mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2025-10-11 22:36:40 +03:00
670 lines
23 KiB
Python
670 lines
23 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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from pytest import raises
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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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assert providers.is_provider(providers.Factory(Example)) is True
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def test_init_with_not_callable(self):
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with raises(errors.Error):
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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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assert provider.provides is object
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assert isinstance(provider(), object)
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def test_set_provides_returns_self(self):
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provider = providers.Factory()
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assert provider.set_provides(object) is 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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assert isinstance(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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assert isinstance(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 raises(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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assert isinstance(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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assert instance1 is not instance2
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assert isinstance(instance1, Example)
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assert isinstance(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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assert instance1.init_arg1 == "i1"
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assert instance1.init_arg2 == "i2"
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assert instance2.init_arg1 == "i1"
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assert instance2.init_arg2 == "i2"
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assert instance1 is not instance2
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assert isinstance(instance1, Example)
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assert isinstance(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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assert instance1.init_arg1 == "i1"
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assert instance1.init_arg2 == "i2"
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assert instance2.init_arg1 == "i1"
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assert instance2.init_arg2 == "i2"
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assert instance1 is not instance2
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assert isinstance(instance1, Example)
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assert isinstance(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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assert instance1.init_arg1 == "i1"
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assert instance1.init_arg2 == "i2"
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assert instance2.init_arg1 == "i1"
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assert instance2.init_arg2 == "i2"
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assert instance1 is not instance2
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assert isinstance(instance1, Example)
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assert isinstance(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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assert instance1.attribute1 == "a1"
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assert instance1.attribute2 == "a2"
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assert instance2.attribute1 == "a1"
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assert instance2.attribute2 == "a2"
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assert instance1 is not instance2
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assert isinstance(instance1, Example)
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assert isinstance(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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assert instance.init_arg1 == 11
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assert instance.init_arg2 == 22
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assert instance.init_arg3 == 33
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assert 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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assert instance1.init_arg1 == 1
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assert instance1.init_arg2 == 22
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instance2 = provider(init_arg1=11, init_arg2=22)
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assert instance2.init_arg1 == 11
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assert 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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assert instance.init_arg1 == 11
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assert instance.init_arg2 == 22
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assert instance.init_arg3 == 33
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assert 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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assert algorithm_1.task.loss.regularizer.alpha == 0.5
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assert algorithm_2.task.loss.regularizer.alpha == 0.7
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assert 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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assert instance.init_arg1 == 1
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assert instance.init_arg2 == 2
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assert instance.init_arg3 == 3
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assert instance.init_arg4 == 4
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assert instance.attribute1 == 5
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assert 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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assert 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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assert 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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assert 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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assert 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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assert 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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assert 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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assert instance1 is not instance2
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assert isinstance(instance1, list)
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assert isinstance(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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assert provider is not provider_copy
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assert provider.cls is provider_copy.cls
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assert isinstance(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(provider, memo={id(provider): provider_copy_memo})
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assert provider_copy is 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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assert provider.args != provider_copy.args
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assert dependent_provider1.cls is dependent_provider_copy1.cls
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assert dependent_provider1 is not dependent_provider_copy1
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assert dependent_provider2.cls is dependent_provider_copy2.cls
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assert dependent_provider2 is not 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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assert provider.kwargs != provider_copy.kwargs
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assert dependent_provider1.cls is dependent_provider_copy1.cls
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assert dependent_provider1 is not dependent_provider_copy1
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assert dependent_provider2.cls is dependent_provider_copy2.cls
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assert dependent_provider2 is not 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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assert provider.attributes != provider_copy.attributes
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assert dependent_provider1.cls is dependent_provider_copy1.cls
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assert dependent_provider1 is not dependent_provider_copy1
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assert dependent_provider2.cls is dependent_provider_copy2.cls
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assert dependent_provider2 is not 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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assert provider is not provider_copy
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assert provider.cls is provider_copy.cls
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assert isinstance(provider, providers.Factory)
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assert object_provider is not object_provider_copy
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assert isinstance(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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assert provider is not provider_copy
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assert isinstance(provider_copy, providers.Factory)
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assert provider.args[0] is sys.stdin
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assert provider.kwargs["a2"] is sys.stdout
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assert provider.attributes["a3"] is sys.stderr
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def test_repr(self):
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provider = providers.Factory(Example)
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assert repr(provider) == (
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"<dependency_injector.providers."
