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python-dependency-injector/tests/unit/providers/test_factories.py
Roman Mogilatov 89c1c975e6 Add FactoryDelegate provider + tests
2017-07-09 23:17:12 +03:00

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"""Dependency injector factory providers unit tests."""
import unittest2 as unittest
from dependency_injector import (
providers,
errors,
)
class Example(object):
def __init__(self, init_arg1=None, init_arg2=None, init_arg3=None,
init_arg4=None):
self.init_arg1 = init_arg1
self.init_arg2 = init_arg2
self.init_arg3 = init_arg3
self.init_arg4 = init_arg4
self.attribute1 = None
self.attribute2 = None
class FactoryTests(unittest.TestCase):
def test_is_provider(self):
self.assertTrue(providers.is_provider(providers.Factory(Example)))
def test_init_with_callable(self):
self.assertTrue(providers.Factory(credits))
def test_init_with_not_callable(self):
self.assertRaises(errors.Error, providers.Factory, 123)
def test_init_with_valid_provided_type(self):
class ExampleProvider(providers.Factory):
provided_type = Example
example_provider = ExampleProvider(Example, 1, 2)
self.assertIsInstance(example_provider(), Example)
def test_init_with_valid_provided_subtype(self):
class ExampleProvider(providers.Factory):
provided_type = Example
class NewExampe(Example):
pass
example_provider = ExampleProvider(NewExampe, 1, 2)
self.assertIsInstance(example_provider(), NewExampe)
def test_init_with_invalid_provided_type(self):
class ExampleProvider(providers.Factory):
provided_type = Example
with self.assertRaises(errors.Error):
ExampleProvider(list)
def test_call(self):
provider = providers.Factory(Example)
instance1 = provider()
instance2 = provider()
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_positional_args(self):
provider = providers.Factory(Example, 'i1', 'i2')
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.init_arg1, 'i1')
self.assertEqual(instance1.init_arg2, 'i2')
self.assertEqual(instance2.init_arg1, 'i1')
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_keyword_args(self):
provider = providers.Factory(Example, init_arg1='i1', init_arg2='i2')
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.init_arg1, 'i1')
self.assertEqual(instance1.init_arg2, 'i2')
self.assertEqual(instance2.init_arg1, 'i1')
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_init_positional_and_keyword_args(self):
provider = providers.Factory(Example, 'i1', init_arg2='i2')
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.init_arg1, 'i1')
self.assertEqual(instance1.init_arg2, 'i2')
self.assertEqual(instance2.init_arg1, 'i1')
self.assertEqual(instance2.init_arg2, 'i2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_attributes(self):
provider = providers.Factory(Example)
provider.add_attributes(attribute1='a1', attribute2='a2')
instance1 = provider()
instance2 = provider()
self.assertEqual(instance1.attribute1, 'a1')
self.assertEqual(instance1.attribute2, 'a2')
self.assertEqual(instance2.attribute1, 'a1')
self.assertEqual(instance2.attribute2, 'a2')
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, Example)
self.assertIsInstance(instance2, Example)
def test_call_with_context_args(self):
provider = providers.Factory(Example, 11, 22)
instance = provider(33, 44)
self.assertEqual(instance.init_arg1, 11)
self.assertEqual(instance.init_arg2, 22)
self.assertEqual(instance.init_arg3, 33)
self.assertEqual(instance.init_arg4, 44)
def test_call_with_context_kwargs(self):
provider = providers.Factory(Example, init_arg1=1)
instance1 = provider(init_arg2=22)
self.assertEqual(instance1.init_arg1, 1)
self.assertEqual(instance1.init_arg2, 22)
instance2 = provider(init_arg1=11, init_arg2=22)
self.assertEqual(instance2.init_arg1, 11)
self.assertEqual(instance2.init_arg2, 22)
def test_call_with_context_args_and_kwargs(self):
provider = providers.Factory(Example, 11)
