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import enum
import sys
import unittest
from enum import Enum, IntEnum, unique, EnumMeta
from pickle import dumps, loads, PicklingError, HIGHEST_PROTOCOL
pyver = float('%s.%s' % sys.version_info[:2])
try:
any
except NameError:
def any(iterable):
for element in iterable:
if element:
return True
return False
try:
unicode
except NameError:
unicode = str
try:
from collections import OrderedDict
except ImportError:
OrderedDict = None
# for pickle tests
try:
class Stooges(Enum):
LARRY = 1
CURLY = 2
MOE = 3
except Exception:
Stooges = sys.exc_info()[1]
try:
class IntStooges(int, Enum):
LARRY = 1
CURLY = 2
MOE = 3
except Exception:
IntStooges = sys.exc_info()[1]
try:
class FloatStooges(float, Enum):
LARRY = 1.39
CURLY = 2.72
MOE = 3.142596
except Exception:
FloatStooges = sys.exc_info()[1]
# for pickle test and subclass tests
try:
class StrEnum(str, Enum):
'accepts only string values'
class Name(StrEnum):
BDFL = 'Guido van Rossum'
FLUFL = 'Barry Warsaw'
except Exception:
Name = sys.exc_info()[1]
try:
Question = Enum('Question', 'who what when where why', module=__name__)
except Exception:
Question = sys.exc_info()[1]
try:
Answer = Enum('Answer', 'him this then there because')
except Exception:
Answer = sys.exc_info()[1]
try:
Theory = Enum('Theory', 'rule law supposition', qualname='spanish_inquisition')
except Exception:
Theory = sys.exc_info()[1]
# for doctests
try:
class Fruit(Enum):
tomato = 1
banana = 2
cherry = 3
except Exception:
pass
def test_pickle_dump_load(assertion, source, target=None,
protocol=(0, HIGHEST_PROTOCOL)):
start, stop = protocol
failures = []
for protocol in range(start, stop+1):
try:
if target is None:
assertion(loads(dumps(source, protocol=protocol)) is source)
else:
assertion(loads(dumps(source, protocol=protocol)), target)
except Exception:
exc, tb = sys.exc_info()[1:]
failures.append('%2d: %s' %(protocol, exc))
if failures:
raise ValueError('Failed with protocols: %s' % ', '.join(failures))
def test_pickle_exception(assertion, exception, obj,
protocol=(0, HIGHEST_PROTOCOL)):
start, stop = protocol
failures = []
for protocol in range(start, stop+1):
try:
assertion(exception, dumps, obj, protocol=protocol)
except Exception:
exc = sys.exc_info()[1]
failures.append('%d: %s %s' % (protocol, exc.__class__.__name__, exc))
if failures:
raise ValueError('Failed with protocols: %s' % ', '.join(failures))
class TestHelpers(unittest.TestCase):
# _is_descriptor, _is_sunder, _is_dunder
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_is_sunder(self):
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_is_dunder(self):
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))
class TestEnum(unittest.TestCase):
def setUp(self):
class Season(Enum):
SPRING = 1
SUMMER = 2
AUTUMN = 3
WINTER = 4
self.Season = Season
class Konstants(float, Enum):
E = 2.7182818
PI = 3.1415926
TAU = 2 * PI
self.Konstants = Konstants
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
if pyver >= 2.6: # cannot specify custom `dir` on previous versions
def test_dir_on_class(self):
Season = self.Season
self.assertEqual(
set(dir(Season)),
set(['__class__', '__doc__', '__members__', '__module__',
'SPRING', 'SUMMER', 'AUTUMN', 'WINTER']),
)
def test_dir_on_item(self):
Season = self.Season
self.assertEqual(
set(dir(Season.WINTER)),
set(['__class__', '__doc__', '__module__', 'name', 'value']),
)
def test_dir_on_sub_with_behavior_on_super(self):
# see issue22506
class SuperEnum(Enum):
def invisible(self):
return "did you see me?"
