatever.this.really(), 'no, not that') def test_wrong_inheritance_order(self): with self.assertRaises(TypeError): class Wrong(Enum, str): NotHere = 'error before this point' def test_raise_custom_error_on_creation(self): class InvalidRgbColorError(ValueError): def __init__(self, r, g, b): self.r = r self.g = g self.b = b super().__init__(f'({r}, {g}, {b}) is not a valid RGB color') with self.assertRaises(InvalidRgbColorError): class RgbColor(Enum): RED = (255, 0, 0) GREEN = (0, 255, 0) BLUE = (0, 0, 255) INVALID = (256, 0, 0) def __init__(self, r, g, b): if not all(0 <= val <= 255 for val in (r, g, b)): raise InvalidRgbColorError(r, g, b) def test_intenum_transitivity(self): class number(IntEnum): one = 1 two = 2 three = 3 class numero(IntEnum): uno = 1 dos = 2 tres = 3 self.assertEqual(number.one, numero.uno) self.assertEqual(number.two, numero.dos) self.assertEqual(number.three, numero.tres) def test_wrong_enum_in_call(self): class Monochrome(Enum): black = 0 white = 1 class Gender(Enum): male = 0 female = 1 self.assertRaises(ValueError, Monochrome, Gender.male) def test_wrong_enum_in_mixed_call(self): class Monochrome(IntEnum): black = 0 white = 1 class Gender(Enum): male = 0 female = 1 self.assertRaises(ValueError, Monochrome, Gender.male) def test_mixed_enum_in_call_1(self): class Monochrome(IntEnum): black = 0 white = 1 class Gender(IntEnum): male = 0 female = 1 self.assertIs(Monochrome(Gender.female), Monochrome.white) def test_mixed_enum_in_call_2(self): class Monochrome(Enum): black = 0 white = 1 class Gender(IntEnum): male = 0 female = 1 self.assertIs(Monochrome(Gender.male), Monochrome.black) def test_flufl_enum(self): class Fluflnum(Enum): def __int__(self): return int(self.value) class MailManOptions(Fluflnum): option1 = 1 option2 = 2 option3 = 3 self.assertEqual(int(MailManOptions.option1), 1) def test_introspection(self): class Number(IntEnum): one = 100 two = 200 self.assertIs(Number.one._member_type_, int) self.assertIs(Number._member_type_, int) class String(str, Enum): yarn = 'soft' rope = 'rough' wire = 'hard' self.assertIs(String.yarn._member_type_, str) self.assertIs(String._member_type_, str) class Plain(Enum): vanilla = 'white' one = 1 self.assertIs(Plain.vanilla._member_type_, object) self.assertIs(Plain._member_type_, object) def test_no_such_enum_member(self): class Color(Enum): red = 1 green = 2 blue = 3 with self.assertRaises(ValueError): Color(4) with self.assertRaises(KeyError): Color['chartreuse'] # tests that need to be evalualted for moving def test_multiple_mixin_mro(self): class auto_enum(type(Enum)): def __new__(metacls, cls, bases, classdict): temp = type(classdict)() temp._cls_name = cls names = set(classdict._member_names) i = 0 for k in classdict._member_names: v = classdict[k] if v is Ellipsis: v = i else: i = v i += 1 temp[k] = v for k, v in classdict.items(): if k not in names: temp[k] = v return super(auto_enum, metacls).__new__( metacls, cls, bases, temp) class AutoNumberedEnum(Enum, metaclass=auto_enum): pass class AutoIntEnum(IntEnum, metaclass=auto_enum): pass class TestAutoNumber(AutoNumberedEnum): a = ... b = 3 c = ... class TestAutoInt(AutoIntEnum): a = ... b = 3 c = ... def test_subclasses_with_getnewargs(self): class NamedInt(int): __qualname__ = 'NamedInt' # needed for pickle protocol 4 def __new__(cls, *args): _args = args name, *args = args if len(args) == 0: raise TypeError("name and value must be specified") self = int.__new__(cls, *args) self._intname = name self._args = _args return self def __getnewargs__(self): return self._args @bltns.property def __name__(self): return self._intname def __repr__(self): # repr() is updated to include the name and type info return "{}({!r}, {})".format( type(self).__name__, self.__name__, int.__repr__(self), ) def __str__(self): # str() is unchanged, even if it relies on the repr() fallback base = int base_str = base.__str__ if base_str.__objclass__ is object: return base.__repr__(self) return base_str(self) # for simplicity, we only define one operator that # propagates expressions def __add__(self, other): temp = int(self) + int( other) if isinstance(self, NamedInt) and isinstance(other, NamedInt): return NamedInt( '({0} + {1})'.format(self.__name__, other.__name__), temp, ) else: return temp class NEI(NamedInt, Enum): __qualname__ = 'NEI' # needed for pickle protocol 4 x = ('the-x', 1) y = ('the-y', 2) self.assertIs(NEI.__new__, Enum.__new__) self.assertEqual(repr(NEI.x + NEI.y), "NamedInt('(the-x + the-y)', 3)") globals()['NamedInt'] = NamedInt globals()['NEI'] = NEI NI5 = NamedInt('test', 5) self.assertEqual(NI5, 5) test_pickle_dump_load(self.assertEqual, NI5, 5) self.assertEqual(NEI.y.value, 2) test_pickle_dump_load(self.assertIs, NEI.y) test_pickle_dump_load(self.assertIs, NEI) def test_subclasses_with_getnewargs_ex(self): class NamedInt(int): __qualname__ = 'NamedInt' # needed for pickle protocol 4 def __new__(cls, *args): _args = args name, *args = args if len(args) == 0: raise TypeError("name and value must be specified") self = int.__new__(cls, *args) self._intname = name self._args = _args return self def __getnewargs_ex__(self): return self._args, {} @bltns.property def __name__(self): return self._intname def __repr__(self): # repr() is updated to include the name and type info return "{}({!r}, {})".format( type(self).__name__, self.__name__, int.__repr__(self), ) def __str__(self): # str() is unchanged, even if it relies on the repr() fallback base = int base_str = base.__str__ if base_str.__objclass__ is object: return base.__repr__(self) return base_str(self) # for simplicity, we only define one operator that # propagates expressions def __add__(self, other): temp = int(self) + int( other) if isinstance(self, NamedInt) and isinstance(other, NamedInt): return NamedInt( '({0} + {1})'.format(self.__name__, other.__name__), temp, ) else: return temp class NEI(NamedInt, Enum): __qualname__ = 'NEI' # needed for pickle protocol 4 x = ('the-x', 1) y = ('the-y', 2) self.assertIs(NEI.__new__, Enum.__new__) self.assertEqual(repr(NEI.x + NEI.y), "NamedInt('(the-x + the-y)', 3)") globals()['NamedInt'] = NamedInt globals()['NEI'] = NEI NI5 = NamedInt('test', 5) self.assertEqual(NI5, 5) test_pickle_dump_load(self.assertEqual, NI5, 5) self.assertEqual(NEI.y.value, 2) test_pickle_dump_load(self.assertIs, NEI.y) test_pickle_dump_load(self.assertIs, NEI) def test_subclasses_with_reduce(self): class NamedInt(int): __qualname__ = 'NamedInt' # needed for pickle protocol 4 def __new__(cls, *args): _args = args name, *args = args if len(args) == 0: raise TypeError("name and value must be specified") self = int.__new__(cls, *args) self._intname = name self._args = _args return self def __reduce__(self): return self.__class__, self._args @bltns.property def __name__(self): return self._intname def __repr__(self): # repr() is updated to include the name and type info return "{}({!r}, {})".format( type(self).__name__, self.__name__, int.__repr__(self), ) def __str__(self): # str() is unchanged, even if it relies on the repr() fallback base = int base_str = base.__str__ if base_str.__objclass__ is object: return base.__repr__(self) return base_str(self) # for simplicity, we only define one operator that # propagates expressions def __add__(self, other): temp = int(self) + int( other) if isinstance(self, NamedInt) and isinstance(other, NamedInt): return NamedInt( '({0} + {1})'.format(self.__name__, other.__name__), temp, ) else: return temp class NEI(NamedInt, Enum): __qualname__ = 'NEI' # needed for pickle protocol 4 x = ('the-x', 1) y = ('the-y', 2) self.assertIs(NEI.__new__, Enum.__new__) self.assertEqual(repr(NEI.x + NEI.y), "NamedInt('(the-x + the-y)', 3)") globals()['NamedInt'] = NamedInt globals()['NEI'] = NEI NI5 = NamedInt('test', 5) self.assertEqual(NI5, 5) test_pickle_dump_load(self.assertEqual, NI5, 5) self.assertEqual(NEI.y.value, 2) test_pickle_dump_load(self.assertIs, NEI.y) test_pickle_dump_load(self.assertIs, NEI) def test_subclasses_with_reduce_ex(self): class NamedInt(int): __qualname__ = 'NamedInt' # needed for pickle protocol 4 def __new__(cls, *args): _args = args name, *args = args if len(args) == 0: raise TypeError("name and value must be specified") self = int.__new__(cls, *args) self._intname = name self._args = _args return self def __reduce_ex__(self, proto): return self.