mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2025-05-22 13:36:15 +03:00
308 lines
7.5 KiB
Python
308 lines
7.5 KiB
Python
"""Resource provider async tests."""
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import asyncio
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import inspect
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import sys
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from typing import Any
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from dependency_injector import containers, providers, resources
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from pytest import mark, raises
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@mark.asyncio
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async def test_init_async_function():
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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 = await provider()
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assert result1 is resource
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assert _init.counter == 1
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result2 = await provider()
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assert result2 is resource
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assert _init.counter == 1
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await provider.shutdown()
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@mark.asyncio
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async def test_init_async_generator():
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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 = await provider()
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assert result1 is resource
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assert _init.init_counter == 1
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assert _init.shutdown_counter == 0
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await provider.shutdown()
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assert _init.init_counter == 1
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assert _init.shutdown_counter == 1
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result2 = await provider()
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assert result2 is resource
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assert _init.init_counter == 2
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assert _init.shutdown_counter == 1
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await provider.shutdown()
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assert _init.init_counter == 2
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assert _init.shutdown_counter == 2
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@mark.asyncio
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async def test_init_async_class():
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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 = await provider()
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assert result1 is resource
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assert TestResource.init_counter == 1
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assert TestResource.shutdown_counter == 0
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await provider.shutdown()
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assert TestResource.init_counter == 1
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assert TestResource.shutdown_counter == 1
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result2 = await provider()
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assert result2 is resource
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assert TestResource.init_counter == 2
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assert TestResource.shutdown_counter == 1
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await provider.shutdown()
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assert TestResource.init_counter == 2
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assert TestResource.shutdown_counter == 2
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def test_init_async_class_generic_typing():
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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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assert issubclass(TestAsyncResource, resources.AsyncResource) is True
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def test_init_async_class_abc_init_definition_is_required():
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class TestAsyncResource(resources.AsyncResource):
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...
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with raises(TypeError) as context:
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TestAsyncResource()
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assert "Can't instantiate abstract class TestAsyncResource" in str(context.value)
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assert "init" in str(context.value)
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def test_init_async_class_abc_shutdown_definition_is_not_required():
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class TestAsyncResource(resources.AsyncResource):
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async def init(self):
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...
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assert hasattr(TestAsyncResource(), "shutdown") is True
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assert inspect.iscoroutinefunction(TestAsyncResource.shutdown) is True
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@mark.asyncio
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async def test_init_with_error():
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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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assert provider.initialized is True
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assert provider.is_async_mode_enabled() is True
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with raises(RuntimeError):
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await future
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assert provider.initialized is False
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assert provider.is_async_mode_enabled() is True
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@mark.asyncio
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async def test_init_async_gen_with_error():
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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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assert provider.initialized is True
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assert provider.is_async_mode_enabled() is True
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with raises(RuntimeError):
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await future
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assert provider.initialized is False
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assert provider.is_async_mode_enabled() is True
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@mark.asyncio
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async def test_init_async_subclass_with_error():
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class _Resource(resources.AsyncResource):
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async def init(self):
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raise RuntimeError()
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async def shutdown(self, resource):
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pass
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provider = providers.Resource(_Resource)
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future = provider()
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assert provider.initialized is True
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assert provider.is_async_mode_enabled() is True
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with raises(RuntimeError):
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await future
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assert provider.initialized is False
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assert provider.is_async_mode_enabled() is True
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@mark.asyncio
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async def test_init_with_dependency_to_other_resource():
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# See: https://github.com/ets-labs/python-dependency-injector/issues/361
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async def init_db_connection(db_url: str):
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await asyncio.sleep(0.001)
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yield {"connection": "OK", "url": db_url}
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async def init_user_session(db):
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await asyncio.sleep(0.001)
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yield {"session": "OK", "db": db}
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class Container(containers.DeclarativeContainer):
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config = providers.Configuration()
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db_connection = providers.Resource(
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init_db_connection,
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db_url=config.db_url,
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)
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user_session = providers.Resource(
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init_user_session,
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db=db_connection
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)
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async def main():
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container = Container(config={"db_url": "postgres://..."})
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try:
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return await container.user_session()
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finally:
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await container.shutdown_resources()
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result = await main()
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assert result == {"session": "OK", "db": {"connection": "OK", "url": "postgres://..."}}
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@mark.asyncio
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async def test_init_and_shutdown_methods():
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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
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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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await provider.init()
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assert _init.init_counter == 1
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assert _init.shutdown_counter == 0
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await provider.shutdown()
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assert _init.init_counter == 1
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assert _init.shutdown_counter == 1
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await provider.init()
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assert _init.init_counter == 2
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assert _init.shutdown_counter == 1
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await provider.shutdown()
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assert _init.init_counter == 2
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assert _init.shutdown_counter == 2
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@mark.asyncio
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async def test_shutdown_of_not_initialized():
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async def _init():
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yield
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provider = providers.Resource(_init)
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provider.enable_async_mode()
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result = await provider.shutdown()
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assert result is None
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@mark.asyncio
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async def test_concurrent_init():
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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, result2 = await asyncio.gather(
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provider(),
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provider()
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)
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assert result1 is resource
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assert _init.counter == 1
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assert result2 is resource
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assert _init.counter == 1
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