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e15174983a
This also uses enum.EnumType for Python 3.11+ as Python 3.11 renamed EnumMeta to EnumType. While the former is still available as an alias of the latter for now, let's prefer the canonical name for this. Check out https://docs.python.org/3/library/enum.html#enum.EnumType
328 lines
11 KiB
Python
328 lines
11 KiB
Python
import datetime
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import decimal
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import ipaddress
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import uuid
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from django.db import models
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from django.template import Context, Template
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from django.test import SimpleTestCase
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from django.utils.deprecation import RemovedInDjango60Warning
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from django.utils.functional import Promise
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from django.utils.translation import gettext_lazy as _
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class Suit(models.IntegerChoices):
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DIAMOND = 1, _("Diamond")
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SPADE = 2, _("Spade")
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HEART = 3, _("Heart")
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CLUB = 4, _("Club")
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class YearInSchool(models.TextChoices):
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FRESHMAN = "FR", _("Freshman")
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SOPHOMORE = "SO", _("Sophomore")
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JUNIOR = "JR", _("Junior")
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SENIOR = "SR", _("Senior")
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GRADUATE = "GR", _("Graduate")
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class Vehicle(models.IntegerChoices):
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CAR = 1, "Carriage"
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TRUCK = 2
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JET_SKI = 3
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__empty__ = _("(Unknown)")
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class Gender(models.TextChoices):
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MALE = "M"
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FEMALE = "F"
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NOT_SPECIFIED = "X"
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__empty__ = "(Undeclared)"
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class ChoicesTests(SimpleTestCase):
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def test_integerchoices(self):
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self.assertEqual(
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Suit.choices, [(1, "Diamond"), (2, "Spade"), (3, "Heart"), (4, "Club")]
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)
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self.assertEqual(Suit.labels, ["Diamond", "Spade", "Heart", "Club"])
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self.assertEqual(Suit.values, [1, 2, 3, 4])
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self.assertEqual(Suit.names, ["DIAMOND", "SPADE", "HEART", "CLUB"])
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self.assertEqual(repr(Suit.DIAMOND), "Suit.DIAMOND")
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self.assertEqual(Suit.DIAMOND.label, "Diamond")
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self.assertEqual(Suit.DIAMOND.value, 1)
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self.assertEqual(Suit["DIAMOND"], Suit.DIAMOND)
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self.assertEqual(Suit(1), Suit.DIAMOND)
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self.assertIsInstance(Suit, type(models.Choices))
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self.assertIsInstance(Suit.DIAMOND, Suit)
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self.assertIsInstance(Suit.DIAMOND.label, Promise)
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self.assertIsInstance(Suit.DIAMOND.value, int)
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def test_integerchoices_auto_label(self):
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self.assertEqual(Vehicle.CAR.label, "Carriage")
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self.assertEqual(Vehicle.TRUCK.label, "Truck")
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self.assertEqual(Vehicle.JET_SKI.label, "Jet Ski")
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def test_integerchoices_empty_label(self):
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self.assertEqual(Vehicle.choices[0], (None, "(Unknown)"))
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self.assertEqual(Vehicle.labels[0], "(Unknown)")
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self.assertIsNone(Vehicle.values[0])
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self.assertEqual(Vehicle.names[0], "__empty__")
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def test_integerchoices_functional_api(self):
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Place = models.IntegerChoices("Place", "FIRST SECOND THIRD")
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self.assertEqual(Place.labels, ["First", "Second", "Third"])
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self.assertEqual(Place.values, [1, 2, 3])
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self.assertEqual(Place.names, ["FIRST", "SECOND", "THIRD"])
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def test_integerchoices_containment(self):
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self.assertIn(Suit.DIAMOND, Suit)
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self.assertIn(1, Suit)
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self.assertNotIn(0, Suit)
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def test_textchoices(self):
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self.assertEqual(
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YearInSchool.choices,
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[
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("FR", "Freshman"),
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("SO", "Sophomore"),
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("JR", "Junior"),
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("SR", "Senior"),
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("GR", "Graduate"),
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],
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)
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self.assertEqual(
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YearInSchool.labels,
