mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-12-04 23:44:05 +03:00
47c79b2772
* Add prototype * Add example * Remove typing erros in Python 2.7 and 3.4 * Move resources example * Draft resources docs * Update resources docs * Fix repr * Rename dict provider test * Add more tests * Add tests + refactoring * Add more tests * Update tests to run only on 3.5+ * Update setup.py * Add typing tests * Update changelog * Fix generator iteration * Remove contextlib * Hotfix aiohttp issue * Move aiohttp fix to tox.ini * Move aiohttp fix to a different place in tox
323 lines
10 KiB
Python
323 lines
10 KiB
Python
"""Dependency injector resource provider unit tests."""
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import sys
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import unittest2 as unittest
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from dependency_injector import containers, providers, resources, errors
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def init_fn(*args, **kwargs):
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return args, kwargs
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class ResourceTests(unittest.TestCase):
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def test_is_provider(self):
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self.assertTrue(providers.is_provider(providers.Resource(init_fn)))
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def test_provided_instance_provider(self):
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provider = providers.Resource(init_fn)
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self.assertIsInstance(provider.provided, providers.ProvidedInstance)
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def test_injection(self):
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resource = object()
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def _init():
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_init.counter += 1
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return resource
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_init.counter = 0
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class Container(containers.DeclarativeContainer):
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resource = providers.Resource(_init)
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dependency1 = providers.List(resource)
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dependency2 = providers.List(resource)
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container = Container()
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list1 = container.dependency1()
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list2 = container.dependency2()
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self.assertEqual(list1, [resource])
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self.assertIs(list1[0], resource)
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self.assertEqual(list2, [resource])
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self.assertIs(list2[0], resource)
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self.assertEqual(_init.counter, 1)
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def test_init_function(self):
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def _init():
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_init.counter += 1
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_init.counter = 0
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provider = providers.Resource(_init)
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result1 = provider()
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self.assertIsNone(result1)
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self.assertEqual(_init.counter, 1)
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result2 = provider()
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self.assertIsNone(result2)
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self.assertEqual(_init.counter, 1)
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provider.shutdown()
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def test_init_generator(self):
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def _init():
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_init.init_counter += 1
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yield
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_init.shutdown_counter += 1
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_init.init_counter = 0
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_init.shutdown_counter = 0
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provider = providers.Resource(_init)
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result1 = provider()
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self.assertIsNone(result1)
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self.assertEqual(_init.init_counter, 1)
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self.assertEqual(_init.shutdown_counter, 0)
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provider.shutdown()
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self.assertEqual(_init.init_counter, 1)
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self.assertEqual(_init.shutdown_counter, 1)
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result2 = provider()
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self.assertIsNone(result2)
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self.assertEqual(_init.init_counter, 2)
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self.assertEqual(_init.shutdown_counter, 1)
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provider.shutdown()
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self.assertEqual(_init.init_counter, 2)
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self.assertEqual(_init.shutdown_counter, 2)
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def test_init_class(self):
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class TestResource(resources.Resource):
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init_counter = 0
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shutdown_counter = 0
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def init(self):
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self.__class__.init_counter += 1
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def shutdown(self, _):
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self.__class__.shutdown_counter += 1
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provider = providers.Resource(TestResource)
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result1 = provider()
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self.assertIsNone(result1)
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self.assertEqual(TestResource.init_counter, 1)
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self.assertEqual(TestResource.shutdown_counter, 0)
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provider.shutdown()
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self.assertEqual(TestResource.init_counter, 1)
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self.assertEqual(TestResource.shutdown_counter, 1)
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result2 = provider()
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self.assertIsNone(result2)
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self.assertEqual(TestResource.init_counter, 2)
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self.assertEqual(TestResource.shutdown_counter, 1)
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provider.shutdown()
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self.assertEqual(TestResource.init_counter, 2)
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self.assertEqual(TestResource.shutdown_counter, 2)
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def test_init_not_callable(self):
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provider = providers.Resource(1)
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with self.assertRaises(errors.Error):
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provider.init()
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def test_init_and_shutdown(self):
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def _init():
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_init.init_counter += 1
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yield
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_init.shutdown_counter += 1
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_init.init_counter = 0
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_init.shutdown_counter = 0
