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# Copyright: See the LICENSE file.
import collections
import datetime
import random
import unittest
import faker.providers
import factory
class MockFaker:
def __init__(self, expected):
self.expected = expected
self.random = random.Random()
def format(self, provider, **kwargs):
return self.expected[provider]
class AdvancedMockFaker:
def __init__(self, handlers):
self.handlers = handlers
self.random = random.Random()
def format(self, provider, **kwargs):
handler = self.handlers[provider]
return handler(**kwargs)
class FakerTests(unittest.TestCase):
def setUp(self):
self._real_fakers = factory.Faker._FAKER_REGISTRY
factory.Faker._FAKER_REGISTRY = {}
def tearDown(self):
factory.Faker._FAKER_REGISTRY = self._real_fakers
def _setup_mock_faker(self, locale=None, **definitions):
if locale is None:
locale = factory.Faker._DEFAULT_LOCALE
factory.Faker._FAKER_REGISTRY[locale] = MockFaker(definitions)
def _setup_advanced_mock_faker(self, locale=None, **handlers):
if locale is None:
locale = factory.Faker._DEFAULT_LOCALE
factory.Faker._FAKER_REGISTRY[locale] = AdvancedMockFaker(handlers)
def test_simple_biased(self):
self._setup_mock_faker(name="John Doe")
faker_field = factory.Faker('name')
self.assertEqual("John Doe", faker_field.evaluate(None, None, {'locale': None}))
def test_full_factory(self):
class Profile:
def __init__(self, first_name, last_name, email):
self.first_name = first_name
self.last_name = last_name
self.email = email
class ProfileFactory(factory.Factory):
class Meta:
model = Profile
first_name = factory.Faker('first_name')
last_name = factory.Faker('last_name', locale='fr_FR')
email = factory.Faker('email')
self._setup_mock_faker(first_name="John", last_name="Doe", email="john.doe@example.org")
self._setup_mock_faker(first_name="Jean", last_name="Valjean", email="jvaljean@exemple.fr", locale='fr_FR')
profile = ProfileFactory()
self.assertEqual("John", profile.first_name)
self.assertEqual("Valjean", profile.last_name)
self.assertEqual('john.doe@example.org', profile.email)
def test_override_locale(self):
class Profile:
def __init__(self, first_name, last_name):
self.first_name = first_name
self.last_name = last_name
class ProfileFactory(factory.Factory):
class Meta:
model = Profile
first_name = factory.Faker('first_name')
last_name = factory.Faker('last_name', locale='fr_FR')
self._setup_mock_faker(first_name="John", last_name="Doe")
self._setup_mock_faker(first_name="Jean", last_name="Valjean", locale='fr_FR')
self._setup_mock_faker(first_name="Johannes", last_name="Brahms", locale='de_DE')
profile = ProfileFactory()
self.assertEqual("John", profile.first_name)
self.assertEqual("Valjean", profile.last_name)
with factory.Faker.override_default_locale('de_DE'):
profile = ProfileFactory()
self.assertEqual("Johannes", profile.first_name)
self.assertEqual("Valjean", profile.last_name)
profile = ProfileFactory()
self.assertEqual("John", profile.first_name)
self.assertEqual("Valjean", profile.last_name)
def test_add_provider(self):
class Face:
def __init__(self, smiley, french_smiley):
self.smiley = smiley
self.french_smiley = french_smiley
class FaceFactory(factory.Factory):
class Meta:
model = Face
smiley = factory.Faker('smiley')
french_smiley = factory.Faker('smiley', locale='fr_FR')
class SmileyProvider(faker.providers.BaseProvider):
def smiley(self):
return ':)'
class FrenchSmileyProvider(faker.providers.BaseProvider):
def smiley(self):
return '(:'
factory.Faker.add_provider(SmileyProvider)
factory.Faker.add_provider(FrenchSmileyProvider, 'fr_FR')
face = FaceFactory()
self.assertEqual(":)", face.smiley)
self.assertEqual("(:", face.french_smiley)
def test_faker_customization(self):
"""Factory declarations in Faker parameters should be accepted."""
Trip = collections.namedtuple('Trip', ['departure', 'transfer', 'arrival'])
may_4th = datetime.date(1977, 5, 4)
may_25th = datetime.date(1977, 5, 25)
october_19th = datetime.date(1977, 10, 19)
class TripFactory(factory.Factory):
class Meta:
model = Trip
departure = may_4th
arrival = may_25th
transfer = factory.Faker(
'date_between_dates',
start_date=factory.SelfAttribute('..departure'),
end_date=factory.SelfAttribute('..arrival'),
)
def fake_select_date(start_date, end_date):
"""Fake date_between_dates."""
# Ensure that dates have been transferred from the factory
# to Faker parameters.
self.assertEqual(start_date, may_4th)
self.assertEqual(end_date, may_25th)
return october_19th
self._setup_advanced_mock_faker(
date_between_dates=fake_select_date,
)
trip = TripFactory()
self.assertEqual(may_4th, trip.departure)
self.assertEqual(october_19th, trip.transfer)
self.assertEqual(may_25th, trip.arrival)
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