mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2025-10-31 16:07:51 +03:00
36bfd2ed58
* Improve resource subclasses typing and make shutdown definition optional * Update mypy tests
666 lines
21 KiB
Python
666 lines
21 KiB
Python
"""Dependency injector resource provider unit tests."""
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import asyncio
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import inspect
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import unittest
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from typing import Any
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from dependency_injector import containers, providers, resources, errors
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# Runtime import to get asyncutils module
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import os
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_TOP_DIR = os.path.abspath(
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os.path.sep.join((
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os.path.dirname(__file__),
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'../',
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)),
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)
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import sys
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sys.path.append(_TOP_DIR)
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from asyncutils import AsyncTestCase
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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_init_optional_provides(self):
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provider = providers.Resource()
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provider.set_provides(init_fn)
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self.assertIs(provider.provides, init_fn)
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self.assertEqual(provider(), (tuple(), dict()))
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def test_set_provides_returns_self(self):
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provider = providers.Resource()
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self.assertIs(provider.set_provides(init_fn), provider)
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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_class_generic_typing(self):
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# See issue: https://github.com/ets-labs/python-dependency-injector/issues/488
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class TestDependency:
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...
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class TestResource(resources.Resource[TestDependency]):
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def init(self, *args: Any, **kwargs: Any) -> TestDependency:
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return TestDependency()
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def shutdown(self, resource: TestDependency) -> None: ...
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self.assertTrue(issubclass(TestResource, resources.Resource))
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def test_init_class_abc_init_definition_is_required(self):
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class TestResource(resources.Resource):
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...
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with self.assertRaises(TypeError) as context:
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TestResource()
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self.assertIn("Can't instantiate abstract class TestResource", str(context.exception))
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self.assertIn("init", str(context.exception))
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def test_init_class_abc_shutdown_definition_is_not_required(self):
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class TestResource(resources.Resource):
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def init(self):
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...
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self.assertTrue(hasattr(TestResource(), 'shutdown'))
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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_shutdown_of_not_initialized(self):
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def _init():
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yield
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provider = providers.Resource(_init)
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result = provider.shutdown()
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self.assertIsNone(result)
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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, (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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'<dependency_injector.providers.Resource({0}) at {1}>'.format(
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repr(init_fn),
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hex(id(provider)),
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)
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)
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class AsyncResourceTest(AsyncTestCase):
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def test_init_async_function(self):
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resource = object()
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async def _init():
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await asyncio.sleep(0.001)
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_init.counter += 1
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return resource
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_init.counter = 0
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provider = providers.Resource(_init)
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result1 = self._run(provider())
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self.assertIs(result1, resource)
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self.assertEqual(_init.counter, 1)
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result2 = self._run(provider())
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self.assertIs(result2, resource)
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self.assertEqual(_init.counter, 1)
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self._run(provider.shutdown())
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def test_init_async_generator(self):
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resource = object()
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async def _init():
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await asyncio.sleep(0.001)
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_init.init_counter += 1
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yield resource
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await asyncio.sleep(0.001)
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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 = self._run(provider())
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self.assertIs(result1, resource)
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self.assertEqual(_init.init_counter, 1)
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self.assertEqual(_init.shutdown_counter, 0)
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self._run(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 = self._run(provider())
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self.assertIs(result2, resource)
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self.assertEqual(_init.init_counter, 2)
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self.assertEqual(_init.shutdown_counter, 1)
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self._run(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_async_class(self):
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resource = object()
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class TestResource(resources.AsyncResource):
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init_counter = 0
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shutdown_counter = 0
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async def init(self):
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await asyncio.sleep(0.001)
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self.__class__.init_counter += 1
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return resource
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async def shutdown(self, resource_):
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await asyncio.sleep(0.001)
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self.__class__.shutdown_counter += 1
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assert resource_ is resource
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provider = providers.Resource(TestResource)
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result1 = self._run(provider())
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self.assertIs(result1, resource)
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self.assertEqual(TestResource.init_counter, 1)
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self.assertEqual(TestResource.shutdown_counter, 0)
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self._run(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 = self._run(provider())
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self.assertIs(result2, resource)
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self.assertEqual(TestResource.init_counter, 2)
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self.assertEqual(TestResource.shutdown_counter, 1)
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self._run(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_async_class_generic_typing(self):
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# See issue: https://github.com/ets-labs/python-dependency-injector/issues/488
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class TestDependency:
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...
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class TestAsyncResource(resources.AsyncResource[TestDependency]):
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async def init(self, *args: Any, **kwargs: Any) -> TestDependency:
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return TestDependency()
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async def shutdown(self, resource: TestDependency) -> None: ...
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self.assertTrue(issubclass(TestAsyncResource, resources.AsyncResource))
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def test_init_async_class_abc_init_definition_is_required(self):
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class TestAsyncResource(resources.AsyncResource):
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...
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with self.assertRaises(TypeError) as context:
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TestAsyncResource()
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self.assertIn("Can't instantiate abstract class TestAsyncResource", str(context.exception))
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self.assertIn("init", str(context.exception))
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def test_init_async_class_abc_shutdown_definition_is_not_required(self):
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class TestAsyncResource(resources.AsyncResource):
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async def init(self):
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...