class SubEnum(SuperEnum):
sample = 5
self.assertEqual(
set(dir(SubEnum.sample)),
set(['__class__', '__doc__', '__module__', 'name', 'value', 'invisible']),
)
if pyver >= 2.7: # OrderedDict first available here
def test_members_is_ordereddict_if_ordered(self):
class Ordered(Enum):
__order__ = 'first second third'
first = 'bippity'
second = 'boppity'
third = 'boo'
self.assertTrue(type(Ordered.__members__) is OrderedDict)
def test_members_is_ordereddict_if_not_ordered(self):
class Unordered(Enum):
this = 'that'
these = 'those'
self.assertTrue(type(Unordered.__members__) is OrderedDict)
if pyver >= 3.0: # all objects are ordered in Python 2.x
def test_members_is_always_ordered(self):
class AlwaysOrdered(Enum):
first = 1
second = 2
third = 3
self.assertTrue(type(AlwaysOrdered.__members__) is OrderedDict)
def test_comparisons(self):
def bad_compare():
Season.SPRING > 4
Season = self.Season
self.assertNotEqual(Season.SPRING, 1)
self.assertRaises(TypeError, bad_compare)
class Part(Enum):
SPRING = 1
CLIP = 2
BARREL = 3
self.assertNotEqual(Season.SPRING, Part.SPRING)
def bad_compare():
Season.SPRING < Part.CLIP
self.assertRaises(TypeError, bad_compare)
def test_enum_in_enum_out(self):
Season = self.Season
self.assertTrue(Season(Season.WINTER) is Season.WINTER)
def test_enum_value(self):
Season = self.Season
self.assertEqual(Season.SPRING.value, 1)
def test_intenum_value(self):
self.assertEqual(IntStooges.CURLY.value, 2)
def test_enum(self):
Season = self.Season
lst = list(Season)
self.assertEqual(len(lst), len(Season))
self.assertEqual(len(Season), 4, Season)
self.assertEqual(
[Season.SPRING, Season.SUMMER, Season.AUTUMN, Season.WINTER], lst)
for i, season in enumerate('SPRING SUMMER AUTUMN WINTER'.split()):
i += 1
e = Season(i)
self.assertEqual(e, getattr(Season, season))
self.assertEqual(e.value, i)
self.assertNotEqual(e, i)
self.assertEqual(e.name, season)
self.assertTrue(e in Season)
self.assertTrue(type(e) is Season)
self.assertTrue(isinstance(e, Season))
self.assertEqual(str(e), 'Season.' + season)
self.assertEqual(
repr(e),
'<Season.%s: %s>' % (season, i),
)
def test_value_name(self):
Season = self.Season
self.assertEqual(Season.SPRING.name, 'SPRING')
self.assertEqual(Season.SPRING.value, 1)
def set_name(obj, new_value):
obj.name = new_value
def set_value(obj, new_value):
obj.value = new_value
self.assertRaises(AttributeError, set_name, Season.SPRING, 'invierno', )
self.assertRaises(AttributeError, set_value, Season.SPRING, 2)
def test_attribute_deletion(self):
class Season(Enum):
SPRING = 1
SUMMER = 2
AUTUMN = 3
WINTER = 4
def spam(cls):
pass
self.assertTrue(hasattr(Season, 'spam'))
del Season.spam
self.assertFalse(hasattr(Season, 'spam'))
self.assertRaises(AttributeError, delattr, Season, 'SPRING')
self.assertRaises(AttributeError, delattr, Season, 'DRY')
self.assertRaises(AttributeError, delattr, Season.SPRING, 'name')
def test_invalid_names(self):
def create_bad_class_1():
class Wrong(Enum):
mro = 9
def create_bad_class_2():
class Wrong(Enum):
_reserved_ = 3
self.assertRaises(ValueError, create_bad_class_1)
self.assertRaises(ValueError, create_bad_class_2)
def test_contains(self):
Season = self.Season
self.assertTrue(Season.AUTUMN in Season)
self.assertTrue(3 not in Season)
val = Season(3)
self.assertTrue(val in Season)
class OtherEnum(Enum):
one = 1; two = 2
self.assertTrue(OtherEnum.two not in Season)
if pyver >= 2.6: # when `format` came into being
def test_format_enum(self):
Season = self.Season
self.assertEqual('{0}'.format(Season.SPRING),
'{0}'.format(str(Season.SPRING)))
self.assertEqual( '{0:}'.format(Season.SPRING),
'{0:}'.format(str(Season.SPRING)))
self.assertEqual('{0:20}'.format(Season.SPRING),
'{0:20}'.format(str(Season.SPRING)))
self.assertEqual('{0:^20}'.format(Season.SPRING),
'{0:^20}'.format(str(Season.SPRING)))
self.assertEqual('{0:>20}'.format(Season.SPRING),
'{0:>20}'.format(str(Season.SPRING)))
self.assertEqual('{0:<20}'.format(Season.SPRING),
'{0:<20}'.format(str(Season.SPRING)))
def test_format_enum_custom(self):
class TestFloat(float, Enum):
one = 1.0
two = 2.0
def __format__(self, spec):
return 'TestFloat success!'
