mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-27 12:04:00 +03:00
612 lines
21 KiB
Python
612 lines
21 KiB
Python
"""Dependency injector factory providers unit tests."""
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import sys
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import unittest
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from dependency_injector import (
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providers,
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errors,
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)
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class Example(object):
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def __init__(self, init_arg1=None, init_arg2=None, init_arg3=None,
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init_arg4=None):
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self.init_arg1 = init_arg1
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self.init_arg2 = init_arg2
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self.init_arg3 = init_arg3
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self.init_arg4 = init_arg4
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self.attribute1 = None
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self.attribute2 = None
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class FactoryTests(unittest.TestCase):
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def test_is_provider(self):
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self.assertTrue(providers.is_provider(providers.Factory(Example)))
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def test_init_with_callable(self):
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self.assertTrue(providers.Factory(credits))
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def test_init_with_not_callable(self):
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self.assertRaises(errors.Error, providers.Factory, 123)
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def test_init_optional_provides(self):
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provider = providers.Factory()
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provider.set_provides(object)
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self.assertIs(provider.provides, object)
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self.assertIsInstance(provider(), object)
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def test_set_provides_returns_self(self):
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provider = providers.Factory()
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self.assertIs(provider.set_provides(object), provider)
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def test_init_with_valid_provided_type(self):
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class ExampleProvider(providers.Factory):
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provided_type = Example
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example_provider = ExampleProvider(Example, 1, 2)
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self.assertIsInstance(example_provider(), Example)
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def test_init_with_valid_provided_subtype(self):
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class ExampleProvider(providers.Factory):
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provided_type = Example
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class NewExampe(Example):
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pass
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example_provider = ExampleProvider(NewExampe, 1, 2)
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self.assertIsInstance(example_provider(), NewExampe)
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def test_init_with_invalid_provided_type(self):
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class ExampleProvider(providers.Factory):
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provided_type = Example
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with self.assertRaises(errors.Error):
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ExampleProvider(list)
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def test_provided_instance_provider(self):
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provider = providers.Factory(Example)
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self.assertIsInstance(provider.provided, providers.ProvidedInstance)
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def test_call(self):
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provider = providers.Factory(Example)
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instance1 = provider()
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instance2 = provider()
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_init_positional_args(self):
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provider = providers.Factory(Example, 'i1', 'i2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.init_arg1, 'i1')
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self.assertEqual(instance1.init_arg2, 'i2')
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self.assertEqual(instance2.init_arg1, 'i1')
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self.assertEqual(instance2.init_arg2, 'i2')
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_init_keyword_args(self):
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provider = providers.Factory(Example, init_arg1='i1', init_arg2='i2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.init_arg1, 'i1')
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self.assertEqual(instance1.init_arg2, 'i2')
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self.assertEqual(instance2.init_arg1, 'i1')
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self.assertEqual(instance2.init_arg2, 'i2')
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_init_positional_and_keyword_args(self):
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provider = providers.Factory(Example, 'i1', init_arg2='i2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.init_arg1, 'i1')
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self.assertEqual(instance1.init_arg2, 'i2')
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self.assertEqual(instance2.init_arg1, 'i1')
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self.assertEqual(instance2.init_arg2, 'i2')
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_attributes(self):
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provider = providers.Factory(Example)
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provider.add_attributes(attribute1='a1', attribute2='a2')
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instance1 = provider()
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instance2 = provider()
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self.assertEqual(instance1.attribute1, 'a1')
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self.assertEqual(instance1.attribute2, 'a2')
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self.assertEqual(instance2.attribute1, 'a1')
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self.assertEqual(instance2.attribute2, 'a2')
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, Example)
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self.assertIsInstance(instance2, Example)
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def test_call_with_context_args(self):
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provider = providers.Factory(Example, 11, 22)
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instance = provider(33, 44)
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self.assertEqual(instance.init_arg1, 11)
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self.assertEqual(instance.init_arg2, 22)
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self.assertEqual(instance.init_arg3, 33)
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self.assertEqual(instance.init_arg4, 44)
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def test_call_with_context_kwargs(self):
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provider = providers.Factory(Example, init_arg1=1)
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instance1 = provider(init_arg2=22)
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self.assertEqual(instance1.init_arg1, 1)
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self.assertEqual(instance1.init_arg2, 22)
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instance2 = provider(init_arg1=11, init_arg2=22)
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self.assertEqual(instance2.init_arg1, 11)
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self.assertEqual(instance2.init_arg2, 22)
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def test_call_with_context_args_and_kwargs(self):
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provider = providers.Factory(Example, 11)
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instance = provider(22, init_arg3=33, init_arg4=44)
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self.assertEqual(instance.init_arg1, 11)
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self.assertEqual(instance.init_arg2, 22)
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self.assertEqual(instance.init_arg3, 33)
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self.assertEqual(instance.init_arg4, 44)
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def test_call_with_deep_context_kwargs(self):
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"""`Factory` providers deep init injections example."""