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["Freshman", "Sophomore", "Junior", "Senior", "Graduate"],
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)
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self.assertEqual(YearInSchool.values, ["FR", "SO", "JR", "SR", "GR"])
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self.assertEqual(
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YearInSchool.names,
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["FRESHMAN", "SOPHOMORE", "JUNIOR", "SENIOR", "GRADUATE"],
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)
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self.assertEqual(repr(YearInSchool.FRESHMAN), "YearInSchool.FRESHMAN")
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self.assertEqual(YearInSchool.FRESHMAN.label, "Freshman")
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self.assertEqual(YearInSchool.FRESHMAN.value, "FR")
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self.assertEqual(YearInSchool["FRESHMAN"], YearInSchool.FRESHMAN)
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self.assertEqual(YearInSchool("FR"), YearInSchool.FRESHMAN)
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self.assertIsInstance(YearInSchool, type(models.Choices))
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self.assertIsInstance(YearInSchool.FRESHMAN, YearInSchool)
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self.assertIsInstance(YearInSchool.FRESHMAN.label, Promise)
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self.assertIsInstance(YearInSchool.FRESHMAN.value, str)
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def test_textchoices_auto_label(self):
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self.assertEqual(Gender.MALE.label, "Male")
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self.assertEqual(Gender.FEMALE.label, "Female")
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self.assertEqual(Gender.NOT_SPECIFIED.label, "Not Specified")
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def test_textchoices_empty_label(self):
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self.assertEqual(Gender.choices[0], (None, "(Undeclared)"))
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self.assertEqual(Gender.labels[0], "(Undeclared)")
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self.assertIsNone(Gender.values[0])
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self.assertEqual(Gender.names[0], "__empty__")
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def test_textchoices_functional_api(self):
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Medal = models.TextChoices("Medal", "GOLD SILVER BRONZE")
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self.assertEqual(Medal.labels, ["Gold", "Silver", "Bronze"])
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self.assertEqual(Medal.values, ["GOLD", "SILVER", "BRONZE"])
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self.assertEqual(Medal.names, ["GOLD", "SILVER", "BRONZE"])
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def test_textchoices_containment(self):
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self.assertIn(YearInSchool.FRESHMAN, YearInSchool)
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self.assertIn("FR", YearInSchool)
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self.assertNotIn("XX", YearInSchool)
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def test_textchoices_blank_value(self):
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class BlankStr(models.TextChoices):
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EMPTY = "", "(Empty)"
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ONE = "ONE", "One"
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self.assertEqual(BlankStr.labels, ["(Empty)", "One"])
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self.assertEqual(BlankStr.values, ["", "ONE"])
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self.assertEqual(BlankStr.names, ["EMPTY", "ONE"])
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def test_invalid_definition(self):
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msg = "'str' object cannot be interpreted as an integer"
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with self.assertRaisesMessage(TypeError, msg):
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class InvalidArgumentEnum(models.IntegerChoices):
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# A string is not permitted as the second argument to int().
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ONE = 1, "X", "Invalid"
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msg = "duplicate values found in <enum 'Fruit'>: PINEAPPLE -> APPLE"
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with self.assertRaisesMessage(ValueError, msg):
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class Fruit(models.IntegerChoices):
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APPLE = 1, "Apple"
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PINEAPPLE = 1, "Pineapple"
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def test_str(self):
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for test in [Gender, Suit, YearInSchool, Vehicle]:
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for member in test:
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with self.subTest(member=member):
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self.assertEqual(str(test[member.name]), str(member.value))
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def test_templates(self):
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template = Template("{{ Suit.DIAMOND.label }}|{{ Suit.DIAMOND.value }}")
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output = template.render(Context({"Suit": Suit}))
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self.assertEqual(output, "Diamond|1")
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def test_property_names_conflict_with_member_names(self):
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with self.assertRaises(AttributeError):
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models.TextChoices("Properties", "choices labels names values")
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def test_label_member(self):
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# label can be used as a member.
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Stationery = models.TextChoices("Stationery", "label stamp sticker")
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self.assertEqual(Stationery.label.label, "Label")
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self.assertEqual(Stationery.label.value, "label")
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self.assertEqual(Stationery.label.name, "label")
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def test_do_not_call_in_templates_member(self):
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# do_not_call_in_templates is not implicitly treated as a member.
