922 lines
30 KiB
Python
922 lines
30 KiB
Python
import enum
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import unittest
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from collections import OrderedDict
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from pickle import dumps, loads, PicklingError
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from enum import Enum, IntEnum
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# for pickle tests
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try:
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class Stooges(Enum):
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LARRY = 1
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CURLY = 2
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MOE = 3
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except Exception as exc:
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Stooges = exc
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try:
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class IntStooges(int, Enum):
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LARRY = 1
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CURLY = 2
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MOE = 3
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except Exception as exc:
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IntStooges = exc
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try:
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class FloatStooges(float, Enum):
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LARRY = 1.39
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CURLY = 2.72
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MOE = 3.142596
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except Exception as exc:
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FloatStooges = exc
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# for pickle test and subclass tests
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try:
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class StrEnum(str, Enum):
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'accepts only string values'
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class Name(StrEnum):
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BDFL = 'Guido van Rossum'
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FLUFL = 'Barry Warsaw'
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except Exception as exc:
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Name = exc
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try:
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Question = Enum('Question', 'who what when where why', module=__name__)
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except Exception as exc:
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Question = exc
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try:
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Answer = Enum('Answer', 'him this then there because')
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except Exception as exc:
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Answer = exc
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# for doctests
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try:
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class Fruit(Enum):
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tomato = 1
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banana = 2
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cherry = 3
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except Exception:
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pass
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class TestEnum(unittest.TestCase):
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def setUp(self):
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class Season(Enum):
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SPRING = 1
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SUMMER = 2
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AUTUMN = 3
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WINTER = 4
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self.Season = Season
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def test_enum_in_enum_out(self):
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Season = self.Season
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self.assertIs(Season(Season.WINTER), Season.WINTER)
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def test_enum_value(self):
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Season = self.Season
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self.assertEqual(Season.SPRING.value, 1)
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def test_intenum_value(self):
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self.assertEqual(IntStooges.CURLY.value, 2)
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def test_dir_on_class(self):
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Season = self.Season
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self.assertEqual(
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set(dir(Season)),
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set(['__class__', '__doc__', '__members__',
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'SPRING', 'SUMMER', 'AUTUMN', 'WINTER']),
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)
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def test_dir_on_item(self):
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Season = self.Season
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self.assertEqual(
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set(dir(Season.WINTER)),
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set(['__class__', '__doc__', 'name', 'value']),
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)
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def test_enum(self):
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Season = self.Season
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lst = list(Season)
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self.assertEqual(len(lst), len(Season))
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self.assertEqual(len(Season), 4, Season)
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self.assertEqual(
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[Season.SPRING, Season.SUMMER, Season.AUTUMN, Season.WINTER], lst)
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for i, season in enumerate('SPRING SUMMER AUTUMN WINTER'.split(), 1):
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e = Season(i)
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self.assertEqual(e, getattr(Season, season))
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self.assertEqual(e.value, i)
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self.assertNotEqual(e, i)
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self.assertEqual(e.name, season)
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self.assertIn(e, Season)
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self.assertIs(type(e), Season)
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self.assertIsInstance(e, Season)
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self.assertEqual(str(e), 'Season.' + season)
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self.assertEqual(
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repr(e),
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'<Season.{0}: {1}>'.format(season, i),
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)
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def test_value_name(self):
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Season = self.Season
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self.assertEqual(Season.SPRING.name, 'SPRING')
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self.assertEqual(Season.SPRING.value, 1)
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with self.assertRaises(AttributeError):
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Season.SPRING.name = 'invierno'
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with self.assertRaises(AttributeError):
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Season.SPRING.value = 2
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def test_invalid_names(self):
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with self.assertRaises(ValueError):
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class Wrong(Enum):
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mro = 9
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with self.assertRaises(ValueError):