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class Regularizer:
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def __init__(self, alpha):
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self.alpha = alpha
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class Loss:
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def __init__(self, regularizer):
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self.regularizer = regularizer
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class ClassificationTask:
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def __init__(self, loss):
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self.loss = loss
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class Algorithm:
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def __init__(self, task):
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self.task = task
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algorithm_factory = providers.Factory(
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Algorithm,
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task=providers.Factory(
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ClassificationTask,
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loss=providers.Factory(
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Loss,
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regularizer=providers.Factory(
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Regularizer,
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),
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),
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),
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)
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algorithm_1 = algorithm_factory(task__loss__regularizer__alpha=0.5)
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algorithm_2 = algorithm_factory(task__loss__regularizer__alpha=0.7)
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algorithm_3 = algorithm_factory(task__loss__regularizer=Regularizer(alpha=0.8))
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self.assertEqual(algorithm_1.task.loss.regularizer.alpha, 0.5)
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self.assertEqual(algorithm_2.task.loss.regularizer.alpha, 0.7)
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self.assertEqual(algorithm_3.task.loss.regularizer.alpha, 0.8)
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def test_fluent_interface(self):
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provider = providers.Factory(Example) \
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.add_args(1, 2) \
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.add_kwargs(init_arg3=3, init_arg4=4) \
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.add_attributes(attribute1=5, attribute2=6)
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instance = provider()
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self.assertEqual(instance.init_arg1, 1)
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self.assertEqual(instance.init_arg2, 2)
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self.assertEqual(instance.init_arg3, 3)
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self.assertEqual(instance.init_arg4, 4)
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self.assertEqual(instance.attribute1, 5)
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self.assertEqual(instance.attribute2, 6)
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def test_set_args(self):
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provider = providers.Factory(Example) \
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.add_args(1, 2) \
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.set_args(3, 4)
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self.assertEqual(provider.args, (3, 4))
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def test_set_kwargs(self):
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provider = providers.Factory(Example) \
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.add_kwargs(init_arg3=3, init_arg4=4) \
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.set_kwargs(init_arg3=4, init_arg4=5)
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self.assertEqual(provider.kwargs, dict(init_arg3=4, init_arg4=5))
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def test_set_attributes(self):
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provider = providers.Factory(Example) \
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.add_attributes(attribute1=5, attribute2=6) \
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.set_attributes(attribute1=6, attribute2=7)
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self.assertEqual(provider.attributes, dict(attribute1=6, attribute2=7))
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def test_clear_args(self):
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provider = providers.Factory(Example) \
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.add_args(1, 2) \
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.clear_args()
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self.assertEqual(provider.args, tuple())
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def test_clear_kwargs(self):
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provider = providers.Factory(Example) \
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.add_kwargs(init_arg3=3, init_arg4=4) \
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.clear_kwargs()
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self.assertEqual(provider.kwargs, dict())
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def test_clear_attributes(self):
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provider = providers.Factory(Example) \
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.add_attributes(attribute1=5, attribute2=6) \
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.clear_attributes()
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self.assertEqual(provider.attributes, dict())
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def test_call_overridden(self):
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provider = providers.Factory(Example)
