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5166097d7c
Enumeration helpers are callables, so the template system tried to call them with no arguments. Thanks Rupert Baker for helping discover this.
266 lines
9.3 KiB
Python
266 lines
9.3 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.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(Suit.choices, [(1, 'Diamond'), (2, 'Spade'), (3, 'Heart'), (4, 'Club')])
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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: 1>')
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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(YearInSchool.choices, [
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('FR', 'Freshman'), ('SO', 'Sophomore'), ('JR', 'Junior'), ('SR', 'Senior'), ('GR', 'Graduate'),
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])
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self.assertEqual(YearInSchool.labels, ['Freshman', 'Sophomore', 'Junior', 'Senior', 'Graduate'])
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self.assertEqual(YearInSchool.values, ['FR', 'SO', 'JR', 'SR', 'GR'])
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self.assertEqual(YearInSchool.names, ['FRESHMAN', 'SOPHOMORE', 'JUNIOR', 'SENIOR', 'GRADUATE'])
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self.assertEqual(repr(YearInSchool.FRESHMAN), "<YearInSchool.FRESHMAN: 'FR'>")
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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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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, Constants, Set, MoonLandings, DateAndTime, MealTimes,
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Frequency, Number, IPv4Address, IPv6Address, 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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msg = 'UUID objects are immutable'
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with self.assertRaisesMessage(TypeError, msg):
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class Identifier(uuid.UUID, models.Choices):
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A = '972ce4eb-a95f-4a56-9339-68c208a76f18'
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