__class__, self._args @bltns.property def __name__(self): return self._intname def __repr__(self): # repr() is updated to include the name and type info return "{}({!r}, {})".format( type(self).__name__, self.__name__, int.__repr__(self), ) def __str__(self): # str() is unchanged, even if it relies on the repr() fallback base = int base_str = base.__str__ if base_str.__objclass__ is object: return base.__repr__(self) return base_str(self) # for simplicity, we only define one operator that # propagates expressions def __add__(self, other): temp = int(self) + int( other) if isinstance(self, NamedInt) and isinstance(other, NamedInt): return NamedInt( '({0} + {1})'.format(self.__name__, other.__name__), temp, ) else: return temp class NEI(NamedInt, Enum): __qualname__ = 'NEI' # needed for pickle protocol 4 x = ('the-x', 1) y = ('the-y', 2) self.assertIs(NEI.__new__, Enum.__new__) self.assertEqual(repr(NEI.x + NEI.y), "NamedInt('(the-x + the-y)', 3)") globals()['NamedInt'] = NamedInt globals()['NEI'] = NEI NI5 = NamedInt('test', 5) self.assertEqual(NI5, 5) test_pickle_dump_load(self.assertEqual, NI5, 5) self.assertEqual(NEI.y.value, 2) test_pickle_dump_load(self.assertIs, NEI.y) test_pickle_dump_load(self.assertIs, NEI) def test_subclasses_without_direct_pickle_support(self): class NamedInt(int): __qualname__ = 'NamedInt' def __new__(cls, *args): _args = args name, *args = args if len(args) == 0: raise TypeError("name and value must be specified") self = int.__new__(cls, *args) self._intname = name self._args = _args return self @bltns.property def __name__(self): return self._intname def __repr__(self): # repr() is updated to include the name and type info return "{}({!r}, {})".format( type(self).__name__, self.__name__, int.__repr__(self), ) def __str__(self): # str() is unchanged, even if it relies on the repr() fallback base = int base_str = base.__str__ if base_str.__objclass__ is object: return base.__repr__(self) return base_str(self) # for simplicity, we only define one operator that # propagates expressions def __add__(self, other): temp = int(self) + int( other) if isinstance(self, NamedInt) and isinstance(other, NamedInt): return NamedInt( '({0} + {1})'.format(self.__name__, other.__name__), temp ) else: return temp class NEI(NamedInt, Enum): __qualname__ = 'NEI' x = ('the-x', 1) y = ('the-y', 2) self.assertIs(NEI.__new__, Enum.__new__) self.assertEqual(repr(NEI.x + NEI.y), "NamedInt('(the-x + the-y)', 3)") globals()['NamedInt'] = NamedInt globals()['NEI'] = NEI NI5 = NamedInt('test', 5) self.assertEqual(NI5, 5) self.assertEqual(NEI.y.value, 2) with self.assertRaisesRegex(TypeError, "name and value must be specified"): test_pickle_dump_load(self.assertIs, NEI.y) # fix pickle support and try again NEI.__reduce_ex__ = enum.pickle_by_enum_name test_pickle_dump_load(self.assertIs, NEI.y) test_pickle_dump_load(self.assertIs, NEI) def test_subclasses_with_direct_pickle_support(self): class NamedInt(int): __qualname__ = 'NamedInt' def __new__(cls, *args): _args = args name, *args = args if len(args) == 0: raise TypeError("name and value must be specified") self = int.__new__(cls, *args) self._intname = name self._args = _args return self @bltns.property def __name__(self): return self._intname def __repr__(self): # repr() is updated to include the name and type info return "{}({!r}, {})".format( type(self).__name__, self.__name__, int.__repr__(self), ) def __str__(self): # str() is unchanged, even if it relies on the repr() fallback base = int base_str = base.__str__ if base_str.__objclass__ is object: return base.__repr__(self) return base_str(self) # for simplicity, we only define one operator that # propagates expressions def __add__(self, other): temp = int(self) + int( other) if isinstance(self, NamedInt) and isinstance(other, NamedInt): return NamedInt( '({0} + {1})'.format(self.__name__, other.__name__), temp, ) else: return temp class NEI(NamedInt, Enum): __qualname__ = 'NEI' x = ('the-x', 1) y = ('the-y', 2) def __reduce_ex__(self, proto): return getattr, (self.__class__, self._name_) self.assertIs(NEI.__new__, Enum.__new__) self.assertEqual(repr(NEI.x + NEI.y), "NamedInt('(the-x + the-y)', 3)") globals()['NamedInt'] = NamedInt globals()['NEI'] = NEI NI5 = NamedInt('test', 5) self.assertEqual(NI5, 5) self.assertEqual(NEI.y.value, 2) test_pickle_dump_load(self.assertIs, NEI.y) test_pickle_dump_load(self.assertIs, NEI) def test_tuple_subclass(self): class SomeTuple(tuple, Enum): __qualname__ = 'SomeTuple' # needed for pickle protocol 4 first = (1, 'for the money') second = (2, 'for the show') third = (3, 'for the music') self.assertIs(type(SomeTuple.first), SomeTuple) self.assertIsInstance(SomeTuple.second, tuple) self.assertEqual(SomeTuple.third, (3, 'for the music')) globals()['SomeTuple'] = SomeTuple test_pickle_dump_load(self.assertIs, SomeTuple.first) def test_tuple_subclass_with_auto_1(self): from collections import namedtuple T = namedtuple('T', 'index desc') class SomeEnum(T, Enum): __qualname__ = 'SomeEnum' # needed for pickle protocol 4 first = auto(), 'for the money' second = auto(), 'for the show' third = auto(), 'for the music' self.assertIs(type(SomeEnum.first), SomeEnum) self.assertEqual(SomeEnum.third.value, (3, 'for the music')) self.assertIsInstance(SomeEnum.third.value, T) self.assertEqual(SomeEnum.first.index, 1) self.assertEqual(SomeEnum.second.desc, 'for the show') globals()['SomeEnum'] = SomeEnum globals()['T'] = T test_pickle_dump_load(self.assertIs, SomeEnum.first) def test_tuple_subclass_with_auto_2(self): from collections import namedtuple T = namedtuple('T', 'index desc') class SomeEnum(Enum): __qualname__ = 'SomeEnum' # needed for pickle protocol 4 first = T(auto(), 'for the money') second = T(auto(), 'for the show') third = T(auto(), 'for the music') self.assertIs(type(SomeEnum.first), SomeEnum) self.assertEqual(SomeEnum.third.value, (3, 'for the music')) self.assertIsInstance(SomeEnum.third.value, T) self.assertEqual(SomeEnum.first.value.index, 1) self.assertEqual(SomeEnum.second.value.desc, 'for the show') globals()['SomeEnum'] = SomeEnum globals()['T'] = T test_pickle_dump_load(self.assertIs, SomeEnum.first) def test_duplicate_values_give_unique_enum_items(self): class AutoNumber(Enum): first = () second = () third = () def __new__(cls): value = len(cls.__members__) + 1 obj = object.__new__(cls) obj._value_ = value return obj def __int__(self): return int(self._value_) self.assertEqual( list(AutoNumber), [AutoNumber.first, AutoNumber.second, AutoNumber.third], ) self.assertEqual(int(AutoNumber.second), 2) self.assertEqual(AutoNumber.third.value, 3) self.assertIs(AutoNumber(1), AutoNumber.first) def test_inherited_new_from_enhanced_enum(self): class AutoNumber(Enum): def __new__(cls): value = len(cls.__members__) + 1 obj = object.__new__(cls) obj._value_ = value return obj def __int__(self): return int(self._value_) class Color(AutoNumber): red = () green = () blue = () self.assertEqual(list(Color), [Color.red, Color.green, Color.blue]) self.assertEqual(list(map(int, Color)), [1, 2, 3]) def test_inherited_new_from_mixed_enum(self): class AutoNumber(IntEnum): def __new__(cls): value = len(cls.__members__) + 1 obj = int.__new__(cls, value) obj._value_ = value return obj class Color(AutoNumber): red = () green = () blue = () self.assertEqual(list(Color), [Color.red, Color.green, Color.blue]) self.assertEqual(list(map(int, Color)), [1, 2, 3]) def test_equality(self): class OrdinaryEnum(Enum): a = 1 self.assertEqual(ALWAYS_EQ, OrdinaryEnum.a) self.assertEqual(OrdinaryEnum.a, ALWAYS_EQ) def test_ordered_mixin(self): class OrderedEnum(Enum): def __ge__(self, other): if self.__class__ is other.__class__: return self._value_ >= other._value_ return NotImplemented def __gt__(self, other): if self.__class__ is other.__class__: return self._value_ > other._value_ return NotImplemented def __le__(self, other): if self.__class__ is other.__class__: return self._value_ <= other._value_ return NotImplemented def __lt__(self, other): if self.__class__ is other.