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overriding_provider1 = providers.Factory(dict)
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overriding_provider2 = providers.Factory(list)
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provider.override(overriding_provider1)
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provider.override(overriding_provider2)
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instance1 = provider()
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instance2 = provider()
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self.assertIsNot(instance1, instance2)
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self.assertIsInstance(instance1, list)
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self.assertIsInstance(instance2, list)
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def test_deepcopy(self):
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provider = providers.Factory(Example)
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provider_copy = providers.deepcopy(provider)
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self.assertIsNot(provider, provider_copy)
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self.assertIs(provider.cls, provider_copy.cls)
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self.assertIsInstance(provider, providers.Factory)
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def test_deepcopy_from_memo(self):
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provider = providers.Factory(Example)
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provider_copy_memo = providers.Factory(Example)
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provider_copy = providers.deepcopy(
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provider, memo={id(provider): provider_copy_memo})
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self.assertIs(provider_copy, provider_copy_memo)
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def test_deepcopy_args(self):
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provider = providers.Factory(Example)
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dependent_provider1 = providers.Factory(list)
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dependent_provider2 = providers.Factory(dict)
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provider.add_args(dependent_provider1, dependent_provider2)
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provider_copy = providers.deepcopy(provider)
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dependent_provider_copy1 = provider_copy.args[0]
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dependent_provider_copy2 = provider_copy.args[1]
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self.assertNotEqual(provider.args, provider_copy.args)
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self.assertIs(dependent_provider1.cls, dependent_provider_copy1.cls)
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self.assertIsNot(dependent_provider1, dependent_provider_copy1)
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self.assertIs(dependent_provider2.cls, dependent_provider_copy2.cls)
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self.assertIsNot(dependent_provider2, dependent_provider_copy2)
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def test_deepcopy_kwargs(self):
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provider = providers.Factory(Example)
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dependent_provider1 = providers.Factory(list)
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dependent_provider2 = providers.Factory(dict)
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provider.add_kwargs(a1=dependent_provider1, a2=dependent_provider2)
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provider_copy = providers.deepcopy(provider)
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dependent_provider_copy1 = provider_copy.kwargs['a1']
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dependent_provider_copy2 = provider_copy.kwargs['a2']
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self.assertNotEqual(provider.kwargs, provider_copy.kwargs)
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self.assertIs(dependent_provider1.cls, dependent_provider_copy1.cls)
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self.assertIsNot(dependent_provider1, dependent_provider_copy1)
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self.assertIs(dependent_provider2.cls, dependent_provider_copy2.cls)
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self.assertIsNot(dependent_provider2, dependent_provider_copy2)
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def test_deepcopy_attributes(self):
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provider = providers.Factory(Example)
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dependent_provider1 = providers.Factory(list)
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dependent_provider2 = providers.Factory(dict)
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provider.add_attributes(a1=dependent_provider1, a2=dependent_provider2)
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provider_copy = providers.deepcopy(provider)
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dependent_provider_copy1 = provider_copy.attributes['a1']
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dependent_provider_copy2 = provider_copy.attributes['a2']
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self.assertNotEqual(provider.attributes, provider_copy.attributes)
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self.assertIs(dependent_provider1.cls, dependent_provider_copy1.cls)
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self.assertIsNot(dependent_provider1, dependent_provider_copy1)
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self.assertIs(dependent_provider2.cls, dependent_provider_copy2.cls)
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self.assertIsNot(dependent_provider2, dependent_provider_copy2)
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def test_deepcopy_overridden(self):