self.assertEqual('{0}'.format(TestFloat.one), 'TestFloat success!')
def assertFormatIsValue(self, spec, member):
self.assertEqual(spec.format(member), spec.format(member.value))
def test_format_enum_date(self):
Holiday = self.Holiday
self.assertFormatIsValue('{0}', Holiday.IDES_OF_MARCH)
self.assertFormatIsValue('{0:}', Holiday.IDES_OF_MARCH)
self.assertFormatIsValue('{0:20}', Holiday.IDES_OF_MARCH)
self.assertFormatIsValue('{0:^20}', Holiday.IDES_OF_MARCH)
self.assertFormatIsValue('{0:>20}', Holiday.IDES_OF_MARCH)
self.assertFormatIsValue('{0:<20}', Holiday.IDES_OF_MARCH)
self.assertFormatIsValue('{0:%Y %m}', Holiday.IDES_OF_MARCH)
self.assertFormatIsValue('{0:%Y %m %M:00}', Holiday.IDES_OF_MARCH)
def test_format_enum_float(self):
Konstants = self.Konstants
self.assertFormatIsValue('{0}', Konstants.TAU)
self.assertFormatIsValue('{0:}', Konstants.TAU)
self.assertFormatIsValue('{0:20}', Konstants.TAU)
self.assertFormatIsValue('{0:^20}', Konstants.TAU)
self.assertFormatIsValue('{0:>20}', Konstants.TAU)
self.assertFormatIsValue('{0:<20}', Konstants.TAU)
self.assertFormatIsValue('{0:n}', Konstants.TAU)
self.assertFormatIsValue('{0:5.2}', Konstants.TAU)
self.assertFormatIsValue('{0:f}', Konstants.TAU)
def test_format_enum_int(self):
Grades = self.Grades
self.assertFormatIsValue('{0}', Grades.C)
self.assertFormatIsValue('{0:}', Grades.C)
self.assertFormatIsValue('{0:20}', Grades.C)
self.assertFormatIsValue('{0:^20}', Grades.C)
self.assertFormatIsValue('{0:>20}', Grades.C)
self.assertFormatIsValue('{0:<20}', Grades.C)
self.assertFormatIsValue('{0:+}', Grades.C)
self.assertFormatIsValue('{0:08X}', Grades.C)
self.assertFormatIsValue('{0:b}', Grades.C)
def test_format_enum_str(self):
Directional = self.Directional
self.assertFormatIsValue('{0}', Directional.WEST)
self.assertFormatIsValue('{0:}', Directional.WEST)
self.assertFormatIsValue('{0:20}', Directional.WEST)
self.assertFormatIsValue('{0:^20}', Directional.WEST)
self.assertFormatIsValue('{0:>20}', Directional.WEST)
self.assertFormatIsValue('{0:<20}', Directional.WEST)
def test_hash(self):
Season = self.Season
dates = {}
dates[Season.WINTER] = '1225'
dates[Season.SPRING] = '0315'
dates[Season.SUMMER] = '0704'
dates[Season.AUTUMN] = '1031'
self.assertEqual(dates[Season.AUTUMN], '1031')
def test_enum_duplicates(self):
__order__ = "SPRING SUMMER AUTUMN WINTER"
class Season(Enum):
SPRING = 1
SUMMER = 2
AUTUMN = FALL = 3
WINTER = 4
ANOTHER_SPRING = 1
lst = list(Season)
self.assertEqual(
lst,
[Season.SPRING, Season.SUMMER,
Season.AUTUMN, Season.WINTER,
])
self.assertTrue(Season.FALL is Season.AUTUMN)
self.assertEqual(Season.FALL.value, 3)
self.assertEqual(Season.AUTUMN.value, 3)
self.assertTrue(Season(3) is Season.AUTUMN)
self.assertTrue(Season(1) is Season.SPRING)
self.assertEqual(Season.FALL.name, 'AUTUMN')
self.assertEqual(
set([k for k,v in Season.__members__.items() if v.name != k]),
set(['FALL', 'ANOTHER_SPRING']),
)
if pyver >= 3.0:
cls = vars()
result = {'Enum':Enum}
exec("""def test_duplicate_name(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):
@property
def red(self):
return 'redder'
red = 1
green = 2
blue = 3""",
result)
cls['test_duplicate_name'] = result['test_duplicate_name']
def test_enum_with_value_name(self):
class Huh(Enum):
name = 1
value = 2
self.assertEqual(
list(Huh),
[Huh.name, Huh.value],
)
self.assertTrue(type(Huh.name) is Huh)
self.assertEqual(Huh.name.name, 'name')
self.assertEqual(Huh.name.value, 1)
def test_intenum_from_scratch(self):
class phy(int, Enum):
pi = 3
tau = 2 * pi
self.assertTrue(phy.pi < phy.tau)
def test_intenum_inherited(self):
class IntEnum(int, Enum):
pass
class phy(IntEnum):