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class Wrong(Enum):
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_create_= 11
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with self.assertRaises(ValueError):
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class Wrong(Enum):
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_get_mixins_ = 9
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with self.assertRaises(ValueError):
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class Wrong(Enum):
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_find_new_ = 1
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with self.assertRaises(ValueError):
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class Wrong(Enum):
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_any_name_ = 9
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def test_contains(self):
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Season = self.Season
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self.assertIn(Season.AUTUMN, Season)
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self.assertNotIn(3, Season)
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val = Season(3)
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self.assertIn(val, Season)
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class OtherEnum(Enum):
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one = 1; two = 2
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self.assertNotIn(OtherEnum.two, Season)
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def test_comparisons(self):
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Season = self.Season
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with self.assertRaises(TypeError):
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Season.SPRING < Season.WINTER
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with self.assertRaises(TypeError):
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Season.SPRING > 4
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self.assertNotEqual(Season.SPRING, 1)
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class Part(Enum):
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SPRING = 1
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CLIP = 2
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BARREL = 3
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self.assertNotEqual(Season.SPRING, Part.SPRING)
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with self.assertRaises(TypeError):
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Season.SPRING < Part.CLIP
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def test_enum_duplicates(self):
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class Season(Enum):
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SPRING = 1
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SUMMER = 2
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AUTUMN = FALL = 3
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WINTER = 4
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ANOTHER_SPRING = 1
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lst = list(Season)
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self.assertEqual(
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lst,
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[Season.SPRING, Season.SUMMER,
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Season.AUTUMN, Season.WINTER,
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])
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self.assertIs(Season.FALL, Season.AUTUMN)
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self.assertEqual(Season.FALL.value, 3)
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self.assertEqual(Season.AUTUMN.value, 3)
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self.assertIs(Season(3), Season.AUTUMN)
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self.assertIs(Season(1), Season.SPRING)
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self.assertEqual(Season.FALL.name, 'AUTUMN')
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self.assertEqual(
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[k for k,v in Season.__members__.items() if v.name != k],
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['FALL', 'ANOTHER_SPRING'],
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)
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def test_enum_with_value_name(self):
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class Huh(Enum):
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name = 1
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value = 2
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self.assertEqual(
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list(Huh),
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[Huh.name, Huh.value],
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)
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self.assertIs(type(Huh.name), Huh)
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self.assertEqual(Huh.name.name, 'name')
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self.assertEqual(Huh.name.value, 1)
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def test_hash(self):
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Season = self.Season
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dates = {}
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dates[Season.WINTER] = '1225'
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dates[Season.SPRING] = '0315'
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dates[Season.SUMMER] = '0704'
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dates[Season.AUTUMN] = '1031'
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self.assertEqual(dates[Season.AUTUMN], '1031')
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def test_intenum_from_scratch(self):
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class phy(int, Enum):
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pi = 3
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tau = 2 * pi
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self.assertTrue(phy.pi < phy.tau)
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def test_intenum_inherited(self):
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class IntEnum(int, Enum):
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pass
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class phy(IntEnum):
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pi = 3
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tau = 2 * pi
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self.assertTrue(phy.pi < phy.tau)
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def test_floatenum_from_scratch(self):
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class phy(float, Enum):
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pi = 3.141596
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tau = 2 * pi
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self.assertTrue(phy.pi < phy.tau)
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def test_floatenum_inherited(self):
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class FloatEnum(float, Enum):
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pass
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class phy(FloatEnum):
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pi = 3.141596
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tau = 2 * pi
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self.assertTrue(phy.pi < phy.tau)
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def test_strenum_from_scratch(self):
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class phy(str, Enum):
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pi = 'Pi'
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tau = 'Tau'
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self.assertTrue(phy.pi < phy.tau)
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def test_strenum_inherited(self):
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class StrEnum(str, Enum):
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pass
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class phy(StrEnum):
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pi = 'Pi'
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tau = 'Tau'
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self.assertTrue(phy.pi < phy.tau)
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def test_intenum(self):
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class WeekDay(IntEnum):
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SUNDAY = 1