__class__: return self._value_ < other._value_ return NotImplemented class Grade(OrderedEnum): A = 5 B = 4 C = 3 D = 2 F = 1 self.assertGreater(Grade.A, Grade.B) self.assertLessEqual(Grade.F, Grade.C) self.assertLess(Grade.D, Grade.A) self.assertGreaterEqual(Grade.B, Grade.B) self.assertEqual(Grade.B, Grade.B) self.assertNotEqual(Grade.C, Grade.D) def test_extending2(self): class Shade(Enum): def shade(self): print(self.name) class Color(Shade): red = 1 green = 2 blue = 3 with self.assertRaises(TypeError): class MoreColor(Color): cyan = 4 magenta = 5 yellow = 6 def test_extending3(self): class Shade(Enum): def shade(self): return self.name class Color(Shade): def hex(self): return '%s hexlified!' % self.value class MoreColor(Color): cyan = 4 magenta = 5 yellow = 6 self.assertEqual(MoreColor.magenta.hex(), '5 hexlified!') def test_subclass_duplicate_name(self): class Base(Enum): def test(self): pass class Test(Base): test = 1 self.assertIs(type(Test.test), Test) def test_subclass_duplicate_name_dynamic(self): from types import DynamicClassAttribute class Base(Enum): @DynamicClassAttribute def test(self): return 'dynamic' class Test(Base): test = 1 self.assertEqual(Test.test.test, 'dynamic') self.assertEqual(Test.test.value, 1) class Base2(Enum): @enum.property def flash(self): return 'flashy dynamic' class Test(Base2): flash = 1 self.assertEqual(Test.flash.flash, 'flashy dynamic') self.assertEqual(Test.flash.value, 1) def test_no_duplicates(self): class UniqueEnum(Enum): def __init__(self, *args): cls = self.__class__ if any(self.value == e.value for e in cls): a = self.name e = cls(self.value).name raise ValueError( "aliases not allowed in UniqueEnum: %r --> %r" % (a, e) ) class Color(UniqueEnum): red = 1 green = 2 blue = 3 with self.assertRaises(ValueError): class Color(UniqueEnum): red = 1 green = 2 blue = 3 grene = 2 def test_init(self): class Planet(Enum): MERCURY = (3.303e+23, 2.4397e6) VENUS = (4.869e+24, 6.0518e6) EARTH = (5.976e+24, 6.37814e6) MARS = (6.421e+23, 3.3972e6) JUPITER = (1.9e+27, 7.1492e7) SATURN = (5.688e+26, 6.0268e7) URANUS = (8.686e+25, 2.5559e7) NEPTUNE = (1.024e+26, 2.4746e7) def __init__(self, mass, radius): self.mass = mass # in kilograms self.radius = radius # in meters @enum.property def surface_gravity(self): # universal gravitational constant (m3 kg-1 s-2) G = 6.67300E-11 return G * self.mass / (self.radius * self.radius) self.assertEqual(round(Planet.EARTH.surface_gravity, 2), 9.80) self.assertEqual(Planet.EARTH.value, (5.976e+24, 6.37814e6)) def test_ignore(self): class Period(timedelta, Enum): ''' different lengths of time ''' def __new__(cls, value, period): obj = timedelta.__new__(cls, value) obj._value_ = value obj.period = period return obj _ignore_ = 'Period i' Period = vars() for i in range(13): Period['month_%d' % i] = i*30, 'month' for i in range(53): Period['week_%d' % i] = i*7, 'week' for i in range(32): Period['day_%d' % i] = i, 'day' OneDay = day_1 OneWeek = week_1 OneMonth = month_1 self.assertFalse(hasattr(Period, '_ignore_')) self.assertFalse(hasattr(Period, 'Period')) self.assertFalse(hasattr(Period, 'i')) self.assertTrue(isinstance(Period.day_1, timedelta)) self.assertTrue(Period.month_1 is Period.day_30) self.assertTrue(Period.week_4 is Period.day_28) def test_nonhash_value(self): class AutoNumberInAList(Enum): def __new__(cls): value = [len(cls.__members__) + 1] obj = object.__new__(cls) obj._value_ = value return obj class ColorInAList(AutoNumberInAList): red = () green = () blue = () self.assertEqual(list(ColorInAList), [ColorInAList.red, ColorInAList.green, ColorInAList.blue]) for enum, value in zip(ColorInAList, range(3)): value += 1 self.assertEqual(enum.value, [value]) self.assertIs(ColorInAList([value]), enum) def test_conflicting_types_resolved_in_new(self): class LabelledIntEnum(int, Enum): def __new__(cls, *args): value, label = args obj = int.__new__(cls, value) obj.label = label obj._value_ = value return obj class LabelledList(LabelledIntEnum): unprocessed = (1, "Unprocessed") payment_complete = (2, "Payment Complete") self.assertEqual(list(LabelledList), [LabelledList.unprocessed, LabelledList.payment_complete]) self.assertEqual(LabelledList.unprocessed, 1) self.assertEqual(LabelledList(1), LabelledList.unprocessed) def test_default_missing_no_chained_exception(self): class Color(Enum): RED = 1 GREEN = 2 BLUE = 3 try: Color(7) except ValueError as exc: self.assertTrue(exc.__context__ is None) else: raise Exception('Exception not raised.') def test_missing_override(self): class Color(Enum): red = 1 green = 2 blue = 3 @classmethod def _missing_(cls, item): if item == 'three': return cls.blue elif item == 'bad return': # trigger internal error return 5 elif item == 'error out': raise ZeroDivisionError else: # trigger not found return None self.assertIs(Color('three'), Color.blue) try: Color(7) except ValueError as exc: self.assertTrue(exc.__context__ is None) else: raise Exception('Exception not raised.') try: Color('bad return') except TypeError as exc: self.assertTrue(isinstance(exc.__context__, ValueError)) else: raise Exception('Exception not raised.') try: Color('error out') except ZeroDivisionError as exc: self.assertTrue(isinstance(exc.__context__, ValueError)) else: raise Exception('Exception not raised.') def test_missing_exceptions_reset(self): import gc import weakref # class TestEnum(enum.Enum): VAL1 = 'val1' VAL2 = 'val2' # class Class1: def __init__(self): # Gracefully handle an exception of our own making try: raise ValueError() except ValueError: pass # class Class2: def __init__(self): # Gracefully handle an exception of Enum's making try: TestEnum('invalid_value') except ValueError: pass # No strong refs here so these are free to die. class_1_ref = weakref.ref(Class1()) class_2_ref = weakref.ref(Class2()) # # The exception raised by Enum used to create a reference loop and thus # Class2 instances would stick around until the next garbage collection # cycle, unlike Class1. Verify Class2 no longer does this. gc.collect() # For PyPy or other GCs. self.assertIs(class_1_ref(), None) self.assertIs(class_2_ref(), None) def test_multiple_mixin(self): class MaxMixin: @classproperty def MAX(cls): max = len(cls) cls.MAX = max return max class StrMixin: def __str__(self): return self._name_.lower() class SomeEnum(Enum): def behavior(self): return 'booyah' class AnotherEnum(Enum): def behavior(self): return 'nuhuh!' def social(self): return "what's up?" class Color(MaxMixin, Enum): RED = auto() GREEN = auto() BLUE = auto() self.assertEqual(Color.RED.value, 1) self.assertEqual(Color.GREEN.value, 2) self.assertEqual(Color.BLUE.value, 3) self.assertEqual(Color.MAX, 3) self.assertEqual(str(Color.BLUE), 'Color.BLUE') class Color(MaxMixin, StrMixin, Enum): RED = auto() GREEN = auto() BLUE = auto() __str__ = StrMixin.__str__ # needed as of 3.11 self.assertEqual(Color.RED.value, 1) self.assertEqual(Color.GREEN.value, 2) self.assertEqual(Color.BLUE.value, 3) self.assertEqual(Color.MAX, 3) self.assertEqual(str(Color.BLUE), 'blue') class Color(StrMixin, MaxMixin, Enum): RED = auto() GREEN = auto() BLUE = auto() __str__ = StrMixin.__str__ # needed as of 3.11 self.assertEqual(Color.RED.value, 1) self.assertEqual(Color.GREEN.value, 2) self.assertEqual(Color.BLUE.value, 3) self.assertEqual(Color.MAX, 3) self.assertEqual(str(Color.BLUE), 'blue') class CoolColor(StrMixin, SomeEnum, Enum): RED = auto() GREEN = auto() BLUE = auto() __str__ = StrMixin.__str__ # needed as of 3.11 self.assertEqual(CoolColor.RED.value, 1) self.assertEqual(CoolColor.GREEN.value, 2) self.assertEqual(CoolColor.BLUE.value, 3) self.assertEqual(str(CoolColor.BLUE), 'blue') self.assertEqual(CoolColor.RED.behavior(), 'booyah') class CoolerColor(StrMixin, AnotherEnum, Enum): RED = auto() GREEN = auto() BLUE = auto() __str__ = StrMixin.__str__ # needed as of 3.11 self.assertEqual(CoolerColor.RED.value, 1) self.assertEqual(CoolerColor.GREEN.value, 2) self.assertEqual(CoolerColor.BLUE.value, 3) self.assertEqual(str(CoolerColor.BLUE), 'blue') self.assertEqual(CoolerColor.RED.behavior(), 'nuhuh!') self.assertEqual(CoolerColor.RED.social(), "what's up?") class CoolestColor(StrMixin, SomeEnum, AnotherEnum): RED = auto() GREEN = auto() BLUE = auto() __str__ = StrMixin.__str__ # needed as of 3.11 self.assertEqual(CoolestColor.RED.value, 1) self.assertEqual(CoolestColor.GREEN.value, 2) self.assertEqual(CoolestColor.BLUE.value, 3) self.assertEqual(str(CoolestColor.BLUE), 'blue') self.assertEqual(CoolestColor.RED.behavior(), 'booyah') self.assertEqual(CoolestColor.RED.social(), "what's up?") class ConfusedColor(StrMixin, AnotherEnum, SomeEnum): RED = auto() GREEN = auto() BLUE = auto() __str__ = StrMixin.