pi = 3
tau = 2 * pi
self.assertTrue(phy.pi < phy.tau)
def test_floatenum_from_scratch(self):
class phy(float, Enum):
pi = 3.1415926
tau = 2 * pi
self.assertTrue(phy.pi < phy.tau)
def test_floatenum_inherited(self):
class FloatEnum(float, Enum):
pass
class phy(FloatEnum):
pi = 3.1415926
tau = 2 * pi
self.assertTrue(phy.pi < phy.tau)
def test_strenum_from_scratch(self):
class phy(str, Enum):
pi = 'Pi'
tau = 'Tau'
self.assertTrue(phy.pi < phy.tau)
def test_strenum_inherited(self):
class StrEnum(str, Enum):
pass
class phy(StrEnum):
pi = 'Pi'
tau = 'Tau'
self.assertTrue(phy.pi < phy.tau)
def test_intenum(self):
class WeekDay(IntEnum):
SUNDAY = 1
MONDAY = 2
TUESDAY = 3
WEDNESDAY = 4
THURSDAY = 5
FRIDAY = 6
SATURDAY = 7
self.assertEqual(['a', 'b', 'c'][WeekDay.MONDAY], 'c')
self.assertEqual([i for i in range(WeekDay.TUESDAY)], [0, 1, 2])
lst = list(WeekDay)
self.assertEqual(len(lst), len(WeekDay))
self.assertEqual(len(WeekDay), 7)
target = 'SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY'
target = target.split()
for i, weekday in enumerate(target):
i += 1
e = WeekDay(i)
self.assertEqual(e, i)
self.assertEqual(int(e), i)
self.assertEqual(e.name, weekday)
self.assertTrue(e in WeekDay)
self.assertEqual(lst.index(e)+1, i)
self.assertTrue(0 < e < 8)
self.assertTrue(type(e) is WeekDay)
self.assertTrue(isinstance(e, int))
self.assertTrue(isinstance(e, Enum))
def test_intenum_duplicates(self):
class WeekDay(IntEnum):
__order__ = 'SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY'
SUNDAY = 1
MONDAY = 2
TUESDAY = TEUSDAY = 3
WEDNESDAY = 4
THURSDAY = 5
FRIDAY = 6
SATURDAY = 7
self.assertTrue(WeekDay.TEUSDAY is WeekDay.TUESDAY)
self.assertEqual(WeekDay(3).name, 'TUESDAY')
self.assertEqual([k for k,v in WeekDay.__members__.items()
if v.name != k], ['TEUSDAY', ])
def test_pickle_enum(self):
if isinstance(Stooges, Exception):
raise Stooges
test_pickle_dump_load(self.assertTrue, Stooges.CURLY)
test_pickle_dump_load(self.assertTrue, Stooges)
def test_pickle_int(self):
if isinstance(IntStooges, Exception):
raise IntStooges
test_pickle_dump_load(self.assertTrue, IntStooges.CURLY)
test_pickle_dump_load(self.assertTrue, IntStooges)
def test_pickle_float(self):
if isinstance(FloatStooges, Exception):
raise FloatStooges
test_pickle_dump_load(self.assertTrue, FloatStooges.CURLY)
test_pickle_dump_load(self.assertTrue, FloatStooges)
def test_pickle_enum_function(self):
if isinstance(Answer, Exception):
raise Answer
test_pickle_dump_load(self.assertTrue, Answer.him)
test_pickle_dump_load(self.assertTrue, Answer)
def test_pickle_enum_function_with_module(self):
if isinstance(Question, Exception):
raise Question
test_pickle_dump_load(self.assertTrue, Question.who)
test_pickle_dump_load(self.assertTrue, Question)
if pyver >= 3.4:
def test_class_nested_enum_and_pickle_protocol_four(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_exception(
self.assertRaises, PicklingError, self.NestedEnum.twigs,
protocol=(0, 3))
test_pickle_dump_load(self.assertTrue, self.NestedEnum.twigs,
protocol=(4, HIGHEST_PROTOCOL))
def test_exploding_pickle(self):
BadPickle = Enum('BadPickle', 'dill sweet bread-n-butter')
enum._make_class_unpicklable(BadPickle)
globals()['BadPickle'] = 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.assertTrue(Period(2) is Period.noon)
self.assertTrue(getattr(Period, 'night') is Period.night)
self.assertTrue(Period['morning'] is Period.morning)
def test_getattr_dunder(self):
Season = self.Season
self.assertTrue(getattr(Season, '__hash__'))
def test_iteration_order(self):
class Season(Enum):
__order__ = 'SUMMER WINTER AUTUMN SPRING'
SUMMER = 2
WINTER = 4
AUTUMN = 3
SPRING = 1