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provider = providers.Factory(Example)
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object_provider = providers.Object(object())
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provider.override(object_provider)
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provider_copy = providers.deepcopy(provider)
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object_provider_copy = provider_copy.overridden[0]
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self.assertIsNot(provider, provider_copy)
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self.assertIs(provider.cls, provider_copy.cls)
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self.assertIsInstance(provider, providers.Factory)
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self.assertIsNot(object_provider, object_provider_copy)
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self.assertIsInstance(object_provider_copy, providers.Object)
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def test_deepcopy_with_sys_streams(self):
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provider = providers.Factory(Example)
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provider.add_args(sys.stdin)
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provider.add_kwargs(a2=sys.stdout)
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provider.add_attributes(a3=sys.stderr)
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provider_copy = providers.deepcopy(provider)
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self.assertIsNot(provider, provider_copy)
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self.assertIsInstance(provider_copy, providers.Factory)
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self.assertIs(provider.args[0], sys.stdin)
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self.assertIs(provider.kwargs['a2'], sys.stdout)
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self.assertIs(provider.attributes['a3'], sys.stderr)
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def test_repr(self):
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provider = providers.Factory(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'Factory({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class DelegatedFactoryTests(unittest.TestCase):
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def test_inheritance(self):
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self.assertIsInstance(providers.DelegatedFactory(object),
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providers.Factory)
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def test_is_provider(self):
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self.assertTrue(
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providers.is_provider(providers.DelegatedFactory(object)))
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def test_is_delegated_provider(self):
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self.assertTrue(
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providers.is_delegated(providers.DelegatedFactory(object)))
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def test_repr(self):
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provider = providers.DelegatedFactory(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'DelegatedFactory({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class AbstractFactoryTests(unittest.TestCase):
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def test_inheritance(self):
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self.assertIsInstance(providers.AbstractFactory(Example),
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providers.Factory)
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def test_call_overridden_by_factory(self):
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provider = providers.AbstractFactory(object)
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provider.override(providers.Factory(Example))
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self.assertIsInstance(provider(), Example)
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def test_call_overridden_by_delegated_factory(self):
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provider = providers.AbstractFactory(object)
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provider.override(providers.DelegatedFactory(Example))
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self.assertIsInstance(provider(), Example)
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def test_call_not_overridden(self):
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provider = providers.AbstractFactory(object)
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with self.assertRaises(errors.Error):
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provider()
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def test_override_by_not_factory(self):
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provider = providers.AbstractFactory(object)
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with self.assertRaises(errors.Error):
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provider.override(providers.Callable(object))
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def test_provide_not_implemented(self):
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provider = providers.AbstractFactory(Example)
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with self.assertRaises(NotImplementedError):
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provider._provide(tuple(), dict())
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def test_repr(self):
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provider = providers.AbstractFactory(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'AbstractFactory({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class FactoryDelegateTests(unittest.TestCase):
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def setUp(self):
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self.delegated = providers.Factory(object)
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self.delegate = providers.FactoryDelegate(self.delegated)
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def test_is_delegate(self):