__str__ # needed as of 3.11 self.assertEqual(ConfusedColor.RED.value, 1) self.assertEqual(ConfusedColor.GREEN.value, 2) self.assertEqual(ConfusedColor.BLUE.value, 3) self.assertEqual(str(ConfusedColor.BLUE), 'blue') self.assertEqual(ConfusedColor.RED.behavior(), 'nuhuh!') self.assertEqual(ConfusedColor.RED.social(), "what's up?") class ReformedColor(StrMixin, IntEnum, SomeEnum, AnotherEnum): RED = auto() GREEN = auto() BLUE = auto() __str__ = StrMixin.__str__ # needed as of 3.11 self.assertEqual(ReformedColor.RED.value, 1) self.assertEqual(ReformedColor.GREEN.value, 2) self.assertEqual(ReformedColor.BLUE.value, 3) self.assertEqual(str(ReformedColor.BLUE), 'blue') self.assertEqual(ReformedColor.RED.behavior(), 'booyah') self.assertEqual(ConfusedColor.RED.social(), "what's up?") self.assertTrue(issubclass(ReformedColor, int)) def test_multiple_inherited_mixin(self): @unique class Decision1(StrEnum): REVERT = "REVERT" REVERT_ALL = "REVERT_ALL" RETRY = "RETRY" class MyEnum(StrEnum): pass @unique class Decision2(MyEnum): REVERT = "REVERT" REVERT_ALL = "REVERT_ALL" RETRY = "RETRY" def test_multiple_mixin_inherited(self): class MyInt(int): def __new__(cls, value): return super().__new__(cls, value) class HexMixin: def __repr__(self): return hex(self) class MyIntEnum(HexMixin, MyInt, enum.Enum): __repr__ = HexMixin.__repr__ class Foo(MyIntEnum): TEST = 1 self.assertTrue(isinstance(Foo.TEST, MyInt)) self.assertEqual(Foo._member_type_, MyInt) self.assertEqual(repr(Foo.TEST), "0x1") class Fee(MyIntEnum): TEST = 1 def __new__(cls, value): value += 1 member = int.__new__(cls, value) member._value_ = value return member self.assertEqual(Fee.TEST, 2) def test_multiple_mixin_with_common_data_type(self): class CaseInsensitiveStrEnum(str, Enum): @classmethod def _missing_(cls, value): for member in cls._member_map_.values(): if member._value_.lower() == value.lower(): return member return super()._missing_(value) # class LenientStrEnum(str, Enum): def __init__(self, *args): self._valid = True @classmethod def _missing_(cls, value): unknown = cls._member_type_.__new__(cls, value) unknown._valid = False unknown._name_ = value.upper() unknown._value_ = value cls._member_map_[value] = unknown return unknown @enum.property def valid(self): return self._valid # class JobStatus(CaseInsensitiveStrEnum, LenientStrEnum): ACTIVE = "active" PENDING = "pending" TERMINATED = "terminated" # JS = JobStatus self.assertEqual(list(JobStatus), [JS.ACTIVE, JS.PENDING, JS.TERMINATED]) self.assertEqual(JS.ACTIVE, 'active') self.assertEqual(JS.ACTIVE.value, 'active') self.assertIs(JS('Active'), JS.ACTIVE) self.assertTrue(JS.ACTIVE.valid) missing = JS('missing') self.assertEqual(list(JobStatus), [JS.ACTIVE, JS.PENDING, JS.TERMINATED]) self.assertEqual(JS.ACTIVE, 'active') self.assertEqual(JS.ACTIVE.value, 'active') self.assertIs(JS('Active'), JS.ACTIVE) self.assertTrue(JS.ACTIVE.valid) self.assertTrue(isinstance(missing, JS)) self.assertFalse(missing.valid) def test_empty_globals(self): # bpo-35717: sys._getframe(2).f_globals['__name__'] fails with KeyError # when using compile and exec because f_globals is empty code = "from enum import Enum; Enum('Animal', 'ANT BEE CAT DOG')" code = compile(code, "", "exec") global_ns = {} local_ls = {} exec(code, global_ns, local_ls) def test_strenum(self): class GoodStrEnum(StrEnum): one = '1' two = '2' three = b'3', 'ascii' four = b'4', 'latin1', 'strict' self.assertEqual(GoodStrEnum.one, '1') self.assertEqual(str(GoodStrEnum.one), '1') self.assertEqual('{}'.format(GoodStrEnum.one), '1') self.assertEqual(GoodStrEnum.one, str(GoodStrEnum.one)) self.assertEqual(GoodStrEnum.one, '{}'.format(GoodStrEnum.one)) self.assertEqual(repr(GoodStrEnum.one), "") # class DumbMixin: def __str__(self): return "don't do this" class DumbStrEnum(DumbMixin, StrEnum): five = '5' six = '6' seven = '7' __str__ = DumbMixin.__str__ # needed as of 3.11 self.assertEqual(DumbStrEnum.seven, '7') self.assertEqual(str(DumbStrEnum.seven), "don't do this") # class EnumMixin(Enum): def hello(self): print('hello from %s' % (self, )) class HelloEnum(EnumMixin, StrEnum): eight = '8' self.assertEqual(HelloEnum.eight, '8') self.assertEqual(HelloEnum.eight, str(HelloEnum.eight)) # class GoodbyeMixin: def goodbye(self): print('%s wishes you a fond farewell') class GoodbyeEnum(GoodbyeMixin, EnumMixin, StrEnum): nine = '9' self.assertEqual(GoodbyeEnum.nine, '9') self.assertEqual(GoodbyeEnum.nine, str(GoodbyeEnum.nine)) # with self.assertRaisesRegex(TypeError, '1 is not a string'): class FirstFailedStrEnum(StrEnum): one = 1 two = '2' with self.assertRaisesRegex(TypeError, "2 is not a string"): class SecondFailedStrEnum(StrEnum): one = '1' two = 2, three = '3' with self.assertRaisesRegex(TypeError, '2 is not a string'): class ThirdFailedStrEnum(StrEnum): one = '1' two = 2 with self.assertRaisesRegex(TypeError, 'encoding must be a string, not %r' % (sys.getdefaultencoding, )): class ThirdFailedStrEnum(StrEnum): one = '1' two = b'2', sys.getdefaultencoding with self.assertRaisesRegex(TypeError, 'errors must be a string, not 9'): class ThirdFailedStrEnum(StrEnum): one = '1' two = b'2', 'ascii', 9 def test_custom_strenum(self): class CustomStrEnum(str, Enum): pass class OkayEnum(CustomStrEnum): one = '1' two = '2' three = b'3', 'ascii' four = b'4', 'latin1', 'strict' self.assertEqual(OkayEnum.one, '1') self.assertEqual(str(OkayEnum.one), 'OkayEnum.one') self.assertEqual('{}'.format(OkayEnum.one), 'OkayEnum.one') self.assertEqual(repr(OkayEnum.one), "") # class DumbMixin: def __str__(self): return "don't do this" class DumbStrEnum(DumbMixin, CustomStrEnum): five = '5' six = '6' seven = '7' __str__ = DumbMixin.__str__ # needed as of 3.11 self.assertEqual(DumbStrEnum.seven, '7') self.assertEqual(str(DumbStrEnum.seven), "don't do this") # class EnumMixin(Enum): def hello(self): print('hello from %s' % (self, )) class HelloEnum(EnumMixin, CustomStrEnum): eight = '8' self.assertEqual(HelloEnum.eight, '8') self.assertEqual(str(HelloEnum.eight), 'HelloEnum.eight') # class GoodbyeMixin: def goodbye(self): print('%s wishes you a fond farewell') class GoodbyeEnum(GoodbyeMixin, EnumMixin, CustomStrEnum): nine = '9' self.assertEqual(GoodbyeEnum.nine, '9') self.assertEqual(str(GoodbyeEnum.nine), 'GoodbyeEnum.nine') # class FirstFailedStrEnum(CustomStrEnum): one = 1 # this will become '1' two = '2' class SecondFailedStrEnum(CustomStrEnum): one = '1' two = 2, # this will become '2' three = '3' class ThirdFailedStrEnum(CustomStrEnum): one = '1' two = 2 # this will become '2' with self.assertRaisesRegex(TypeError, r"argument (2|'encoding') must be str, not "): class ThirdFailedStrEnum(CustomStrEnum): one = '1' two = b'2', sys.getdefaultencoding with self.assertRaisesRegex(TypeError, r"argument (3|'errors') must be str, not "): class ThirdFailedStrEnum(CustomStrEnum): one = '1' two = b'2', 'ascii', 9 def test_missing_value_error(self): with self.assertRaisesRegex(TypeError, "_value_ not set in __new__"): class Combined(str, Enum): # def __new__(cls, value, sequence): enum = str.__new__(cls, value) if '(' in value: fis_name, segment = value.split('(', 1) segment = segment.strip(' )') else: fis_name = value segment = None enum.fis_name = fis_name enum.segment = segment enum.sequence = sequence return enum # def __repr__(self): return "<%s.%s>" % (self.__class__.