self.assertEqual(
list(Season),
[Season.SUMMER, Season.WINTER, Season.AUTUMN, Season.SPRING],
)
def test_iteration_order_with_unorderable_values(self):
class Complex(Enum):
a = complex(7, 9)
b = complex(3.14, 2)
c = complex(1, -1)
d = complex(-77, 32)
self.assertEqual(
list(Complex),
[Complex.a, Complex.b, Complex.c, Complex.d],
)
def test_programatic_function_string(self):
SummerMonth = Enum('SummerMonth', 'june july august')
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate('june july august'.split()):
i += 1
e = SummerMonth(i)
self.assertEqual(int(e.value), i)
self.assertNotEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_string_list(self):
SummerMonth = Enum('SummerMonth', ['june', 'july', 'august'])
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate('june july august'.split()):
i += 1
e = SummerMonth(i)
self.assertEqual(int(e.value), i)
self.assertNotEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_iterable(self):
SummerMonth = Enum(
'SummerMonth',
(('june', 1), ('july', 2), ('august', 3))
)
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate('june july august'.split()):
i += 1
e = SummerMonth(i)
self.assertEqual(int(e.value), i)
self.assertNotEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_from_dict(self):
SummerMonth = Enum(
'SummerMonth',
dict((('june', 1), ('july', 2), ('august', 3)))
)
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
if pyver < 3.0:
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate('june july august'.split()):
i += 1
e = SummerMonth(i)
self.assertEqual(int(e.value), i)
self.assertNotEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_type(self):
SummerMonth = Enum('SummerMonth', 'june july august', type=int)
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate('june july august'.split()):
i += 1
e = SummerMonth(i)
self.assertEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_type_from_subclass(self):
SummerMonth = IntEnum('SummerMonth', 'june july august')
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate('june july august'.split()):
i += 1
e = SummerMonth(i)
self.assertEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_unicode(self):
SummerMonth = Enum('SummerMonth', unicode('june july august'))
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate(unicode('june july august').split()):
i += 1
e = SummerMonth(i)
self.assertEqual(int(e.value), i)
self.assertNotEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_unicode_list(self):
SummerMonth = Enum('SummerMonth', [unicode('june'), unicode('july'), unicode('august')])
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate(unicode('june july august').split()):
i += 1
e = SummerMonth(i)
self.assertEqual(int(e.value), i)
self.assertNotEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_unicode_iterable(self):
SummerMonth = Enum(
'SummerMonth',
((unicode('june'), 1), (unicode('july'), 2), (unicode('august'), 3))
)
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate(unicode('june july august').split()):
i += 1
e = SummerMonth(i)
self.assertEqual(int(e.value), i)
self.assertNotEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_from_unicode_dict(self):
SummerMonth = Enum(
'SummerMonth',
dict(((unicode('june'), 1), (unicode('july'), 2), (unicode('august'), 3)))
)
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
if pyver < 3.0:
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate(unicode('june july august').split()):
i += 1
e = SummerMonth(i)
self.assertEqual(int(e.value), i)
self.assertNotEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_unicode_type(self):
SummerMonth = Enum('SummerMonth', unicode('june july august'), type=int)