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self.assertTrue(hasattr(TestAsyncResource(), 'shutdown'))
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self.assertTrue(inspect.iscoroutinefunction(TestAsyncResource.shutdown))
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def test_init_with_error(self):
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async def _init():
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raise RuntimeError()
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provider = providers.Resource(_init)
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future = provider()
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self.assertTrue(provider.initialized)
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self.assertTrue(provider.is_async_mode_enabled())
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with self.assertRaises(RuntimeError):
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self._run(future)
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self.assertFalse(provider.initialized)
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self.assertTrue(provider.is_async_mode_enabled())
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def test_init_async_gen_with_error(self):
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async def _init():
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raise RuntimeError()
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yield
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provider = providers.Resource(_init)
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future = provider()
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self.assertTrue(provider.initialized)
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self.assertTrue(provider.is_async_mode_enabled())
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with self.assertRaises(RuntimeError):
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self._run(future)
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self.assertFalse(provider.initialized)
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self.assertTrue(provider.is_async_mode_enabled())
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def test_init_async_subclass_with_error(self):
|
|
class _Resource(resources.AsyncResource):
|
|
async def init(self):
|
|
raise RuntimeError()
|
|
|
|
async def shutdown(self, resource):
|
|
pass
|
|
|
|
provider = providers.Resource(_Resource)
|
|
|
|
future = provider()
|
|
self.assertTrue(provider.initialized)
|
|
self.assertTrue(provider.is_async_mode_enabled())
|
|
|
|
with self.assertRaises(RuntimeError):
|
|
self._run(future)
|
|
|
|
self.assertFalse(provider.initialized)
|
|
self.assertTrue(provider.is_async_mode_enabled())
|
|
|
|
def test_init_with_dependency_to_other_resource(self):
|
|
# See: https://github.com/ets-labs/python-dependency-injector/issues/361
|
|
async def init_db_connection(db_url: str):
|
|
await asyncio.sleep(0.001)
|
|
yield {'connection': 'ok', 'url': db_url}
|
|
|
|
async def init_user_session(db):
|
|
await asyncio.sleep(0.001)
|
|
yield {'session': 'ok', 'db': db}
|
|
|
|
class Container(containers.DeclarativeContainer):
|
|
config = providers.Configuration()
|
|
|
|
db_connection = providers.Resource(
|
|
init_db_connection,
|
|
db_url=config.db_url,
|
|
)
|
|
|
|
user_session = providers.Resource(
|
|
init_user_session,
|
|
db=db_connection
|
|
)
|
|
|
|
async def main():
|
|
container = Container(config={'db_url': 'postgres://...'})
|
|
try:
|
|
return await container.user_session()
|
|
finally:
|
|
await container.shutdown_resources()
|
|
|
|
result = self._run(main())
|
|
|
|
self.assertEqual(
|
|
result,
|
|
{'session': 'ok', 'db': {'connection': 'ok', 'url': 'postgres://...'}},
|
|
)
|
|
|
|
def test_init_and_shutdown_methods(self):
|
|
async def _init():
|
|
await asyncio.sleep(0.001)
|
|
_init.init_counter += 1
|
|
|
|
yield
|
|
|
|
await asyncio.sleep(0.001)
|
|
_init.shutdown_counter += 1
|
|
|
|
_init.init_counter = 0
|
|
_init.shutdown_counter = 0
|
|
|
|
provider = providers.Resource(_init)
|
|
|
|
self._run(provider.init())
|
|
self.assertEqual(_init.init_counter, 1)
|
|
self.assertEqual(_init.shutdown_counter, 0)
|
|
|
|
self._run(provider.shutdown())
|
|
self.assertEqual(_init.init_counter, 1)
|
|
self.assertEqual(_init.shutdown_counter, 1)
|
|
|
|
self._run(provider.init())
|
|
self.assertEqual(_init.init_counter, 2)
|
|
self.assertEqual(_init.shutdown_counter, 1)
|
|
|
|
self._run(provider.shutdown())
|
|
self.assertEqual(_init.init_counter, 2)
|
|
self.assertEqual(_init.shutdown_counter, 2)
|
|
|
|
def test_shutdown_of_not_initialized(self):
|
|
async def _init():
|
|
yield
|
|
|
|
provider = providers.Resource(_init)
|
|
provider.enable_async_mode()
|
|
|
|
result = self._run(provider.shutdown())
|
|
self.assertIsNone(result)
|
|
|
|
def test_concurrent_init(self):
|
|
resource = object()
|
|
|
|
async def _init():
|
|
await asyncio.sleep(0.001)
|
|
_init.counter += 1
|
|
return resource
|
|
_init.counter = 0
|
|
|
|
provider = providers.Resource(_init)
|
|
|
|
result1, result2 = self._run(
|
|
asyncio.gather(
|
|
provider(),
|
|
provider()
|
|
),
|
|
)
|
|
|
|
self.assertIs(result1, resource)
|
|
self.assertEqual(_init.counter, 1)
|
|
|
|
self.assertIs(result2, resource)
|
|
self.assertEqual(_init.counter, 1)
|