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MONDAY = 2
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TUESDAY = 3
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WEDNESDAY = 4
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THURSDAY = 5
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FRIDAY = 6
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SATURDAY = 7
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self.assertEqual(['a', 'b', 'c'][WeekDay.MONDAY], 'c')
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self.assertEqual([i for i in range(WeekDay.TUESDAY)], [0, 1, 2])
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lst = list(WeekDay)
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self.assertEqual(len(lst), len(WeekDay))
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self.assertEqual(len(WeekDay), 7)
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target = 'SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY'
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target = target.split()
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for i, weekday in enumerate(target, 1):
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e = WeekDay(i)
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self.assertEqual(e, i)
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self.assertEqual(int(e), i)
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self.assertEqual(e.name, weekday)
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self.assertIn(e, WeekDay)
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self.assertEqual(lst.index(e)+1, i)
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self.assertTrue(0 < e < 8)
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self.assertIs(type(e), WeekDay)
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self.assertIsInstance(e, int)
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self.assertIsInstance(e, Enum)
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def test_intenum_duplicates(self):
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class WeekDay(IntEnum):
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SUNDAY = 1
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MONDAY = 2
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TUESDAY = TEUSDAY = 3
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WEDNESDAY = 4
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THURSDAY = 5
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FRIDAY = 6
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SATURDAY = 7
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self.assertIs(WeekDay.TEUSDAY, WeekDay.TUESDAY)
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self.assertEqual(WeekDay(3).name, 'TUESDAY')
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self.assertEqual([k for k,v in WeekDay.__members__.items()
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if v.name != k], ['TEUSDAY', ])
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def test_pickle_enum(self):
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if isinstance(Stooges, Exception):
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raise Stooges
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self.assertIs(Stooges.CURLY, loads(dumps(Stooges.CURLY)))
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self.assertIs(Stooges, loads(dumps(Stooges)))
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def test_pickle_int(self):
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if isinstance(IntStooges, Exception):
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raise IntStooges
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self.assertIs(IntStooges.CURLY, loads(dumps(IntStooges.CURLY)))
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self.assertIs(IntStooges, loads(dumps(IntStooges)))
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def test_pickle_float(self):
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if isinstance(FloatStooges, Exception):
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raise FloatStooges
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self.assertIs(FloatStooges.CURLY, loads(dumps(FloatStooges.CURLY)))
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self.assertIs(FloatStooges, loads(dumps(FloatStooges)))
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def test_pickle_enum_function(self):
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if isinstance(Answer, Exception):
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raise Answer
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self.assertIs(Answer.him, loads(dumps(Answer.him)))
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self.assertIs(Answer, loads(dumps(Answer)))
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def test_pickle_enum_function_with_module(self):
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if isinstance(Question, Exception):
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raise Question
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self.assertIs(Question.who, loads(dumps(Question.who)))
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self.assertIs(Question, loads(dumps(Question)))
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def test_exploding_pickle(self):
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BadPickle = Enum('BadPickle', 'dill sweet bread-n-butter')
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enum._make_class_unpicklable(BadPickle)
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globals()['BadPickle'] = BadPickle
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with self.assertRaises(TypeError):
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dumps(BadPickle.dill)
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with self.assertRaises(PicklingError):
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dumps(BadPickle)
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def test_string_enum(self):
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class SkillLevel(str, Enum):
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master = 'what is the sound of one hand clapping?'
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journeyman = 'why did the chicken cross the road?'
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apprentice = 'knock, knock!'
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self.assertEqual(SkillLevel.apprentice, 'knock, knock!')
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def test_getattr_getitem(self):
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class Period(Enum):
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morning = 1
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noon = 2
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evening = 3
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night = 4
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self.assertIs(Period(2), Period.noon)
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self.assertIs(getattr(Period, 'night'), Period.night)
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self.assertIs(Period['morning'], Period.morning)
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def test_getattr_dunder(self):
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Season = self.Season
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self.assertTrue(getattr(Season, '__eq__'))
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def test_iteration_order(self):
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class Season(Enum):
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SUMMER = 2
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WINTER = 4
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AUTUMN = 3
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SPRING = 1
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self.assertEqual(
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list(Season),
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[Season.SUMMER, Season.WINTER, Season.AUTUMN, Season.SPRING],
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)
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def test_programatic_function_string(self):
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SummerMonth = Enum('SummerMonth', 'june july august')
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lst = list(SummerMonth)
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self.assertEqual(len(lst), len(SummerMonth))
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self.assertEqual(len(SummerMonth), 3, SummerMonth)
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self.assertEqual(
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[SummerMonth.june, SummerMonth.july, SummerMonth.august],