__name__, self._name_) # key_type = 'An$(1,2)', 0 company_id = 'An$(3,2)', 1 code = 'An$(5,1)', 2 description = 'Bn$', 3 def test_private_variable_is_normal_attribute(self): class Private(Enum): __corporal = 'Radar' __major_ = 'Hoolihan' self.assertEqual(Private._Private__corporal, 'Radar') self.assertEqual(Private._Private__major_, 'Hoolihan') def test_member_from_member_access(self): class Di(Enum): YES = 1 NO = 0 name = 3 warn = Di.YES.NO self.assertIs(warn, Di.NO) self.assertIs(Di.name, Di['name']) self.assertEqual(Di.name.name, 'name') def test_dynamic_members_with_static_methods(self): # foo_defines = {'FOO_CAT': 'aloof', 'BAR_DOG': 'friendly', 'FOO_HORSE': 'big'} class Foo(Enum): vars().update({ k: v for k, v in foo_defines.items() if k.startswith('FOO_') }) def upper(self): return self.value.upper() self.assertEqual(list(Foo), [Foo.FOO_CAT, Foo.FOO_HORSE]) self.assertEqual(Foo.FOO_CAT.value, 'aloof') self.assertEqual(Foo.FOO_HORSE.upper(), 'BIG') # with self.assertRaisesRegex(TypeError, "'FOO_CAT' already defined as 'aloof'"): class FooBar(Enum): vars().update({ k: v for k, v in foo_defines.items() if k.startswith('FOO_') }, **{'FOO_CAT': 'small'}, ) def upper(self): return self.value.upper() def test_repr_with_dataclass(self): "ensure dataclass-mixin has correct repr()" # # check overridden dataclass __repr__ is used # from dataclasses import dataclass, field @dataclass(repr=False) class Foo: __qualname__ = 'Foo' a: int def __repr__(self): return 'ha hah!' class Entries(Foo, Enum): ENTRY1 = 1 self.assertEqual(repr(Entries.ENTRY1), '') self.assertTrue(Entries.ENTRY1.value == Foo(1), Entries.ENTRY1.value) self.assertTrue(isinstance(Entries.ENTRY1, Foo)) self.assertTrue(Entries._member_type_ is Foo, Entries._member_type_) # # check auto-generated dataclass __repr__ is not used # @dataclass class CreatureDataMixin: __qualname__ = 'CreatureDataMixin' size: str legs: int tail: bool = field(repr=False, default=True) class Creature(CreatureDataMixin, Enum): __qualname__ = 'Creature' BEETLE = ('small', 6) DOG = ('medium', 4) self.assertEqual(repr(Creature.DOG), "") # # check inherited repr used # class Huh: def __repr__(self): return 'inherited' @dataclass(repr=False) class CreatureDataMixin(Huh): __qualname__ = 'CreatureDataMixin' size: str legs: int tail: bool = field(repr=False, default=True) class Creature(CreatureDataMixin, Enum): __qualname__ = 'Creature' BEETLE = ('small', 6) DOG = ('medium', 4) self.assertEqual(repr(Creature.DOG), "") # # check default object.__repr__ used if nothing provided # @dataclass(repr=False) class CreatureDataMixin: __qualname__ = 'CreatureDataMixin' size: str legs: int tail: bool = field(repr=False, default=True) class Creature(CreatureDataMixin, Enum): __qualname__ = 'Creature' BEETLE = ('small', 6) DOG = ('medium', 4) self.assertRegex(repr(Creature.DOG), "") def test_repr_with_init_mixin(self): class Foo: def __init__(self, a): self.a = a def __repr__(self): return f'Foo(a={self.a!r})' class Entries(Foo, Enum): ENTRY1 = 1 # self.assertEqual(repr(Entries.ENTRY1), 'Foo(a=1)') def test_repr_and_str_with_no_init_mixin(self): # non-data_type is a mixin that doesn't define __new__ class Foo: def __repr__(self): return 'Foo' def __str__(self): return 'ooF' class Entries(Foo, Enum): ENTRY1 = 1 # self.assertEqual(repr(Entries.ENTRY1), 'Foo') self.assertEqual(str(Entries.ENTRY1), 'ooF') def test_value_backup_assign(self): # check that enum will add missing values when custom __new__ does not class Some(Enum): def __new__(cls, val): return object.__new__(cls) x = 1 y = 2 self.assertEqual(Some.x.value, 1) self.assertEqual(Some.y.value, 2) def test_custom_flag_bitwise(self): class MyIntFlag(int, Flag): ONE = 1 TWO = 2 FOUR = 4 self.assertTrue(isinstance(MyIntFlag.ONE | MyIntFlag.TWO, MyIntFlag), MyIntFlag.ONE | MyIntFlag.TWO) self.assertTrue(isinstance(MyIntFlag.ONE | 2, MyIntFlag)) def test_int_flags_copy(self): class MyIntFlag(IntFlag): ONE = 1 TWO = 2 FOUR = 4 flags = MyIntFlag.ONE | MyIntFlag.TWO copied = copy.copy(flags) deep = copy.deepcopy(flags) self.assertEqual(copied, flags) self.assertEqual(deep, flags) flags = MyIntFlag.ONE | MyIntFlag.TWO | 8 copied = copy.copy(flags) deep = copy.deepcopy(flags) self.assertEqual(copied, flags) self.assertEqual(deep, flags) self.assertEqual(copied.value, 1 | 2 | 8) def test_namedtuple_as_value(self): from collections import namedtuple TTuple = namedtuple('TTuple', 'id a blist') class NTEnum(Enum): NONE = TTuple(0, 0, []) A = TTuple(1, 2, [4]) B = TTuple(2, 4, [0, 1, 2]) self.assertEqual(repr(NTEnum.NONE), "") self.assertEqual(NTEnum.NONE.value, TTuple(id=0, a=0, blist=[])) self.assertEqual( [x.value for x in NTEnum], [TTuple(id=0, a=0, blist=[]), TTuple(id=1, a=2, blist=[4]), TTuple(id=2, a=4, blist=[0, 1, 2])], ) self.assertRaises(AttributeError, getattr, NTEnum.NONE, 'id') # class NTCEnum(TTuple, Enum): NONE = 0, 0, [] A = 1, 2, [4] B = 2, 4, [0, 1, 2] self.assertEqual(repr(NTCEnum.NONE), "") self.assertEqual(NTCEnum.NONE.value, TTuple(id=0, a=0, blist=[])) self.assertEqual(NTCEnum.NONE.id, 0) self.assertEqual(NTCEnum.A.a, 2) self.assertEqual(NTCEnum.B.blist, [0, 1 ,2]) self.assertEqual( [x.value for x in NTCEnum], [TTuple(id=0, a=0, blist=[]), TTuple(id=1, a=2, blist=[4]), TTuple(id=2, a=4, blist=[0, 1, 2])], ) # class NTDEnum(Enum): def __new__(cls, id, a, blist): member = object.__new__(cls) member.id = id member.a = a member.blist = blist return member NONE = TTuple(0, 0, []) A = TTuple(1, 2, [4]) B = TTuple(2, 4, [0, 1, 2]) self.assertEqual(repr(NTDEnum.NONE), "") self.assertEqual(NTDEnum.NONE.id, 0) self.assertEqual(NTDEnum.A.a, 2) self.assertEqual(NTDEnum.B.blist, [0, 1 ,2]) def test_flag_with_custom_new(self): class FlagFromChar(IntFlag): def __new__(cls, c): value = 1 << c self = int.__new__(cls, value) self._value_ = value return self # a = ord('a') # self.assertEqual(FlagFromChar._all_bits_, 316912650057057350374175801343) self.assertEqual(FlagFromChar._flag_mask_, 158456325028528675187087900672) self.assertEqual(FlagFromChar.a, 158456325028528675187087900672) self.assertEqual(FlagFromChar.a|1, 158456325028528675187087900673) # # class FlagFromChar(Flag): def __new__(cls, c): value = 1 << c self = object.__new__(cls) self._value_ = value return self # a = ord('a') z = 1 # self.assertEqual(FlagFromChar._all_bits_, 316912650057057350374175801343) self.assertEqual(FlagFromChar._flag_mask_, 158456325028528675187087900674) self.assertEqual(FlagFromChar.a.value, 158456325028528675187087900672) self.assertEqual((FlagFromChar.a|FlagFromChar.z).value, 158456325028528675187087900674) # # class FlagFromChar(int, Flag, boundary=KEEP): def __new__(cls, c): value = 1 << c self = int.__new__(cls, value) self._value_ = value return self # a = ord('a') # self.assertEqual(FlagFromChar._all_bits_, 316912650057057350374175801343) self.assertEqual(FlagFromChar._flag_mask_, 158456325028528675187087900672) self.assertEqual(FlagFromChar.a, 158456325028528675187087900672) self.assertEqual(FlagFromChar.a|1, 158456325028528675187087900673) def test_init_exception(self): class Base: def __new__(cls, *args): return object.__new__(cls) def __init__(self, x): raise ValueError("I don't like", x) with self.assertRaises(TypeError): class MyEnum(Base, enum.Enum): A = 'a' def __init__(self, y): self.y = y with self.assertRaises(ValueError): class MyEnum(Base, enum.Enum): A = 'a' def __init__(self, y): self.y = y def __new__(cls, value): member = Base.__new__(cls) member._value_ = Base(value) return member def test_extra_member_creation(self): class IDEnumMeta(EnumMeta): def __new__(metacls, cls, bases, classdict, **kwds): # add new entries to classdict for name in classdict.member_names: classdict[f'{name}_DESC'] = f'-{classdict[name]}' return super().__new__(metacls, cls, bases, classdict, **kwds) class IDEnum(StrEnum, metaclass=IDEnumMeta): pass class MyEnum(IDEnum): ID = 'id' NAME = 'name' self.assertEqual(list(MyEnum), [MyEnum.ID, MyEnum.NAME, MyEnum.ID_DESC, MyEnum.NAME_DESC]) def test_add_alias(self): class mixin: @property def ORG(self): return 'huh' class Color(mixin, Enum): RED = 1 GREEN = 2 BLUE = 3 Color.RED._add_alias_('ROJO') self.assertIs(Color.RED, Color['ROJO']) self.assertIs(Color.RED, Color.ROJO) Color.BLUE._add_alias_('ORG') self.assertIs(Color.BLUE, Color['ORG']) self.assertIs(Color.BLUE, Color.ORG) self.assertEqual(Color.RED.ORG, 'huh') self.assertEqual(Color.GREEN.ORG, 'huh') self.assertEqual(Color.BLUE.ORG, 'huh') self.assertEqual(Color.ORG.ORG, 'huh') def test_add_value_alias_after_creation(self): class Color(Enum): RED = 1 GREEN = 2 BLUE = 3 Color.RED._add_value_alias_(5) self.assertIs(Color.RED, Color(5)) def test_add_value_alias_during_creation(self): class Types(Enum): Unknown = 0, Source = 1, 'src' NetList = 2, 'nl' def __new__(cls, int_value, *value_aliases): member = object.