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self.assertIsInstance(self.delegate, providers.Delegate)
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def test_init_with_not_factory(self):
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self.assertRaises(errors.Error,
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providers.FactoryDelegate,
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providers.Object(object()))
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class FactoryAggregateTests(unittest.TestCase):
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class ExampleA(Example):
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pass
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class ExampleB(Example):
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pass
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def setUp(self):
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self.example_a_factory = providers.Factory(self.ExampleA)
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self.example_b_factory = providers.Factory(self.ExampleB)
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self.factory_aggregate = providers.FactoryAggregate(
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example_a=self.example_a_factory,
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example_b=self.example_b_factory)
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def test_is_provider(self):
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self.assertTrue(providers.is_provider(self.factory_aggregate))
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def test_is_delegated_provider(self):
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self.assertTrue(providers.is_delegated(self.factory_aggregate))
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def test_init_with_not_a_factory(self):
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with self.assertRaises(errors.Error):
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providers.FactoryAggregate(
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example_a=providers.Factory(self.ExampleA),
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example_b=object())
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def test_init_optional_factories(self):
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provider = providers.FactoryAggregate()
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provider.set_factories(
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example_a=self.example_a_factory,
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example_b=self.example_b_factory,
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)
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self.assertEqual(
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provider.factories,
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|
{
|
|
'example_a': self.example_a_factory,
|
|
'example_b': self.example_b_factory,
|
|
},
|
|
)
|
|
self.assertIsInstance(provider('example_a'), self.ExampleA)
|
|
self.assertIsInstance(provider('example_b'), self.ExampleB)
|
|
|
|
def test_set_provides_returns_self(self):
|
|
provider = providers.FactoryAggregate()
|
|
self.assertIs(provider.set_factories(example_a=self.example_a_factory), provider)
|
|
|
|
def test_call(self):
|
|
object_a = self.factory_aggregate('example_a',
|
|
1, 2, init_arg3=3, init_arg4=4)
|
|
object_b = self.factory_aggregate('example_b',
|
|
11, 22, init_arg3=33, init_arg4=44)
|
|
|
|
self.assertIsInstance(object_a, self.ExampleA)
|
|
self.assertEqual(object_a.init_arg1, 1)
|
|
self.assertEqual(object_a.init_arg2, 2)
|
|
self.assertEqual(object_a.init_arg3, 3)
|
|
self.assertEqual(object_a.init_arg4, 4)
|
|
|
|
self.assertIsInstance(object_b, self.ExampleB)
|
|
self.assertEqual(object_b.init_arg1, 11)
|
|
self.assertEqual(object_b.init_arg2, 22)
|
|
self.assertEqual(object_b.init_arg3, 33)
|
|
self.assertEqual(object_b.init_arg4, 44)
|
|
|
|
def test_call_factory_name_as_kwarg(self):
|
|
object_a = self.factory_aggregate(
|
|
factory_name='example_a',
|
|
init_arg1=1,
|
|
init_arg2=2,
|
|
init_arg3=3,
|
|
init_arg4=4,
|
|
)
|
|
self.assertIsInstance(object_a, self.ExampleA)
|
|
self.assertEqual(object_a.init_arg1, 1)
|
|
self.assertEqual(object_a.init_arg2, 2)
|
|
self.assertEqual(object_a.init_arg3, 3)
|
|
self.assertEqual(object_a.init_arg4, 4)
|
|
|
|
def test_call_no_factory_name(self):
|
|
with self.assertRaises(TypeError):
|
|
self.factory_aggregate()
|
|
|
|
def test_call_no_such_provider(self):
|
|
with self.assertRaises(errors.NoSuchProviderError):
|
|
self.factory_aggregate('unknown')
|
|
|
|
def test_overridden(self):
|
|
with self.assertRaises(errors.Error):
|
|
self.factory_aggregate.override(providers.Object(object()))
|
|
|
|
def test_getattr(self):
|
|
self.assertIs(self.factory_aggregate.example_a, self.example_a_factory)
|
|
self.assertIs(self.factory_aggregate.example_b, self.example_b_factory)
|
|
|
|
def test_getattr_no_such_provider(self):
|
|
with self.assertRaises(errors.NoSuchProviderError):
|
|
self.factory_aggregate.unknown
|
|
|
|
def test_factories(self):
|
|
self.assertDictEqual(self.factory_aggregate.factories,
|
|
dict(example_a=self.example_a_factory,
|
|
example_b=self.example_b_factory))
|
|
|
|
def test_deepcopy(self):
|
|
provider_copy = providers.deepcopy(self.factory_aggregate)
|
|
|
|
self.assertIsNot(self.factory_aggregate, provider_copy)
|
|
self.assertIsInstance(provider_copy, type(self.factory_aggregate))
|
|
|
|
self.assertIsNot(self.factory_aggregate.example_a, provider_copy.example_a)
|
|
self.assertIsInstance(self.factory_aggregate.example_a, type(provider_copy.example_a))
|
|
self.assertIs(self.factory_aggregate.example_a.cls, provider_copy.example_a.cls)
|
|
|
|
self.assertIsNot(self.factory_aggregate.example_b, provider_copy.example_b)
|
|
self.assertIsInstance(self.factory_aggregate.example_b, type(provider_copy.example_b))
|
|
self.assertIs(self.factory_aggregate.example_b.cls, provider_copy.example_b.cls)
|
|
|
|
def test_repr(self):
|
|
self.assertEqual(repr(self.factory_aggregate),
|
|
'<dependency_injector.providers.'
|
|
'FactoryAggregate({0}) at {1}>'.format(
|
|
repr(self.factory_aggregate.factories),
|
|
hex(id(self.factory_aggregate))))
|