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"Factory({0}) at {1}>".format(repr(Example), hex(id(provider)))
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)
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class DelegatedFactoryTests(unittest.TestCase):
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def test_inheritance(self):
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assert isinstance(providers.DelegatedFactory(object),
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providers.Factory)
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def test_is_provider(self):
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assert providers.is_provider(providers.DelegatedFactory(object)) is True
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def test_is_delegated_provider(self):
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assert providers.is_delegated(providers.DelegatedFactory(object)) is True
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def test_repr(self):
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provider = providers.DelegatedFactory(Example)
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assert repr(provider) == (
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"<dependency_injector.providers."
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"DelegatedFactory({0}) at {1}>".format(repr(Example), hex(id(provider)))
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)
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class AbstractFactoryTests(unittest.TestCase):
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def test_inheritance(self):
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assert isinstance(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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assert isinstance(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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assert isinstance(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 raises(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 raises(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 raises(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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assert repr(provider) == (
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"<dependency_injector.providers."
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"AbstractFactory({0}) at {1}>".format(repr(Example), hex(id(provider)))
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)
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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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assert isinstance(self.delegate, providers.Delegate)
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def test_init_with_not_factory(self):
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with raises(errors.Error):
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providers.FactoryDelegate(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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)
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def test_is_provider(self):
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assert providers.is_provider(self.factory_aggregate) is True
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def test_is_delegated_provider(self):
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assert providers.is_delegated(self.factory_aggregate) is True
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def test_init_with_non_string_keys(self):
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factory = providers.FactoryAggregate({
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self.ExampleA: self.example_a_factory,
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self.ExampleB: self.example_b_factory,
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})
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object_a = factory(self.ExampleA, 1, 2, init_arg3=3, init_arg4=4)
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object_b = factory(self.ExampleB, 11, 22, init_arg3=33, init_arg4=44)
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assert isinstance(object_a, self.ExampleA)
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assert object_a.init_arg1 == 1
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assert object_a.init_arg2 == 2
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assert object_a.init_arg3 == 3
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assert object_a.init_arg4 == 4
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assert isinstance(object_b, self.ExampleB)
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assert object_b.init_arg1 == 11
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assert object_b.init_arg2 == 22
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assert object_b.init_arg3 == 33
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assert object_b.init_arg4 == 44
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assert factory.factories == {
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self.ExampleA: self.example_a_factory,