__new__(cls) member._value_ = int_value for alias in value_aliases: member._add_value_alias_(alias) return member self.assertIs(Types(0), Types.Unknown) self.assertIs(Types(1), Types.Source) self.assertIs(Types('src'), Types.Source) 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, 'has no members', ): Enum(7) with self.assertRaisesRegex( TypeError, 'has no members', ): Flag(7) def test_empty_names(self): for nothing in '', [], {}: for e_type in None, int: empty_enum = Enum('empty_enum', nothing, type=e_type) self.assertEqual(len(empty_enum), 0) self.assertRaisesRegex(TypeError, 'has no members', empty_enum, 0) self.assertRaisesRegex(TypeError, '.int. object is not iterable', Enum, 'bad_enum', names=0) self.assertRaisesRegex(TypeError, '.int. object is not iterable', Enum, 'bad_enum', 0, type=int) def test_nonhashable_matches_hashable(self): # issue 125710 class Directions(Enum): DOWN_ONLY = frozenset({"sc"}) UP_ONLY = frozenset({"cs"}) UNRESTRICTED = frozenset({"sc", "cs"}) self.assertIs(Directions({"sc"}), Directions.DOWN_ONLY) class TestOrder(unittest.TestCase): "test usage of the `_order_` attribute" def test_same_members(self): class Color(Enum): _order_ = 'red green blue' red = 1 green = 2 blue = 3 def test_same_members_with_aliases(self): class Color(Enum): _order_ = 'red green blue' red = 1 green = 2 blue = 3 verde = green def test_same_members_wrong_order(self): with self.assertRaisesRegex(TypeError, 'member order does not match _order_'): class Color(Enum): _order_ = 'red green blue' red = 1 blue = 3 green = 2 def test_order_has_extra_members(self): with self.assertRaisesRegex(TypeError, 'member order does not match _order_'): class Color(Enum): _order_ = 'red green blue purple' red = 1 green = 2 blue = 3 def test_order_has_extra_members_with_aliases(self): with self.assertRaisesRegex(TypeError, 'member order does not match _order_'): class Color(Enum): _order_ = 'red green blue purple' red = 1 green = 2 blue = 3 verde = green def test_enum_has_extra_members(self): with self.assertRaisesRegex(TypeError, 'member order does not match _order_'): class Color(Enum): _order_ = 'red green blue' red = 1 green = 2 blue = 3 purple = 4 def test_enum_has_extra_members_with_aliases(self): with self.assertRaisesRegex(TypeError, 'member order does not match _order_'): class Color(Enum): _order_ = 'red green blue' red = 1 green = 2 blue = 3 purple = 4 verde = green class OldTestFlag(unittest.TestCase): """Tests of the Flags.""" class Perm(Flag): R, W, X = 4, 2, 1 class Open(Flag): RO = 0 WO = 1 RW = 2 AC = 3 CE = 1<<19 class Color(Flag): BLACK = 0 RED = 1 ROJO = 1 GREEN = 2 BLUE = 4 PURPLE = RED|BLUE WHITE = RED|GREEN|BLUE BLANCO = RED|GREEN|BLUE def test_or(self): Perm = self.Perm for i in Perm: for j in Perm: self.assertEqual((i | j), Perm(i.value | j.value)) self.assertEqual((i | j).value, i.value | j.value) self.assertIs(type(i | j), Perm) for i in Perm: self.assertIs(i | i, i) Open = self.Open self.assertIs(Open.RO | Open.CE, Open.CE) def test_and(self): Perm = self.Perm RW = Perm.R | Perm.W RX = Perm.R | Perm.X WX = Perm.W | Perm.X RWX = Perm.R | Perm.W | Perm.X values = list(Perm) + [RW, RX, WX, RWX, Perm(0)] for i in values: for j in values: self.assertEqual((i & j).value, i.value & j.value) self.assertIs(type(i & j), Perm) for i in Perm: self.assertIs(i & i, i) self.assertIs(i & RWX, i) self.assertIs(RWX & i, i) Open = self.Open self.assertIs(Open.RO & Open.CE, Open.RO) def test_xor(self): Perm = self.Perm for i in Perm: for j in Perm: self.assertEqual((i ^ j).value, i.value ^ j.value) self.assertIs(type(i ^ j), Perm) for i in Perm: self.assertIs(i ^ Perm(0), i) self.assertIs(Perm(0) ^ i, i) Open = self.Open self.assertIs(Open.RO ^ Open.CE, Open.CE) self.assertIs(Open.CE ^ Open.CE, Open.RO) def test_bool(self): Perm = self.Perm for f in Perm: self.assertTrue(f) Open = self.Open for f in Open: self.assertEqual(bool(f.value), bool(f)) def test_boundary(self): self.assertIs(enum.Flag._boundary_, STRICT) class Iron(Flag, boundary=CONFORM): ONE = 1 TWO = 2 EIGHT = 8 self.assertIs(Iron._boundary_, CONFORM) # class Water(Flag, boundary=STRICT): ONE = 1 TWO = 2 EIGHT = 8 self.assertIs(Water._boundary_, STRICT) # class Space(Flag, boundary=EJECT): ONE = 1 TWO = 2 EIGHT = 8 self.assertIs(Space._boundary_, EJECT) # class Bizarre(Flag, boundary=KEEP): b = 3 c = 4 d = 6 # self.assertRaisesRegex(ValueError, 'invalid value 7', Water, 7) # self.assertIs(Iron(7), Iron.ONE|Iron.TWO) self.assertIs(Iron(~9), Iron.TWO) # self.assertEqual(Space(7), 7) self.assertTrue(type(Space(7)) is int) # self.assertEqual(list(Bizarre), [Bizarre.c]) self.assertIs(Bizarre(3), Bizarre.b) self.assertIs(Bizarre(6), Bizarre.d) # class SkipFlag(enum.Flag): A = 1 B = 2 C = 4 | B # self.assertTrue(SkipFlag.C in (SkipFlag.A|SkipFlag.C)) self.assertRaisesRegex(ValueError, 'SkipFlag.. invalid value 42', SkipFlag, 42) # class SkipIntFlag(enum.IntFlag): A = 1 B = 2 C = 4 | B # self.assertTrue(SkipIntFlag.C in (SkipIntFlag.A|SkipIntFlag.C)) self.assertEqual(SkipIntFlag(42).value, 42) # class MethodHint(Flag): HiddenText = 0x10 DigitsOnly = 0x01 LettersOnly = 0x02 OnlyMask = 0x0f # self.assertEqual(str(MethodHint.HiddenText|MethodHint.OnlyMask), 'MethodHint.HiddenText|DigitsOnly|LettersOnly|OnlyMask') def test_iter(self): Color = self.Color Open = self.Open self.assertEqual(list(Color), [Color.RED, Color.GREEN, Color.BLUE]) self.assertEqual(list(Open), [Open.WO, Open.RW, Open.CE]) def test_programatic_function_string(self): Perm = Flag('Perm', 'R W X') lst = list(Perm) self.assertEqual(len(lst), len(Perm)) self.assertEqual(len(Perm), 3, Perm) self.assertEqual(lst, [Perm.R, Perm.W, Perm.X]) for i, n in enumerate('R W X'.split()): v = 1<: 3>') self.assertEqual(str(simple), '3') def test_iter(self): Color = self.Color Open = self.Open self.assertEqual(list(Color), [Color.RED, Color.GREEN, Color.BLUE]) self.assertEqual(list(Open), [Open.WO, Open.RW, Open.CE]) def test_programatic_function_string(self): Perm = IntFlag('Perm', 'R W X') lst = list(Perm) self.assertEqual(len(lst), len(Perm)) self.assertEqual(len(Perm), 3, Perm) self.assertEqual(lst, [Perm.R, Perm.W, Perm.X]) for i, n in enumerate('R W X'.split()): v = 1<= (3, 13), 'mixed types with auto() no longer supported', ) def test_auto_garbage_ok(self): with self.assertWarnsRegex(DeprecationWarning, 'will require all values to be sortable'): class Color(Enum): red = 'red' blue = auto() self.assertEqual(Color.blue.value, 1) @unittest.skipIf( python_version >= (3, 13), 'mixed types with auto() no longer supported', ) def test_auto_garbage_corrected_ok(self): with self.assertWarnsRegex(DeprecationWarning, 'will require all values to be sortable'): class Color(Enum): red = 'red' blue = 2 green = auto() self.assertEqual(list(Color), [Color.red, Color.blue, Color.green]) self.assertEqual(Color.red.value, 'red') self.assertEqual(Color.blue.value, 2) self.assertEqual(Color.green.value, 3) @unittest.skipIf( python_version < (3, 13), 'mixed types with auto() will raise in 3.13', ) def test_auto_garbage_fail(self): with self.assertRaisesRegex(TypeError, "unable to increment 'red'"): class Color(Enum): red = 'red' blue = auto() @unittest.skipIf( python_version < (3, 13), 'mixed types with auto() will raise in 3.13', ) def test_auto_garbage_corrected_fail(self): with self.assertRaisesRegex(TypeError, 'unable to sort non-numeric values'): class Color(Enum): red = 'red' blue = 2 green = auto() 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_auto_order_wierd(self): weird_auto = auto() weird_auto.value = 'pathological case' class Color(Enum): red = weird_auto def _generate_next_value_(name, start, count, last): return name blue = auto() self.assertEqual(list(Color), [Color.red, Color.blue]) self.assertEqual(Color.red.value, 'pathological case') self.assertEqual(Color.blue.value, 'blue') @unittest.skipIf( python_version < (3, 13), 'auto() will return highest value + 1 in 3.13', ) def test_auto_with_aliases(self): class Color(Enum): red = auto() blue = auto() oxford = blue crimson = red green = auto() self.assertIs(Color.crimson, Color.red) self.assertIs(Color.oxford, Color.blue) self.assertIsNot(Color.green, Color.red) self.assertIsNot(Color.green, Color.blue) def test_duplicate_auto(self): class Dupes(Enum): first = primero = auto() second = auto() third = auto() self.assertEqual([Dupes.first, Dupes.second, Dupes.third], list(Dupes)) def test_multiple_auto_on_line(self): class Huh(Enum): ONE = auto() TWO = auto(), auto() THREE = auto(), auto(), auto() self.assertEqual(Huh.ONE.value, 1) self.assertEqual(Huh.TWO.value, (2, 3)) self.assertEqual(Huh.THREE.value, (4, 5, 6)) # class Hah(Enum): def __new__(cls, value, abbr=None): member = object.