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lst,
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)
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for i, month in enumerate('june july august'.split(), 1):
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e = SummerMonth(i)
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self.assertEqual(int(e.value), i)
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self.assertNotEqual(e, i)
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self.assertEqual(e.name, month)
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self.assertIn(e, SummerMonth)
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self.assertIs(type(e), SummerMonth)
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def test_programatic_function_string_list(self):
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SummerMonth = Enum('SummerMonth', ['june', 'july', 'august'])
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lst = list(SummerMonth)
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self.assertEqual(len(lst), len(SummerMonth))
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self.assertEqual(len(SummerMonth), 3, SummerMonth)
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self.assertEqual(
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[SummerMonth.june, SummerMonth.july, SummerMonth.august],
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lst,
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)
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for i, month in enumerate('june july august'.split(), 1):
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e = SummerMonth(i)
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self.assertEqual(int(e.value), i)
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self.assertNotEqual(e, i)
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self.assertEqual(e.name, month)
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self.assertIn(e, SummerMonth)
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self.assertIs(type(e), SummerMonth)
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|
|
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def test_programatic_function_iterable(self):
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SummerMonth = Enum(
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'SummerMonth',
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(('june', 1), ('july', 2), ('august', 3))
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)
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lst = list(SummerMonth)
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self.assertEqual(len(lst), len(SummerMonth))
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self.assertEqual(len(SummerMonth), 3, SummerMonth)
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self.assertEqual(
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[SummerMonth.june, SummerMonth.july, SummerMonth.august],
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lst,
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)
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for i, month in enumerate('june july august'.split(), 1):
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e = SummerMonth(i)
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self.assertEqual(int(e.value), i)
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self.assertNotEqual(e, i)
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self.assertEqual(e.name, month)
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self.assertIn(e, SummerMonth)
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self.assertIs(type(e), SummerMonth)
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|
|
|
def test_programatic_function_from_dict(self):
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|
SummerMonth = Enum(
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'SummerMonth',
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OrderedDict((('june', 1), ('july', 2), ('august', 3)))
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)
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lst = list(SummerMonth)
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self.assertEqual(len(lst), len(SummerMonth))
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self.assertEqual(len(SummerMonth), 3, SummerMonth)
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self.assertEqual(
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[SummerMonth.june, SummerMonth.july, SummerMonth.august],
|
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lst,
|
|
)
|
|
for i, month in enumerate('june july august'.split(), 1):
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e = SummerMonth(i)
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self.assertEqual(int(e.value), i)
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|
self.assertNotEqual(e, i)
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self.assertEqual(e.name, month)
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|
self.assertIn(e, SummerMonth)
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self.assertIs(type(e), SummerMonth)
|
|
|
|
def test_programatic_function_type(self):
|
|
SummerMonth = Enum('SummerMonth', 'june july august', type=int)
|
|
lst = list(SummerMonth)
|
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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(), 1):
|
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e = SummerMonth(i)
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|
self.assertEqual(e, i)
|
|
self.assertEqual(e.name, month)
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|
self.assertIn(e, SummerMonth)
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|
self.assertIs(type(e), 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(), 1):
|
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e = SummerMonth(i)
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self.assertEqual(e, i)
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|
self.assertEqual(e.name, month)
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|
self.assertIn(e, SummerMonth)
|
|
self.assertIs(type(e), SummerMonth)
|
|
|
|
def test_subclassing(self):
|
|
if isinstance(Name, Exception):
|
|
raise Name
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|
self.assertEqual(Name.BDFL, 'Guido van Rossum')
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|
self.assertTrue(Name.BDFL, Name('Guido van Rossum'))
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|
self.assertIs(Name.BDFL, getattr(Name, 'BDFL'))
|
|
self.assertIs(Name.BDFL, loads(dumps(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
|
|
|
|
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_overwrite_enums(self):
|
|
class Why(Enum):
|
|
question = 1
|
|
answer = 2
|
|
propisition = 3
|
|
def question(self):
|
|
print(42)
|
|
self.assertIsNot(type(Why.question), Why)
|
|
self.assertNotIn(Why.question, Why._member_names)
|
|
self.assertNotIn(Why.question, Why)
|
|
|
|
def test_wrong_inheritance_order(self):
|
|
with self.assertRaises(TypeError):
|
|
class Wrong(Enum, str):
|
|
NotHere = 'error before this point'
|
|
|
|
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_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']
|
|
|
|
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(type(Enum)):
|
|
def __new__(metacls, cls, bases, classdict):
|
|
temp = type(classdict)()
|
|
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):
|
|
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
|
|
@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):
|
|
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(loads(dumps(NI5)), 5)
|
|
self.assertEqual(NEI.y.value, 2)
|
|
self.assertIs(loads(dumps(NEI.y)), NEI.y)
|
|
|
|
def test_subclasses_without_getnewargs(self):
|
|
class NamedInt(int):
|
|
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
|
|
@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):
|
|
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.assertRaises(TypeError):
|
|
dumps(NEI.x)
|
|
with self.assertRaises(PicklingError):
|
|
dumps(NEI)
|
|
|
|
def test_tuple_subclass(self):
|
|
class SomeTuple(tuple, Enum):
|
|
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
|
|
self.assertIs(loads(dumps(SomeTuple.first)), SomeTuple.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.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_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)
|
|
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_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
|
|
@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))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|