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test_transformer.py
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230 lines (177 loc) · 6.73 KB
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# Copyright: See the LICENSE file.
from unittest import TestCase
import factory
class TransformCounter:
calls_count = 0
@classmethod
def __call__(cls, x):
cls.calls_count += 1
return x.upper()
@classmethod
def reset(cls):
cls.calls_count = 0
transform = TransformCounter()
class Upper:
def __init__(self, name, **extra):
self.name = name
self.extra = extra
class UpperFactory(factory.Factory):
name = factory.Transformer("value", transform=transform)
class Meta:
model = Upper
class TransformerTest(TestCase):
def setUp(self):
transform.reset()
def test_transform_count(self):
self.assertEqual("VALUE", UpperFactory().name)
self.assertEqual(transform.calls_count, 1)
def test_transform_kwarg(self):
self.assertEqual("TEST", UpperFactory(name="test").name)
self.assertEqual(transform.calls_count, 1)
self.assertEqual("VALUE", UpperFactory().name)
self.assertEqual(transform.calls_count, 2)
def test_transform_faker(self):
value = UpperFactory(name=factory.Faker("first_name_female", locale="fr")).name
self.assertIs(value.isupper(), True)
def test_transform_linked(self):
value = UpperFactory(
name=factory.LazyAttribute(lambda o: o.username.replace(".", " ")),
username="john.doe",
).name
self.assertEqual(value, "JOHN DOE")
def test_force_value(self):
value = UpperFactory(name=factory.Transformer.Force("Mia")).name
self.assertEqual(value, "Mia")
def test_force_value_declaration(self):
"""Pretty unlikely use case, but easy enough to cover."""
value = UpperFactory(
name=factory.Transformer.Force(
factory.LazyFunction(lambda: "infinity")
)
).name
self.assertEqual(value, "infinity")
def test_force_value_declaration_context(self):
"""Ensure "forced" values run at the right level."""
value = UpperFactory(
name=factory.Transformer.Force(
factory.LazyAttribute(lambda o: o.username.replace(".", " ")),
),
username="john.doe",
).name
self.assertEqual(value, "john doe")
class TestObject:
def __init__(self, one=None, two=None, three=None):
self.one = one
self.two = two
self.three = three
class TransformDeclarationFactory(factory.Factory):
class Meta:
model = TestObject
one = factory.Transformer("", transform=str.upper)
two = factory.Transformer(factory.Sequence(int), transform=lambda n: n ** 2)
class TransformerSequenceTest(TestCase):
def test_on_sequence(self):
instance = TransformDeclarationFactory(__sequence=2)
self.assertEqual(instance.one, "")
self.assertEqual(instance.two, 4)
self.assertIsNone(instance.three)
def test_on_user_supplied(self):
"""A transformer can wrap a call-time declaration"""
instance = TransformDeclarationFactory(
one=factory.Sequence(str),
two=2,
__sequence=2,
)
self.assertEqual(instance.one, "2")
self.assertEqual(instance.two, 4)
self.assertIsNone(instance.three)
class WithMaybeFactory(factory.Factory):
class Meta:
model = TestObject
one = True
two = factory.Maybe(
'one',
yes_declaration=factory.Transformer("yes", transform=str.upper),
no_declaration=factory.Transformer("no", transform=str.upper),
)
three = factory.Maybe('one', no_declaration=factory.Transformer("three", transform=str.upper))
class TransformerMaybeTest(TestCase):
def test_default_transform(self):
instance = WithMaybeFactory()
self.assertIs(instance.one, True)
self.assertEqual(instance.two, "YES")
self.assertIsNone(instance.three)
def test_yes_transform(self):
instance = WithMaybeFactory(one=True)
self.assertIs(instance.one, True)
self.assertEqual(instance.two, "YES")
self.assertIsNone(instance.three)
def test_no_transform(self):
instance = WithMaybeFactory(one=False)
self.assertIs(instance.one, False)
self.assertEqual(instance.two, "NO")
self.assertEqual(instance.three, "THREE")
def test_override(self):
instance = WithMaybeFactory(one=True, two="NI")
self.assertIs(instance.one, True)
self.assertEqual(instance.two, "NI")
self.assertIsNone(instance.three)
class RelatedTest(TestCase):
def test_default_transform(self):
cities = []
class City:
def __init__(self, capital_of, name):
self.capital_of = capital_of
self.name = name
cities.append(self)
class Country:
def __init__(self, name):
self.name = name
class CityFactory(factory.Factory):
class Meta:
model = City
name = "Rennes"
class CountryFactory(factory.Factory):
class Meta:
model = Country
name = "France"
capital_city = factory.RelatedFactory(
CityFactory,
factory_related_name="capital_of",
name=factory.Transformer("Paris", transform=str.upper),
)
instance = CountryFactory()
self.assertEqual(instance.name, "France")
[city] = cities
self.assertEqual(city.capital_of, instance)
self.assertEqual(city.name, "PARIS")
class WithTraitFactory(factory.Factory):
class Meta:
model = TestObject
class Params:
upper_two = factory.Trait(
two=factory.Transformer("two", transform=str.upper)
)
odds = factory.Trait(
one="one",
three="three",
)
one = factory.Transformer("one", transform=str.upper)
class TransformerTraitTest(TestCase):
def test_traits_off(self):
instance = WithTraitFactory()
self.assertEqual(instance.one, "ONE")
self.assertIsNone(instance.two)
self.assertIsNone(instance.three)
def test_trait_transform_applies(self):
"""A trait-provided transformer should apply to existing values"""
instance = WithTraitFactory(upper_two=True)
self.assertEqual(instance.one, "ONE")
self.assertEqual(instance.two, "TWO")
self.assertIsNone(instance.three)
def test_trait_transform_applies_supplied(self):
"""A trait-provided transformer should be overridden by caller-provided values"""
instance = WithTraitFactory(upper_two=True, two="two")
self.assertEqual(instance.one, "ONE")
self.assertEqual(instance.two, "two")
self.assertIsNone(instance.three)