instance = provider(22, init_arg3=33, init_arg4=44)
self.assertEqual(instance.init_arg1, 11)
self.assertEqual(instance.init_arg2, 22)
self.assertEqual(instance.init_arg3, 33)
self.assertEqual(instance.init_arg4, 44)
def test_fluent_interface(self):
provider = providers.Factory(Example) \
.add_args(1, 2) \
.add_kwargs(init_arg3=3, init_arg4=4) \
.add_attributes(attribute1=5, attribute2=6)
instance = provider()
self.assertEqual(instance.init_arg1, 1)
self.assertEqual(instance.init_arg2, 2)
self.assertEqual(instance.init_arg3, 3)
self.assertEqual(instance.init_arg4, 4)
self.assertEqual(instance.attribute1, 5)
self.assertEqual(instance.attribute2, 6)
def test_set_args(self):
provider = providers.Factory(Example) \
.add_args(1, 2) \
.set_args(3, 4)
self.assertEqual(provider.args, tuple([3, 4]))
def test_set_kwargs(self):
provider = providers.Factory(Example) \
.add_kwargs(init_arg3=3, init_arg4=4) \
.set_kwargs(init_arg3=4, init_arg4=5)
self.assertEqual(provider.kwargs, dict(init_arg3=4, init_arg4=5))
def test_set_attributes(self):
provider = providers.Factory(Example) \
.add_attributes(attribute1=5, attribute2=6) \
.set_attributes(attribute1=6, attribute2=7)
self.assertEqual(provider.attributes, dict(attribute1=6, attribute2=7))
def test_clear_args(self):
provider = providers.Factory(Example) \
.add_args(1, 2) \
.clear_args()
self.assertEqual(provider.args, tuple())
def test_clear_kwargs(self):
provider = providers.Factory(Example) \
.add_kwargs(init_arg3=3, init_arg4=4) \
.clear_kwargs()
self.assertEqual(provider.kwargs, dict())
def test_clear_attributes(self):
provider = providers.Factory(Example) \
.add_attributes(attribute1=5, attribute2=6) \
.clear_attributes()
self.assertEqual(provider.attributes, dict())
def test_call_overridden(self):
provider = providers.Factory(Example)
overriding_provider1 = providers.Factory(dict)
overriding_provider2 = providers.Factory(list)
provider.override(overriding_provider1)
provider.override(overriding_provider2)
instance1 = provider()
instance2 = provider()
self.assertIsNot(instance1, instance2)
self.assertIsInstance(instance1, list)
self.assertIsInstance(instance2, list)
def test_deepcopy(self):
provider = providers.Factory(Example)
provider_copy = providers.deepcopy(provider)
self.assertIsNot(provider, provider_copy)
self.assertIs(provider.cls, provider_copy.cls)
self.assertIsInstance(provider, providers.Factory)
def test_deepcopy_from_memo(self):
provider = providers.Factory(Example)
provider_copy_memo = providers.Factory(Example)
provider_copy = providers.deepcopy(
provider, memo={id(provider): provider_copy_memo})
self.assertIs(provider_copy, provider_copy_memo)
def test_deepcopy_args(self):
provider = providers.Factory(Example)
dependent_provider1 = providers.Factory(list)
dependent_provider2 = providers.Factory(dict)
provider.add_args(dependent_provider1, dependent_provider2)
provider_copy = providers.deepcopy(provider)
dependent_provider_copy1 = provider_copy.args[0]
dependent_provider_copy2 = provider_copy.args[1]
self.assertNotEqual(provider.args, provider_copy.args)
self.assertIs(dependent_provider1.cls, dependent_provider_copy1.cls)
self.assertIsNot(dependent_provider1, dependent_provider_copy1)
self.assertIs(dependent_provider2.cls, dependent_provider_copy2.cls)
self.assertIsNot(dependent_provider2, dependent_provider_copy2)
def test_deepcopy_kwargs(self):
provider = providers.Factory(Example)
dependent_provider1 = providers.Factory(list)
dependent_provider2 = providers.Factory(dict)
provider.add_kwargs(a1=dependent_provider1, a2=dependent_provider2)
provider_copy = providers.deepcopy(provider)
dependent_provider_copy1 = provider_copy.kwargs['a1']
dependent_provider_copy2 = provider_copy.kwargs['a2']
self.assertNotEqual(provider.kwargs, provider_copy.kwargs)
self.assertIs(dependent_provider1.cls, dependent_provider_copy1.cls)