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provider = providers.Resource(_init)
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result1 = provider.init()
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self.assertIsNone(result1)
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self.assertEqual(_init.init_counter, 1)
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self.assertEqual(_init.shutdown_counter, 0)
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provider.shutdown()
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self.assertEqual(_init.init_counter, 1)
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self.assertEqual(_init.shutdown_counter, 1)
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result2 = provider.init()
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self.assertIsNone(result2)
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self.assertEqual(_init.init_counter, 2)
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self.assertEqual(_init.shutdown_counter, 1)
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provider.shutdown()
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self.assertEqual(_init.init_counter, 2)
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self.assertEqual(_init.shutdown_counter, 2)
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def test_initialized(self):
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provider = providers.Resource(init_fn)
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self.assertFalse(provider.initialized)
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provider.init()
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self.assertTrue(provider.initialized)
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provider.shutdown()
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self.assertFalse(provider.initialized)
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def test_call_with_context_args(self):
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provider = providers.Resource(init_fn, 'i1', 'i2')
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self.assertEqual(provider('i3', i4=4), (('i1', 'i2', 'i3'), {'i4': 4}))
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def test_fluent_interface(self):
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provider = providers.Resource(init_fn) \
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.add_args(1, 2) \
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.add_kwargs(a3=3, a4=4)
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self.assertEqual(provider(), ((1, 2), {'a3': 3, 'a4': 4}))
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def test_set_args(self):
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provider = providers.Resource(init_fn) \
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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_clear_args(self):
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provider = providers.Resource(init_fn) \
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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_set_kwargs(self):
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provider = providers.Resource(init_fn) \
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.add_kwargs(a1='i1', a2='i2') \
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.set_kwargs(a3='i3', a4='i4')
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self.assertEqual(provider.kwargs, {'a3': 'i3', 'a4': 'i4'})
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def test_clear_kwargs(self):
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provider = providers.Resource(init_fn) \
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.add_kwargs(a1='i1', a2='i2') \
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.clear_kwargs()
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self.assertEqual(provider.kwargs, {})
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def test_call_overridden(self):
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provider = providers.Resource(init_fn, 1)
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overriding_provider1 = providers.Resource(init_fn, 2)
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overriding_provider2 = providers.Resource(init_fn, 3)
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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.assertEqual(instance1, ((3,), {}))
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self.assertEqual(instance2, ((3,), {}))
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def test_deepcopy(self):
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provider = providers.Resource(init_fn, 1, 2, a3=3, a4=4)
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provider_copy = providers.deepcopy(provider)
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self.assertIsNot(provider, provider_copy)
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self.assertEqual(provider.args, provider_copy.args)
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self.assertEqual(provider.kwargs, provider_copy.kwargs)
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self.assertIsInstance(provider, providers.Resource)
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def test_deepcopy_initialized(self):
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provider = providers.Resource(init_fn)
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provider.init()
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with self.assertRaises(errors.Error):
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providers.deepcopy(provider)
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def test_deepcopy_from_memo(self):
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provider = providers.Resource(init_fn)
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provider_copy_memo = providers.Resource(init_fn)
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provider_copy = providers.deepcopy(
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provider,
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memo={id(provider): provider_copy_memo},
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)
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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.Resource(init_fn)
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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.Resource(init_fn)
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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(d1=dependent_provider1, d2=dependent_provider2)
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provider_copy = providers.deepcopy(provider)
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dependent_provider_copy1 = provider_copy.kwargs['d1']
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dependent_provider_copy2 = provider_copy.kwargs['d2']
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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_overridden(self):
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provider = providers.Resource(init_fn)
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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.assertEqual(provider.args, provider_copy.args)
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self.assertIsInstance(provider, providers.Resource)
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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.Resource(init_fn)
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provider.add_args(sys.stdin, sys.stdout, 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.Resource)
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self.assertIs(provider.args[0], sys.stdin)
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self.assertIs(provider.args[1], sys.stdout)
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self.assertIs(provider.args[2], sys.stderr)
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def test_repr(self):
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provider = providers.Resource(init_fn)
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self.assertEqual(
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repr(provider),
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'Resource({0}, initialized={1})'.format(
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init_fn,
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provider.initialized,
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)
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)
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