__new__(cls) member._value_ = value member.abbr = abbr or value[:3].lower() return member def _generate_next_value_(name, start, count, last): return name # MONDAY = auto() TUESDAY = auto() WEDNESDAY = auto(), 'WED' THURSDAY = auto(), 'Thu' FRIDAY = auto() self.assertEqual(Hah.MONDAY.value, 'MONDAY') self.assertEqual(Hah.MONDAY.abbr, 'mon') self.assertEqual(Hah.TUESDAY.value, 'TUESDAY') self.assertEqual(Hah.TUESDAY.abbr, 'tue') self.assertEqual(Hah.WEDNESDAY.value, 'WEDNESDAY') self.assertEqual(Hah.WEDNESDAY.abbr, 'WED') self.assertEqual(Hah.THURSDAY.value, 'THURSDAY') self.assertEqual(Hah.THURSDAY.abbr, 'Thu') self.assertEqual(Hah.FRIDAY.value, 'FRIDAY') self.assertEqual(Hah.FRIDAY.abbr, 'fri') # class Huh(Enum): def _generate_next_value_(name, start, count, last): return count+1 ONE = auto() TWO = auto(), auto() THREE = auto(), auto(), auto() self.assertEqual(Huh.ONE.value, 1) self.assertEqual(Huh.TWO.value, (2, 2)) self.assertEqual(Huh.THREE.value, (3, 3, 3)) expected_help_output_with_docs = """\ Help on class Color in module %s: class Color(enum.Enum) | Color(*values) | | Method resolution order: | Color | enum.Enum | builtins.object | | Data and other attributes defined here: | | CYAN = | | MAGENTA = | | YELLOW = | | ---------------------------------------------------------------------- | Data descriptors inherited from enum.Enum: | | name | The name of the Enum member. | | value | The value of the Enum member. | | ---------------------------------------------------------------------- | Static methods inherited from enum.EnumType: | | __contains__(value) | Return True if `value` is in `cls`. | | `value` is in `cls` if: | 1) `value` is a member of `cls`, or | 2) `value` is the value of one of the `cls`'s members. | | __getitem__(name) | Return the member matching `name`. | | __iter__() | Return members in definition order. | | __len__() | Return the number of members (no aliases) | | ---------------------------------------------------------------------- | Readonly properties inherited from enum.EnumType: | | __members__ | Returns a mapping of member name->value. | | This mapping lists all enum members, including aliases. Note that this | is a read-only view of the internal mapping.""" expected_help_output_without_docs = """\ Help on class Color in module %s: class Color(enum.Enum) | Color(*values) | | Method resolution order: | Color | enum.Enum | builtins.object | | Data and other attributes defined here: | | CYAN = | | MAGENTA = | | YELLOW = | | ---------------------------------------------------------------------- | Data descriptors inherited from enum.Enum: | | name | | value | | ---------------------------------------------------------------------- | Static methods inherited from enum.EnumType: | | __contains__(value) | | __getitem__(name) | | __iter__() | | __len__() | | ---------------------------------------------------------------------- | Readonly properties inherited from enum.EnumType: | | __members__""" class TestStdLib(unittest.TestCase): maxDiff = None class Color(Enum): CYAN = 1 MAGENTA = 2 YELLOW = 3 def test_pydoc(self): # indirectly test __objclass__ if StrEnum.__doc__ is None: expected_text = expected_help_output_without_docs % __name__ else: expected_text = expected_help_output_with_docs % __name__ output = StringIO() helper = pydoc.Helper(output=output) helper(self.Color) result = output.getvalue().strip() self.assertEqual(result, expected_text, result) def test_inspect_getmembers(self): values = dict(( ('__class__', EnumType), ('__doc__', '...'), ('__members__', self.Color.__members__), ('__module__', __name__), ('YELLOW', self.Color.YELLOW), ('MAGENTA', self.Color.MAGENTA), ('CYAN', self.Color.CYAN), ('name', Enum.__dict__['name']), ('value', Enum.__dict__['value']), ('__len__', self.Color.__len__), ('__contains__', self.Color.__contains__), ('__name__', 'Color'), ('__getitem__', self.Color.__getitem__), ('__qualname__', 'TestStdLib.Color'), ('__init_subclass__', getattr(self.Color, '__init_subclass__')), ('__iter__', self.Color.__iter__), )) result = dict(inspect.getmembers(self.Color)) self.assertEqual(set(values.keys()), set(result.keys())) failed = False for k in values.keys(): if k == '__doc__': # __doc__ is huge, not comparing continue if result[k] != values[k]: print() print('\n%s\n key: %s\n result: %s\nexpected: %s\n%s\n' % ('=' * 75, k, result[k], values[k], '=' * 75), sep='') failed = True if failed: self.fail("result does not equal expected, see print above") def test_inspect_classify_class_attrs(self): # indirectly test __objclass__ from inspect import Attribute values = [ Attribute(name='__class__', kind='data', defining_class=object, object=EnumType), Attribute(name='__contains__', kind='method', defining_class=EnumType, object=self.Color.__contains__), Attribute(name='__doc__', kind='data', defining_class=self.Color, object='...'), Attribute(name='__getitem__', kind='method', defining_class=EnumType, object=self.Color.__getitem__), Attribute(name='__iter__', kind='method', defining_class=EnumType, object=self.Color.__iter__), Attribute(name='__init_subclass__', kind='class method', defining_class=object, object=getattr(self.Color, '__init_subclass__')), Attribute(name='__len__', kind='method', defining_class=EnumType, object=self.Color.__len__), Attribute(name='__members__', kind='property', defining_class=EnumType, object=EnumType.__members__), Attribute(name='__module__', kind='data', defining_class=self.Color, object=__name__), Attribute(name='__name__', kind='data', defining_class=self.Color, object='Color'), Attribute(name='__qualname__', kind='data', defining_class=self.Color, object='TestStdLib.Color'), Attribute(name='YELLOW', kind='data', defining_class=self.Color, object=self.Color.YELLOW), Attribute(name='MAGENTA', kind='data', defining_class=self.Color, object=self.Color.MAGENTA), Attribute(name='CYAN', kind='data', defining_class=self.Color, object=self.Color.CYAN), Attribute(name='name', kind='data', defining_class=Enum, object=Enum.__dict__['name']), Attribute(name='value', kind='data', defining_class=Enum, object=Enum.__dict__['value']), ] for v in values: try: v.name except AttributeError: print(v) values.sort(key=lambda item: item.name) result = list(inspect.classify_class_attrs(self.Color)) result.sort(key=lambda item: item.name) self.assertEqual( len(values), len(result), "%s != %s" % ([a.name for a in values], [a.name for a in result]) ) failed = False for v, r in zip(values, result): if r.name in ('__init_subclass__', '__doc__'): # not sure how to make the __init_subclass_ Attributes match # so as long as there is one, call it good # __doc__ is too big to check exactly, so treat the same as __init_subclass__ for name in ('name','kind','defining_class'): if getattr(v, name) != getattr(r, name): print('\n%s\n%s\n%s\n%s\n' % ('=' * 75, r, v, '=' * 75), sep='') failed = True elif r != v: print('\n%s\n%s\n%s\n%s\n' % ('=' * 75, r, v, '=' * 75), sep='') failed = True if failed: self.fail("result does not equal expected, see print above") def test_inspect_signatures(self): from inspect import signature, Signature, Parameter self.assertEqual( signature(Enum), Signature([ Parameter('new_class_name', Parameter.POSITIONAL_ONLY), Parameter('names', Parameter.POSITIONAL_OR_KEYWORD), Parameter('module', Parameter.KEYWORD_ONLY, default=None), Parameter('qualname', Parameter.KEYWORD_ONLY, default=None), Parameter('type', Parameter.KEYWORD_ONLY, default=None), Parameter('start', Parameter.KEYWORD_ONLY, default=1), Parameter('boundary', Parameter.KEYWORD_ONLY, default=None), ]), ) self.assertEqual( signature(enum.FlagBoundary), Signature([ Parameter('values', Parameter.VAR_POSITIONAL), ]), ) def test_test_simple_enum(self): @_simple_enum(Enum) class SimpleColor: CYAN = 1 MAGENTA = 2 YELLOW = 3 @bltns.property def zeroth(self): return 'zeroed %s' % self.name class CheckedColor(Enum): CYAN = 1 MAGENTA = 2 YELLOW = 3 @bltns.property def zeroth(self): return 'zeroed %s' % self.name _test_simple_enum(CheckedColor, SimpleColor) SimpleColor.MAGENTA._value_ = 9 self.assertRaisesRegex( TypeError, "enum mismatch", _test_simple_enum, CheckedColor, SimpleColor, ) # # class CheckedMissing(IntFlag, boundary=KEEP): SIXTY_FOUR = 64 ONE_TWENTY_EIGHT = 128 TWENTY_FORTY_EIGHT = 2048 ALL = 2048 + 128 + 64 + 12 CM = CheckedMissing self.assertEqual(list(CheckedMissing), [CM.SIXTY_FOUR, CM.ONE_TWENTY_EIGHT, CM.TWENTY_FORTY_EIGHT]) # @_simple_enum(IntFlag, boundary=KEEP) class Missing: SIXTY_FOUR = 64 ONE_TWENTY_EIGHT = 128 TWENTY_FORTY_EIGHT = 2048 ALL = 2048 + 128 + 64 + 12 M = Missing self.assertEqual(list(CheckedMissing), [M.SIXTY_FOUR, M.ONE_TWENTY_EIGHT, M.TWENTY_FORTY_EIGHT]) _test_simple_enum(CheckedMissing, Missing) # # class CheckedUnhashable(Enum): ONE = dict() TWO = set() name = 'python' self.assertIn(dict(), CheckedUnhashable) self.assertIn('python', CheckedUnhashable) self.assertEqual(CheckedUnhashable.name.value, 'python') self.assertEqual(CheckedUnhashable.name.name, 'name') # @_simple_enum() class Unhashable: ONE = dict() TWO = set() name = 'python' self.assertIn(dict(), Unhashable) self.assertIn('python', Unhashable) self.assertEqual(Unhashable.name.value, 'python') self.assertEqual(Unhashable.name.name, 'name') _test_simple_enum(CheckedUnhashable, Unhashable) ## class CheckedComplexStatus(IntEnum): def __new__(cls, value, phrase, description=''): obj = int.