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self.ExampleB: self.example_b_factory,
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}
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def test_init_with_not_a_factory(self):
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with raises(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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assert provider.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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assert isinstance(provider("example_a"), self.ExampleA)
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assert isinstance(provider("example_b"), self.ExampleB)
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|
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def test_set_factories_with_non_string_keys(self):
|
|
factory = providers.FactoryAggregate()
|
|
factory.set_factories({
|
|
self.ExampleA: self.example_a_factory,
|
|
self.ExampleB: self.example_b_factory,
|
|
})
|
|
|
|
object_a = factory(self.ExampleA, 1, 2, init_arg3=3, init_arg4=4)
|
|
object_b = factory(self.ExampleB, 11, 22, init_arg3=33, init_arg4=44)
|
|
|
|
assert isinstance(object_a, self.ExampleA)
|
|
assert object_a.init_arg1 == 1
|
|
assert object_a.init_arg2 == 2
|
|
assert object_a.init_arg3 == 3
|
|
assert object_a.init_arg4 == 4
|
|
|
|
assert isinstance(object_b, self.ExampleB)
|
|
assert object_b.init_arg1 == 11
|
|
assert object_b.init_arg2 == 22
|
|
assert object_b.init_arg3 == 33
|
|
assert object_b.init_arg4 == 44
|
|
|
|
assert factory.factories == {
|
|
self.ExampleA: self.example_a_factory,
|
|
self.ExampleB: self.example_b_factory,
|
|
}
|
|
|
|
def test_set_factories_returns_self(self):
|
|
provider = providers.FactoryAggregate()
|
|
assert provider.set_factories(example_a=self.example_a_factory) is 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)
|
|
|
|
assert isinstance(object_a, self.ExampleA)
|
|
assert object_a.init_arg1 == 1
|
|
assert object_a.init_arg2 == 2
|
|
assert object_a.init_arg3 == 3
|
|
assert object_a.init_arg4 == 4
|
|
|
|
assert isinstance(object_b, self.ExampleB)
|
|
assert object_b.init_arg1 == 11
|
|
assert object_b.init_arg2 == 22
|
|
assert object_b.init_arg3 == 33
|
|
assert 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,
|
|
)
|
|
assert isinstance(object_a, self.ExampleA)
|
|
assert object_a.init_arg1 == 1
|
|
assert object_a.init_arg2 == 2
|
|
assert object_a.init_arg3 == 3
|
|
assert object_a.init_arg4 == 4
|
|
|
|
def test_call_no_factory_name(self):
|
|
with raises(TypeError):
|
|
self.factory_aggregate()
|
|
|
|
def test_call_no_such_provider(self):
|
|
with raises(errors.NoSuchProviderError):
|
|
self.factory_aggregate("unknown")
|
|
|
|
def test_overridden(self):
|
|
with raises(errors.Error):
|
|
self.factory_aggregate.override(providers.Object(object()))
|
|
|
|
def test_getattr(self):
|
|
assert self.factory_aggregate.example_a is self.example_a_factory
|
|
assert self.factory_aggregate.example_b is self.example_b_factory
|
|
|
|
def test_getattr_no_such_provider(self):
|
|
with raises(errors.NoSuchProviderError):
|
|
self.factory_aggregate.unknown
|
|
|
|
def test_factories(self):
|
|
assert 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)
|
|
|
|
assert self.factory_aggregate is not provider_copy
|
|
assert isinstance(provider_copy, type(self.factory_aggregate))
|
|
|
|
assert self.factory_aggregate.example_a is not provider_copy.example_a
|
|
assert isinstance(self.factory_aggregate.example_a, type(provider_copy.example_a))
|
|
assert self.factory_aggregate.example_a.cls is provider_copy.example_a.cls
|
|
|
|
assert self.factory_aggregate.example_b is not provider_copy.example_b
|
|
assert isinstance(self.factory_aggregate.example_b, type(provider_copy.example_b))
|
|
assert self.factory_aggregate.example_b.cls is provider_copy.example_b.cls
|
|
|
|
def test_deepcopy_with_non_string_keys(self):
|
|
factory_aggregate = providers.FactoryAggregate({
|
|
self.ExampleA: self.example_a_factory,
|
|
self.ExampleB: self.example_b_factory,
|
|
})
|
|
provider_copy = providers.deepcopy(factory_aggregate)
|
|
|
|
assert factory_aggregate is not provider_copy
|
|
assert isinstance(provider_copy, type(factory_aggregate))
|
|
|
|
assert factory_aggregate.factories[self.ExampleA] is not provider_copy.factories[self.ExampleA]
|
|
assert isinstance(factory_aggregate.factories[self.ExampleA], type(provider_copy.factories[self.ExampleA]))
|
|
assert factory_aggregate.factories[self.ExampleA].cls is provider_copy.factories[self.ExampleA].cls
|
|
|
|
assert factory_aggregate.factories[self.ExampleB] is not provider_copy.factories[self.ExampleB]
|
|
assert isinstance(factory_aggregate.factories[self.ExampleB], type(provider_copy.factories[self.ExampleB]))
|
|
assert factory_aggregate.factories[self.ExampleB].cls is provider_copy.factories[self.ExampleB].cls
|
|
|
|
def test_repr(self):
|
|
assert repr(self.factory_aggregate) == (
|
|
"<dependency_injector.providers."
|
|
"FactoryAggregate({0}) at {1}>".format(
|
|
repr(self.factory_aggregate.factories),
|
|
hex(id(self.factory_aggregate)),
|
|
)
|
|
)
|