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate(unicode('june july august').split()):
i += 1
e = SummerMonth(i)
self.assertEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programatic_function_unicode_type_from_subclass(self):
SummerMonth = IntEnum('SummerMonth', unicode('june july august'))
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate(unicode('june july august').split()):
i += 1
e = SummerMonth(i)
self.assertEqual(e, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_programmatic_function_unicode_class(self):
if pyver < 3.0:
class_names = unicode('SummerMonth'), 'S\xfcmm\xe9rM\xf6nth'.decode('latin1')
else:
class_names = 'SummerMonth', 'S\xfcmm\xe9rM\xf6nth'
for i, class_name in enumerate(class_names):
if pyver < 3.0 and i == 1:
self.assertRaises(TypeError, Enum, class_name, unicode('june july august'))
else:
SummerMonth = Enum(class_name, unicode('june july august'))
lst = list(SummerMonth)
self.assertEqual(len(lst), len(SummerMonth))
self.assertEqual(len(SummerMonth), 3, SummerMonth)
self.assertEqual(
[SummerMonth.june, SummerMonth.july, SummerMonth.august],
lst,
)
for i, month in enumerate(unicode('june july august').split()):
i += 1
e = SummerMonth(i)
self.assertEqual(e.value, i)
self.assertEqual(e.name, month)
self.assertTrue(e in SummerMonth)
self.assertTrue(type(e) is SummerMonth)
def test_subclassing(self):
if isinstance(Name, Exception):
raise Name
self.assertEqual(Name.BDFL, 'Guido van Rossum')
self.assertTrue(Name.BDFL, Name('Guido van Rossum'))
self.assertTrue(Name.BDFL is getattr(Name, 'BDFL'))
test_pickle_dump_load(self.assertTrue, Name.BDFL)
def test_extending(self):
def bad_extension():
class Color(Enum):
red = 1
green = 2
blue = 3
class MoreColor(Color):
cyan = 4
magenta = 5
yellow = 6
self.assertRaises(TypeError, bad_extension)
def test_exclude_methods(self):
class whatever(Enum):
this = 'that'
these = 'those'
def really(self):
return 'no, not %s' % self.value
self.assertFalse(type(whatever.really) is whatever)
self.assertEqual(whatever.this.really(), 'no, not that')
def test_wrong_inheritance_order(self):
def wrong_inherit():
class Wrong(Enum, str):
NotHere = 'error before this point'
self.assertRaises(TypeError, wrong_inherit)
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_introspection(self):
class Number(IntEnum):
one = 100
two = 200
self.assertTrue(Number.one._member_type_ is int)
self.assertTrue(Number._member_type_ is int)
class String(str, Enum):
yarn = 'soft'
rope = 'rough'
wire = 'hard'
self.assertTrue(String.yarn._member_type_ is str)
self.assertTrue(String._member_type_ is str)
class Plain(Enum):
vanilla = 'white'
one = 1
self.assertTrue(Plain.vanilla._member_type_ is object)
self.assertTrue(Plain._member_type_ is object)
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.assertTrue(Monochrome(Gender.female) is 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.assertTrue(Monochrome(Gender.male) is 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_no_such_enum_member(self):
class Color(Enum):
red = 1
green = 2
blue = 3
self.assertRaises(ValueError, Color, 4)
self.assertRaises(KeyError, Color.__getitem__, 'chartreuse')
def test_new_repr(self):
class Color(Enum):
red = 1
green = 2
blue = 3
def __repr__(self):
return "don't you just love shades of %s?" % self.name
self.assertEqual(
repr(Color.blue),
"don't you just love shades of blue?",
)
def test_inherited_repr(self):
class MyEnum(Enum):
def __repr__(self):
return "My name is %s." % self.name
class MyIntEnum(int, MyEnum):
this = 1
that = 2
theother = 3
self.assertEqual(repr(MyIntEnum.that), "My name is that.")