__new__(cls, value) obj._value_ = value obj.phrase = phrase obj.description = description return obj CONTINUE = 100, 'Continue', 'Request received, please continue' PROCESSING = 102, 'Processing' EARLY_HINTS = 103, 'Early Hints' SOME_HINTS = 103, 'Some Early Hints' # @_simple_enum(IntEnum) class ComplexStatus: def __new__(cls, value, phrase, description=''): obj = int.__new__(cls, value) obj._value_ = value obj.phrase = phrase obj.description = description return obj CONTINUE = 100, 'Continue', 'Request received, please continue' PROCESSING = 102, 'Processing' EARLY_HINTS = 103, 'Early Hints' SOME_HINTS = 103, 'Some Early Hints' _test_simple_enum(CheckedComplexStatus, ComplexStatus) # # class CheckedComplexFlag(IntFlag): def __new__(cls, value, label): obj = int.__new__(cls, value) obj._value_ = value obj.label = label return obj SHIRT = 1, 'upper half' VEST = 1, 'outer upper half' PANTS = 2, 'lower half' self.assertIs(CheckedComplexFlag.SHIRT, CheckedComplexFlag.VEST) # @_simple_enum(IntFlag) class ComplexFlag: def __new__(cls, value, label): obj = int.__new__(cls, value) obj._value_ = value obj.label = label return obj SHIRT = 1, 'upper half' VEST = 1, 'uppert half' PANTS = 2, 'lower half' _test_simple_enum(CheckedComplexFlag, ComplexFlag) class MiscTestCase(unittest.TestCase): def test__all__(self): support.check__all__(self, enum, not_exported={'bin', 'show_flag_values'}) def test_doc_1(self): class Single(Enum): ONE = 1 self.assertEqual(Single.__doc__, None) def test_doc_2(self): class Double(Enum): ONE = 1 TWO = 2 self.assertEqual(Double.__doc__, None) def test_doc_3(self): class Triple(Enum): ONE = 1 TWO = 2 THREE = 3 self.assertEqual(Triple.__doc__, None) def test_doc_4(self): class Quadruple(Enum): ONE = 1 TWO = 2 THREE = 3 FOUR = 4 self.assertEqual(Quadruple.__doc__, None) # These are unordered here on purpose to ensure that declaration order # makes no difference. CONVERT_TEST_NAME_D = 5 CONVERT_TEST_NAME_C = 5 CONVERT_TEST_NAME_B = 5 CONVERT_TEST_NAME_A = 5 # This one should sort first. CONVERT_TEST_NAME_E = 5 CONVERT_TEST_NAME_F = 5 CONVERT_STRING_TEST_NAME_D = 5 CONVERT_STRING_TEST_NAME_C = 5 CONVERT_STRING_TEST_NAME_B = 5 CONVERT_STRING_TEST_NAME_A = 5 # This one should sort first. CONVERT_STRING_TEST_NAME_E = 5 CONVERT_STRING_TEST_NAME_F = 5 # global names for StrEnum._convert_ test CONVERT_STR_TEST_2 = 'goodbye' CONVERT_STR_TEST_1 = 'hello' # We also need values that cannot be compared: UNCOMPARABLE_A = 5 UNCOMPARABLE_C = (9, 1) # naming order is broken on purpose UNCOMPARABLE_B = 'value' COMPLEX_C = 1j COMPLEX_A = 2j COMPLEX_B = 3j class TestConvert(unittest.TestCase): def tearDown(self): # Reset the module-level test variables to their original integer # values, otherwise the already created enum values get converted # instead. g = globals() for suffix in ['A', 'B', 'C', 'D', 'E', 'F']: g['CONVERT_TEST_NAME_%s' % suffix] = 5 g['CONVERT_STRING_TEST_NAME_%s' % suffix] = 5 for suffix, value in (('A', 5), ('B', (9, 1)), ('C', 'value')): g['UNCOMPARABLE_%s' % suffix] = value for suffix, value in (('A', 2j), ('B', 3j), ('C', 1j)): g['COMPLEX_%s' % suffix] = value for suffix, value in (('1', 'hello'), ('2', 'goodbye')): g['CONVERT_STR_TEST_%s' % suffix] = value def test_convert_value_lookup_priority(self): test_type = enum.IntEnum._convert_( 'UnittestConvert', MODULE, filter=lambda x: x.startswith('CONVERT_TEST_')) # We don't want the reverse lookup value to vary when there are # multiple possible names for a given value. It should always # report the first lexicographical name in that case. self.assertEqual(test_type(5).name, 'CONVERT_TEST_NAME_A') def test_convert_int(self): test_type = enum.IntEnum._convert_( 'UnittestConvert', MODULE, filter=lambda x: x.startswith('CONVERT_TEST_')) # Ensure that test_type has all of the desired names and values. self.assertEqual(test_type.CONVERT_TEST_NAME_F, test_type.CONVERT_TEST_NAME_A) self.assertEqual(test_type.CONVERT_TEST_NAME_B, 5) self.assertEqual(test_type.CONVERT_TEST_NAME_C, 5) self.assertEqual(test_type.CONVERT_TEST_NAME_D, 5) self.assertEqual(test_type.CONVERT_TEST_NAME_E, 5) # Ensure that test_type only picked up names matching the filter. extra = [name for name in dir(test_type) if name not in enum_dir(test_type)] missing = [name for name in enum_dir(test_type) if name not in dir(test_type)] self.assertEqual( extra + missing, [], msg='extra names: %r; missing names: %r' % (extra, missing), ) def test_convert_uncomparable(self): uncomp = enum.Enum._convert_( 'Uncomparable', MODULE, filter=lambda x: x.startswith('UNCOMPARABLE_')) # Should be ordered by `name` only: self.assertEqual( list(uncomp), [uncomp.UNCOMPARABLE_A, uncomp.UNCOMPARABLE_B, uncomp.UNCOMPARABLE_C], ) def test_convert_complex(self): uncomp = enum.Enum._convert_( 'Uncomparable', MODULE, filter=lambda x: x.startswith('COMPLEX_')) # Should be ordered by `name` only: self.assertEqual( list(uncomp), [uncomp.COMPLEX_A, uncomp.COMPLEX_B, uncomp.COMPLEX_C], ) def test_convert_str(self): test_type = enum.StrEnum._convert_( 'UnittestConvert', MODULE, filter=lambda x: x.startswith('CONVERT_STR_'), as_global=True) # Ensure that test_type has all of the desired names and values. self.assertEqual(test_type.CONVERT_STR_TEST_1, 'hello') self.assertEqual(test_type.CONVERT_STR_TEST_2, 'goodbye') # Ensure that test_type only picked up names matching the filter. extra = [name for name in dir(test_type) if name not in enum_dir(test_type)] missing = [name for name in enum_dir(test_type) if name not in dir(test_type)] self.assertEqual( extra + missing, [], msg='extra names: %r; missing names: %r' % (extra, missing), ) self.assertEqual(repr(test_type.CONVERT_STR_TEST_1), '%s.CONVERT_STR_TEST_1' % SHORT_MODULE) self.assertEqual(str(test_type.CONVERT_STR_TEST_2), 'goodbye') self.assertEqual(format(test_type.CONVERT_STR_TEST_1), 'hello') def test_convert_raise(self): with self.assertRaises(AttributeError): enum.IntEnum._convert( 'UnittestConvert', MODULE, filter=lambda x: x.startswith('CONVERT_TEST_')) def test_convert_repr_and_str(self): test_type = enum.IntEnum._convert_( 'UnittestConvert', MODULE, filter=lambda x: x.startswith('CONVERT_STRING_TEST_'), as_global=True) self.assertEqual(repr(test_type.CONVERT_STRING_TEST_NAME_A), '%s.CONVERT_STRING_TEST_NAME_A' % SHORT_MODULE) self.assertEqual(str(test_type.CONVERT_STRING_TEST_NAME_A), '5') self.assertEqual(format(test_type.CONVERT_STRING_TEST_NAME_A), '5') # helpers def enum_dir(cls): interesting = set([ '__class__', '__contains__', '__doc__', '__getitem__', '__iter__', '__len__', '__members__', '__module__', '__name__', '__qualname__', ] + cls._member_names_ ) if cls._new_member_ is not object.__new__: interesting.add('__new__') if cls.__init_subclass__ is not object.__init_subclass__: interesting.add('__init_subclass__') if cls._member_type_ is object: return sorted(interesting) else: # return whatever mixed-in data type has return sorted(set(dir(cls._member_type_)) | interesting) def member_dir(member): if member.__class__._member_type_ is object: allowed = set(['__class__', '__doc__', '__eq__', '__hash__', '__module__', 'name', 'value']) else: allowed = set(dir(member)) for cls in member.__class__.mro(): for name, obj in cls.__dict__.items(): if name[0] == '_': continue if isinstance(obj, enum.property): if obj.fget is not None or name not in member._member_map_: allowed.add(name) else: allowed.discard(name) elif name not in member._member_map_: allowed.add(name) return sorted(allowed) if __name__ == '__main__': unittest.main()