self.assertIsNot(dependent_provider1, dependent_provider_copy1)
self.assertIs(dependent_provider2.cls, dependent_provider_copy2.cls)
self.assertIsNot(dependent_provider2, dependent_provider_copy2)
def test_deepcopy_attributes(self):
provider = providers.Factory(Example)
dependent_provider1 = providers.Factory(list)
dependent_provider2 = providers.Factory(dict)
provider.add_attributes(a1=dependent_provider1, a2=dependent_provider2)
provider_copy = providers.deepcopy(provider)
dependent_provider_copy1 = provider_copy.attributes['a1']
dependent_provider_copy2 = provider_copy.attributes['a2']
self.assertNotEqual(provider.attributes, provider_copy.attributes)
self.assertIs(dependent_provider1.cls, dependent_provider_copy1.cls)
self.assertIsNot(dependent_provider1, dependent_provider_copy1)
self.assertIs(dependent_provider2.cls, dependent_provider_copy2.cls)
self.assertIsNot(dependent_provider2, dependent_provider_copy2)
def test_deepcopy_overridden(self):
provider = providers.Factory(Example)
object_provider = providers.Object(object())
provider.override(object_provider)
provider_copy = providers.deepcopy(provider)
object_provider_copy = provider_copy.overridden[0]
self.assertIsNot(provider, provider_copy)
self.assertIs(provider.cls, provider_copy.cls)
self.assertIsInstance(provider, providers.Factory)
self.assertIsNot(object_provider, object_provider_copy)
self.assertIsInstance(object_provider_copy, providers.Object)
def test_repr(self):
provider = providers.Factory(Example)
self.assertEqual(repr(provider),
'<dependency_injector.providers.'
'Factory({0}) at {1}>'.format(
repr(Example),
hex(id(provider))))
class DelegatedFactoryTests(unittest.TestCase):
def test_inheritance(self):
self.assertIsInstance(providers.DelegatedFactory(object),
providers.Factory)
def test_is_provider(self):
self.assertTrue(
providers.is_provider(providers.DelegatedFactory(object)))
def test_is_delegated_provider(self):
self.assertTrue(
providers.is_delegated(providers.DelegatedFactory(object)))
def test_repr(self):
provider = providers.DelegatedFactory(Example)
self.assertEqual(repr(provider),
'<dependency_injector.providers.'
'DelegatedFactory({0}) at {1}>'.format(
repr(Example),
hex(id(provider))))
class AbstractFactoryTests(unittest.TestCase):
def test_inheritance(self):
self.assertIsInstance(providers.AbstractFactory(Example),
providers.Factory)
def test_call_overridden_by_factory(self):
provider = providers.AbstractFactory(object)
provider.override(providers.Factory(Example))
self.assertIsInstance(provider(), Example)
def test_call_overridden_by_delegated_factory(self):
provider = providers.AbstractFactory(object)
provider.override(providers.DelegatedFactory(Example))
self.assertIsInstance(provider(), Example)
def test_call_not_overridden(self):
provider = providers.AbstractFactory(object)
with self.assertRaises(errors.Error):
provider()
def test_override_by_not_factory(self):
provider = providers.AbstractFactory(object)
with self.assertRaises(errors.Error):
provider.override(providers.Callable(object))
def test_provide_not_implemented(self):
provider = providers.AbstractFactory(Example)
with self.assertRaises(NotImplementedError):
provider._provide(tuple(), dict())
def test_repr(self):
provider = providers.AbstractFactory(Example)
self.assertEqual(repr(provider),
'<dependency_injector.providers.'
'AbstractFactory({0}) at {1}>'.format(
repr(Example),
hex(id(provider))))
class FactoryDelegateTests(unittest.TestCase):
def setUp(self):
self.delegated = providers.Factory(object)
self.delegate = providers.FactoryDelegate(self.delegated)
def test_is_delegate(self):
self.assertIsInstance(self.delegate, providers.Delegate)
def test_init_with_not_factory(self):
self.assertRaises(errors.Error,
providers.FactoryDelegate,
providers.Object(object()))
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