def test_multiple_mixin_mro(self):
class auto_enum(EnumMeta):
def __new__(metacls, cls, bases, classdict):
original_dict = classdict
classdict = enum._EnumDict()
for k, v in original_dict.items():
classdict[k] = v
temp = type(classdict)()
names = set(classdict._member_names)
i = 0
for k in classdict._member_names:
v = classdict[k]
if v == ():
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)
AutoNumberedEnum = auto_enum('AutoNumberedEnum', (Enum,), {})
AutoIntEnum = auto_enum('AutoIntEnum', (IntEnum,), {})
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
if len(args) < 1:
raise TypeError("name and value must be specified")
name, args = args[0], args[1:]
self = int.__new__(cls, *args)
self._intname = name
self._args = _args
return self
def __getnewargs__(self):
return self._args
@property
def __name__(self):
return self._intname
def __repr__(self):
# repr() is updated to include the name and type info
return "%s(%r, %s)" % (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(
'(%s + %s)' % (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.assertTrue(NEI.__new__ is 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.assertTrue, NI5, 5)
self.assertEqual(NEI.y.value, 2)
test_pickle_dump_load(self.assertTrue, NEI.y)
if pyver >= 3.4:
def test_subclasses_with_getnewargs_ex(self):
class NamedInt(int):
__qualname__ = 'NamedInt' # needed for pickle protocol 4
def __new__(cls, *args):
_args = args
if len(args) < 2:
raise TypeError("name and value must be specified")
name, args = args[0], args[1:]
self = int.__new__(cls, *args)
self._intname = name
self._args = _args
return self
def __getnewargs_ex__(self):
return self._args, {}
@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, protocol=(4, HIGHEST_PROTOCOL))
self.assertEqual(NEI.y.value, 2)
test_pickle_dump_load(self.assertTrue, NEI.y, protocol=(4, HIGHEST_PROTOCOL))
def test_subclasses_with_reduce(self):
class NamedInt(int):
__qualname__ = 'NamedInt' # needed for pickle protocol 4
def __new__(cls, *args):
_args = args
if len(args) < 1:
raise TypeError("name and value must be specified")
name, args = args[0], args[1:]
self = int.__new__(cls, *args)
self._intname = name
self._args = _args
return self
def __reduce__(self):
return self.__class__, self._args
@property
def __name__(self):
return self._intname
def __repr__(self):
# repr() is updated to include the name and type info
return "%s(%r, %s)" % (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(
'(%s + %s)' % (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.assertTrue(NEI.__new__ is 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.assertTrue, NEI.y)
def test_subclasses_with_reduce_ex(self):
class NamedInt(int):
__qualname__ = 'NamedInt' # needed for pickle protocol 4
def __new__(cls, *args):
_args = args
if len(args) < 1:
raise TypeError("name and value must be specified")
name, args = args[0], args[1:]
self = int.__new__(cls, *args)
self._intname = name
self._args = _args
return self
def __reduce_ex__(self, proto):
return self.__class__, self._args
@property
def __name__(self):
return self._intname
def __repr__(self):
# repr() is updated to include the name and type info
return "%s(%r, %s)" % (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(
'(%s + %s)' % (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.assertTrue(NEI.__new__ is 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.assertTrue, NEI.y)
def test_subclasses_without_direct_pickle_support(self):
class NamedInt(int):
__qualname__ = 'NamedInt'
def __new__(cls, *args):
_args = args
name, args = args[0], args[1:]
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
@property
def __name__(self):
return self._intname
def __repr__(self):
# repr() is updated to include the name and type info
return "%s(%r, %s)" % (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(
'(%s + %s)' % (self.__name__, other.__name__),
temp )
else:
return temp
class NEI(NamedInt, Enum):
__qualname__ = 'NEI'
x = ('the-x', 1)
y = ('the-y', 2)
self.assertTrue(NEI.__new__ is 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_exception(self.assertRaises, TypeError, NEI.x)
test_pickle_exception(self.assertRaises, PicklingError, NEI)
def test_subclasses_without_direct_pickle_support_using_name(self):
class NamedInt(int):
__qualname__ = 'NamedInt'
def __new__(cls, *args):
_args = args
name, args = args[0], args[1:]
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
@property