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Special = models.IntegerChoices("Special", "do_not_call_in_templates")
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self.assertEqual(
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Special.do_not_call_in_templates.label,
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"Do Not Call In Templates",
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)
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self.assertEqual(Special.do_not_call_in_templates.value, 1)
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self.assertEqual(
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Special.do_not_call_in_templates.name,
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"do_not_call_in_templates",
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)
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class Separator(bytes, models.Choices):
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FS = b"\x1c", "File Separator"
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GS = b"\x1d", "Group Separator"
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RS = b"\x1e", "Record Separator"
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US = b"\x1f", "Unit Separator"
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class Constants(float, models.Choices):
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PI = 3.141592653589793, "π"
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TAU = 6.283185307179586, "τ"
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class Set(frozenset, models.Choices):
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A = {1, 2}
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B = {2, 3}
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UNION = A | B
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DIFFERENCE = A - B
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INTERSECTION = A & B
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class MoonLandings(datetime.date, models.Choices):
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APOLLO_11 = 1969, 7, 20, "Apollo 11 (Eagle)"
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APOLLO_12 = 1969, 11, 19, "Apollo 12 (Intrepid)"
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APOLLO_14 = 1971, 2, 5, "Apollo 14 (Antares)"
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APOLLO_15 = 1971, 7, 30, "Apollo 15 (Falcon)"
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APOLLO_16 = 1972, 4, 21, "Apollo 16 (Orion)"
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APOLLO_17 = 1972, 12, 11, "Apollo 17 (Challenger)"
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class DateAndTime(datetime.datetime, models.Choices):
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A = 2010, 10, 10, 10, 10, 10
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B = 2011, 11, 11, 11, 11, 11
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C = 2012, 12, 12, 12, 12, 12
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class MealTimes(datetime.time, models.Choices):
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BREAKFAST = 7, 0
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LUNCH = 13, 0
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DINNER = 18, 30
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class Frequency(datetime.timedelta, models.Choices):
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WEEK = 0, 0, 0, 0, 0, 0, 1, "Week"
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DAY = 1, "Day"
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HOUR = 0, 0, 0, 0, 0, 1, "Hour"
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MINUTE = 0, 0, 0, 0, 1, "Hour"
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SECOND = 0, 1, "Second"
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class Number(decimal.Decimal, models.Choices):
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E = 2.718281828459045, "e"
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PI = "3.141592653589793", "π"
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TAU = decimal.Decimal("6.283185307179586"), "τ"
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class IPv4Address(ipaddress.IPv4Address, models.Choices):
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LOCALHOST = "127.0.0.1", "Localhost"
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GATEWAY = "192.168.0.1", "Gateway"
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BROADCAST = "192.168.0.255", "Broadcast"
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class IPv6Address(ipaddress.IPv6Address, models.Choices):
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LOCALHOST = "::1", "Localhost"
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UNSPECIFIED = "::", "Unspecified"
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class IPv4Network(ipaddress.IPv4Network, models.Choices):
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LOOPBACK = "127.0.0.0/8", "Loopback"
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LINK_LOCAL = "169.254.0.0/16", "Link-Local"
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PRIVATE_USE_A = "10.0.0.0/8", "Private-Use (Class A)"
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class IPv6Network(ipaddress.IPv6Network, models.Choices):
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LOOPBACK = "::1/128", "Loopback"
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UNSPECIFIED = "::/128", "Unspecified"
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UNIQUE_LOCAL = "fc00::/7", "Unique-Local"
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LINK_LOCAL_UNICAST = "fe80::/10", "Link-Local Unicast"
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class CustomChoicesTests(SimpleTestCase):
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def test_labels_valid(self):
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enums = (
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Separator,
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Constants,
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Set,
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MoonLandings,
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DateAndTime,
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MealTimes,
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Frequency,
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Number,
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IPv4Address,
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IPv6Address,
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IPv4Network,
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IPv6Network,
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)
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for choice_enum in enums:
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with self.subTest(choice_enum.__name__):
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self.assertNotIn(None, choice_enum.labels)
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def test_bool_unsupported(self):
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msg = "type 'bool' is not an acceptable base type"
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with self.assertRaisesMessage(TypeError, msg):
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class Boolean(bool, models.Choices):
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pass
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def test_timezone_unsupported(self):
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msg = "type 'datetime.timezone' is not an acceptable base type"
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with self.assertRaisesMessage(TypeError, msg):
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class Timezone(datetime.timezone, models.Choices):
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pass
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def test_uuid_unsupported(self):
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with self.assertRaises(TypeError):
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class Identifier(uuid.UUID, models.Choices):
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A = "972ce4eb-a95f-4a56-9339-68c208a76f18"
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class ChoicesMetaDeprecationTests(SimpleTestCase):
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def test_deprecation_warning(self):
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from django.db.models import enums
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msg = "ChoicesMeta is deprecated in favor of ChoicesType."
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with self.assertWarnsMessage(RemovedInDjango60Warning, msg):
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enums.ChoicesMeta
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