mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2025-10-31 16:07:51 +03:00
72d5741ece
* Fix issue causing ThreadLocalSingleton provider to return None after reset * Add test for ThreadLocalSingleton provider reset functionality
539 lines
18 KiB
Python
539 lines
18 KiB
Python
"""Dependency injector singleton providers unit tests."""
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import sys
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import unittest2 as 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 _BaseSingletonTestCase(object):
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singleton_cls = None
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def test_is_provider(self):
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self.assertTrue(providers.is_provider(self.singleton_cls(Example)))
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def test_init_with_callable(self):
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self.assertTrue(self.singleton_cls(credits))
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def test_init_with_not_callable(self):
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self.assertRaises(errors.Error, self.singleton_cls, 123)
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def test_init_with_valid_provided_type(self):
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class ExampleProvider(self.singleton_cls):
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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(self.singleton_cls):
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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(self.singleton_cls):
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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_call(self):
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provider = self.singleton_cls(Example)
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instance1 = provider()
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instance2 = provider()
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self.assertIs(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 = self.singleton_cls(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.assertIs(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 = self.singleton_cls(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.assertIs(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 = self.singleton_cls(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.assertIs(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 = self.singleton_cls(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.assertIs(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 = self.singleton_cls(Example)
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instance = provider(11, 22)
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self.assertEqual(instance.init_arg1, 11)
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self.assertEqual(instance.init_arg2, 22)
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def test_call_with_context_kwargs(self):
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provider = self.singleton_cls(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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# Instance is created earlier
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instance1 = provider(init_arg1=11, 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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def test_call_with_context_args_and_kwargs(self):
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provider = self.singleton_cls(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_fluent_interface(self):
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provider = self.singleton_cls(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 = self.singleton_cls(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, tuple([3, 4]))
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def test_set_kwargs(self):
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provider = self.singleton_cls(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 = self.singleton_cls(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 = self.singleton_cls(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 = self.singleton_cls(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 = self.singleton_cls(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 = self.singleton_cls(Example)
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overriding_provider1 = self.singleton_cls(dict)
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overriding_provider2 = self.singleton_cls(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.assertIs(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 = self.singleton_cls(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, self.singleton_cls)
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def test_deepcopy_from_memo(self):
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provider = self.singleton_cls(Example)
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provider_copy_memo = self.singleton_cls(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 = self.singleton_cls(Example)
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dependent_provider1 = self.singleton_cls(list)
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dependent_provider2 = self.singleton_cls(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 = self.singleton_cls(Example)
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dependent_provider1 = self.singleton_cls(list)
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dependent_provider2 = self.singleton_cls(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 = self.singleton_cls(Example)
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dependent_provider1 = self.singleton_cls(list)
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dependent_provider2 = self.singleton_cls(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 = self.singleton_cls(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, self.singleton_cls)
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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.Singleton(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.Singleton)
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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_reset(self):
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provider = self.singleton_cls(object)
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instance1 = provider()
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self.assertIsInstance(instance1, object)
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provider.reset()
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instance2 = provider()
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self.assertIsInstance(instance2, object)
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self.assertIsNot(instance1, instance2)
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class SingletonTests(_BaseSingletonTestCase, unittest.TestCase):
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singleton_cls = providers.Singleton
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def test_repr(self):
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provider = self.singleton_cls(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'Singleton({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class DelegatedSingletonTests(_BaseSingletonTestCase, unittest.TestCase):
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singleton_cls = providers.DelegatedSingleton
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def test_is_delegated_provider(self):
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provider = self.singleton_cls(object)
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self.assertTrue(providers.is_delegated(provider))
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def test_repr(self):
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provider = self.singleton_cls(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'DelegatedSingleton({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class ThreadLocalSingletonTests(_BaseSingletonTestCase, unittest.TestCase):
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singleton_cls = providers.ThreadLocalSingleton
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def test_repr(self):
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provider = providers.ThreadLocalSingleton(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'ThreadLocalSingleton({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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def test_reset(self):
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provider = providers.ThreadLocalSingleton(Example)
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instance1 = provider()
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self.assertIsInstance(instance1, Example)
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provider.reset()
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instance2 = provider()
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self.assertIsInstance(instance2, Example)
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self.assertIsNot(instance1, instance2)
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class DelegatedThreadLocalSingletonTests(_BaseSingletonTestCase,
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unittest.TestCase):
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singleton_cls = providers.DelegatedThreadLocalSingleton
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def test_is_delegated_provider(self):
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provider = self.singleton_cls(object)
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self.assertTrue(providers.is_delegated(provider))
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def test_repr(self):
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provider = self.singleton_cls(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'DelegatedThreadLocalSingleton({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class ThreadSafeSingletonTests(_BaseSingletonTestCase, unittest.TestCase):
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singleton_cls = providers.ThreadSafeSingleton
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def test_repr(self):
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provider = self.singleton_cls(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'ThreadSafeSingleton({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class DelegatedThreadSafeSingletonTests(_BaseSingletonTestCase,
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unittest.TestCase):
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singleton_cls = providers.DelegatedThreadSafeSingleton
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def test_is_delegated_provider(self):
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provider = self.singleton_cls(object)
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self.assertTrue(providers.is_delegated(provider))
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def test_repr(self):
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provider = self.singleton_cls(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'DelegatedThreadSafeSingleton({0}) at {1}>'.format(
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repr(Example),
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hex(id(provider))))
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class AbstractSingletonTests(unittest.TestCase):
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def test_inheritance(self):
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self.assertIsInstance(providers.AbstractSingleton(Example),
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providers.BaseSingleton)
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def test_call_overridden_by_singleton(self):
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provider = providers.AbstractSingleton(object)
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provider.override(providers.Singleton(Example))
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self.assertIsInstance(provider(), Example)
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def test_call_overridden_by_delegated_singleton(self):
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provider = providers.AbstractSingleton(object)
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provider.override(providers.DelegatedSingleton(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.AbstractSingleton(object)
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with self.assertRaises(errors.Error):
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provider()
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def test_reset_overridden(self):
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provider = providers.AbstractSingleton(object)
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provider.override(providers.Singleton(Example))
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instance1 = provider()
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provider.reset()
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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_reset_not_overridden(self):
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provider = providers.AbstractSingleton(object)
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with self.assertRaises(errors.Error):
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provider.reset()
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def test_override_by_not_singleton(self):
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provider = providers.AbstractSingleton(object)
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with self.assertRaises(errors.Error):
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provider.override(providers.Factory(object))
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def test_repr(self):
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provider = providers.AbstractSingleton(Example)
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self.assertEqual(repr(provider),
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'<dependency_injector.providers.'
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'AbstractSingleton({0}) at {1}>'.format(
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repr(Example),
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|
hex(id(provider))))
|
|
|
|
|
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class SingletonDelegateTests(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
self.delegated = providers.Singleton(Example)
|
|
self.delegate = providers.SingletonDelegate(self.delegated)
|
|
|
|
def test_is_delegate(self):
|
|
self.assertIsInstance(self.delegate, providers.Delegate)
|
|
|
|
def test_init_with_not_singleton(self):
|
|
self.assertRaises(errors.Error,
|
|
providers.SingletonDelegate,
|
|
providers.Object(object()))
|