def __name__(self):
return self._intname
def __repr__(self):
# repr() is updated to include the name and type info
return "%s(%r, %s)" % (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(
'(%s + %s)' % (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.assertTrue(NEI.__new__ is 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.assertTrue, NEI.y)
test_pickle_dump_load(self.assertTrue, NEI)
def test_tuple_subclass(self):
class SomeTuple(tuple, Enum):
__qualname__ = 'SomeTuple'
first = (1, 'for the money')
second = (2, 'for the show')
third = (3, 'for the music')
self.assertTrue(type(SomeTuple.first) is SomeTuple)
self.assertTrue(isinstance(SomeTuple.second, tuple))
self.assertEqual(SomeTuple.third, (3, 'for the music'))
globals()['SomeTuple'] = SomeTuple
test_pickle_dump_load(self.assertTrue, SomeTuple.first)
def test_duplicate_values_give_unique_enum_items(self):
class AutoNumber(Enum):
__order__ = 'enum_m enum_d enum_y'
enum_m = ()
enum_d = ()
enum_y = ()
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(int(AutoNumber.enum_d), 2)
self.assertEqual(AutoNumber.enum_y.value, 3)
self.assertTrue(AutoNumber(1) is AutoNumber.enum_m)
self.assertEqual(
list(AutoNumber),
[AutoNumber.enum_m, AutoNumber.enum_d, AutoNumber.enum_y],
)
def test_inherited_new_from_enhanced_enum(self):
class AutoNumber2(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(AutoNumber2):
__order__ = 'red green blue'
red = ()
green = ()
blue = ()
self.assertEqual(len(Color), 3, "wrong number of elements: %d (should be %d)" % (len(Color), 3))
self.assertEqual(list(Color), [Color.red, Color.green, Color.blue])
if pyver >= 3.0:
self.assertEqual(list(map(int, Color)), [1, 2, 3])
def test_inherited_new_from_mixed_enum(self):
class AutoNumber3(IntEnum):
def __new__(cls):
value = len(cls.__members__) + 1
obj = int.__new__(cls, value)
obj._value_ = value
return obj
class Color(AutoNumber3):
red = ()
green = ()
blue = ()
self.assertEqual(len(Color), 3, "wrong number of elements: %d (should be %d)" % (len(Color), 3))
Color.red
Color.green
Color.blue
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):
__order__ = 'A B C D F'
A = 5
B = 4
C = 3
D = 2
F = 1
self.assertEqual(list(Grade), [Grade.A, Grade.B, Grade.C, Grade.D, Grade.F])
self.assertTrue(Grade.A > Grade.B)
self.assertTrue(Grade.F <= Grade.C)
self.assertTrue(Grade.D < Grade.A)
self.assertTrue(Grade.B >= Grade.B)
def test_extending2(self):
def bad_extension():
class Shade(Enum):
def shade(self):
print(self.name)
class Color(Shade):
red = 1
green = 2
blue = 3
class MoreColor(Color):
cyan = 4
magenta = 5
yellow = 6
self.assertRaises(TypeError, bad_extension)
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_no_duplicates(self):
def bad_duplicates():
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
class Color(UniqueEnum):
red = 1
green = 2
blue = 3
grene = 2
self.assertRaises(ValueError, bad_duplicates)
def test_reversed(self):
self.assertEqual(
list(reversed(self.Season)),
[self.Season.WINTER, self.Season.AUTUMN, self.Season.SUMMER,
self.Season.SPRING]
)
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
@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_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):
__order__ = 'red green blue'
red = ()
green = ()
blue = ()
self.assertEqual(list(ColorInAList), [ColorInAList.red, ColorInAList.green, ColorInAList.blue])
self.assertEqual(ColorInAList.red.value, [1])
self.assertEqual(ColorInAList([1]), ColorInAList.red)
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)
class TestUnique(unittest.TestCase):
"""2.4 doesn't allow class decorators, use function syntax."""
def test_unique_clean(self):
class Clean(Enum):
one = 1
two = 'dos'
tres = 4.0
unique(Clean)
class Cleaner(IntEnum):
single = 1
double = 2
triple = 3
unique(Cleaner)
def test_unique_dirty(self):
try:
class Dirty(Enum):
__order__ = 'one two tres'
one = 1
two = 'dos'
tres = 1
unique(Dirty)
except ValueError:
exc = sys.exc_info()[1]
message = exc.args[0]
self.assertTrue('tres -> one' in message)
try:
class Dirtier(IntEnum):
__order__ = 'single double triple turkey'
single = 1
double = 1
triple = 3
turkey = 3
unique(Dirtier)
except ValueError:
exc = sys.exc_info()[1]
message = exc.args[0]
self.assertTrue('double -> single' in message)
self.assertTrue('turkey -> triple' in message)
class TestMe(unittest.TestCase):
pass
if __name__ == '__main__':
unittest.main()
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