mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-12-02 06:24:03 +03:00
573 lines
17 KiB
Python
573 lines
17 KiB
Python
import asyncio
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import random
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from dependency_injector import containers, providers, 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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RESOURCE1 = object()
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RESOURCE2 = object()
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async def init_resource(resource):
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await asyncio.sleep(random.randint(1, 10) / 1000)
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yield resource
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await asyncio.sleep(random.randint(1, 10) / 1000)
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class Client:
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def __init__(self, resource1: object, resource2: object) -> None:
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self.resource1 = resource1
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self.resource2 = resource2
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class Service:
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def __init__(self, client: Client) -> None:
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self.client = client
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class Container(containers.DeclarativeContainer):
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resource1 = providers.Resource(init_resource, providers.Object(RESOURCE1))
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resource2 = providers.Resource(init_resource, providers.Object(RESOURCE2))
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client = providers.Factory(
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Client,
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resource1=resource1,
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resource2=resource2,
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)
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service = providers.Factory(
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Service,
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client=client,
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)
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class FactoryTests(AsyncTestCase):
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def test_args_injection(self):
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class ContainerWithArgs(containers.DeclarativeContainer):
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resource1 = providers.Resource(init_resource, providers.Object(RESOURCE1))
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resource2 = providers.Resource(init_resource, providers.Object(RESOURCE2))
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client = providers.Factory(
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Client,
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resource1,
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resource2,
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)
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service = providers.Factory(
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Service,
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client,
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)
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container = ContainerWithArgs()
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client1 = self._run(container.client())
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client2 = self._run(container.client())
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self.assertIsInstance(client1, Client)
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self.assertIs(client1.resource1, RESOURCE1)
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self.assertIs(client1.resource2, RESOURCE2)
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self.assertIsInstance(client2, Client)
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self.assertIs(client2.resource1, RESOURCE1)
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self.assertIs(client2.resource2, RESOURCE2)
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service1 = self._run(container.service())
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service2 = self._run(container.service())
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self.assertIsInstance(service1, Service)
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self.assertIsInstance(service1.client, Client)
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self.assertIs(service1.client.resource1, RESOURCE1)
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self.assertIs(service1.client.resource2, RESOURCE2)
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self.assertIsInstance(service2, Service)
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self.assertIsInstance(service2.client, Client)
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self.assertIs(service2.client.resource1, RESOURCE1)
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self.assertIs(service2.client.resource2, RESOURCE2)
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self.assertIsNot(service1.client, service2.client)
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def test_kwargs_injection(self):
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container = Container()
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client1 = self._run(container.client())
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client2 = self._run(container.client())
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self.assertIsInstance(client1, Client)
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self.assertIs(client1.resource1, RESOURCE1)
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self.assertIs(client1.resource2, RESOURCE2)
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self.assertIsInstance(client2, Client)
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self.assertIs(client2.resource1, RESOURCE1)
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self.assertIs(client2.resource2, RESOURCE2)
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service1 = self._run(container.service())
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service2 = self._run(container.service())
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self.assertIsInstance(service1, Service)
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self.assertIsInstance(service1.client, Client)
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self.assertIs(service1.client.resource1, RESOURCE1)
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self.assertIs(service1.client.resource2, RESOURCE2)
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self.assertIsInstance(service2, Service)
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self.assertIsInstance(service2.client, Client)
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self.assertIs(service2.client.resource1, RESOURCE1)
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self.assertIs(service2.client.resource2, RESOURCE2)
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self.assertIsNot(service1.client, service2.client)
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def test_args_kwargs_injection(self):
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class ContainerWithArgsAndKwArgs(containers.DeclarativeContainer):
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resource1 = providers.Resource(init_resource, providers.Object(RESOURCE1))
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resource2 = providers.Resource(init_resource, providers.Object(RESOURCE2))
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client = providers.Factory(
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Client,
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resource1,
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resource2=resource2,
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)
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service = providers.Factory(
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Service,
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client=client,
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)
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container = ContainerWithArgsAndKwArgs()
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client1 = self._run(container.client())
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client2 = self._run(container.client())
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self.assertIsInstance(client1, Client)
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self.assertIs(client1.resource1, RESOURCE1)
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self.assertIs(client1.resource2, RESOURCE2)
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self.assertIsInstance(client2, Client)
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self.assertIs(client2.resource1, RESOURCE1)
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self.assertIs(client2.resource2, RESOURCE2)
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service1 = self._run(container.service())
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service2 = self._run(container.service())
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self.assertIsInstance(service1, Service)
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self.assertIsInstance(service1.client, Client)
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self.assertIs(service1.client.resource1, RESOURCE1)
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self.assertIs(service1.client.resource2, RESOURCE2)
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self.assertIsInstance(service2, Service)
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self.assertIsInstance(service2.client, Client)
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self.assertIs(service2.client.resource1, RESOURCE1)
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self.assertIs(service2.client.resource2, RESOURCE2)
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self.assertIsNot(service1.client, service2.client)
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def test_attributes_injection(self):
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class ContainerWithAttributes(containers.DeclarativeContainer):
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resource1 = providers.Resource(init_resource, providers.Object(RESOURCE1))
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resource2 = providers.Resource(init_resource, providers.Object(RESOURCE2))
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client = providers.Factory(
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Client,
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resource1,
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resource2=None,
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)
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client.add_attributes(resource2=resource2)
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service = providers.Factory(
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Service,
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client=None,
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)
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service.add_attributes(client=client)
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container = ContainerWithAttributes()
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client1 = self._run(container.client())
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client2 = self._run(container.client())
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self.assertIsInstance(client1, Client)
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self.assertIs(client1.resource1, RESOURCE1)
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self.assertIs(client1.resource2, RESOURCE2)
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self.assertIsInstance(client2, Client)
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self.assertIs(client2.resource1, RESOURCE1)
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self.assertIs(client2.resource2, RESOURCE2)
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service1 = self._run(container.service())
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service2 = self._run(container.service())
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self.assertIsInstance(service1, Service)
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self.assertIsInstance(service1.client, Client)
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self.assertIs(service1.client.resource1, RESOURCE1)
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self.assertIs(service1.client.resource2, RESOURCE2)
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self.assertIsInstance(service2, Service)
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self.assertIsInstance(service2.client, Client)
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self.assertIs(service2.client.resource1, RESOURCE1)
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self.assertIs(service2.client.resource2, RESOURCE2)
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self.assertIsNot(service1.client, service2.client)
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class SingletonTests(AsyncTestCase):
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def test_injections(self):
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class ContainerWithSingletons(containers.DeclarativeContainer):
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resource1 = providers.Resource(init_resource, providers.Object(RESOURCE1))
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resource2 = providers.Resource(init_resource, providers.Object(RESOURCE2))
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client = providers.Singleton(
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Client,
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resource1=resource1,
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resource2=resource2,
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)
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service = providers.Singleton(
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Service,
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client=client,
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)
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container = ContainerWithSingletons()
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client1 = self._run(container.client())
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client2 = self._run(container.client())
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self.assertIsInstance(client1, Client)
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self.assertIs(client1.resource1, RESOURCE1)
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self.assertIs(client1.resource2, RESOURCE2)
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self.assertIsInstance(client2, Client)
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self.assertIs(client2.resource1, RESOURCE1)
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self.assertIs(client2.resource2, RESOURCE2)
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service1 = self._run(container.service())
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service2 = self._run(container.service())
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self.assertIsInstance(service1, Service)
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self.assertIsInstance(service1.client, Client)
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self.assertIs(service1.client.resource1, RESOURCE1)
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self.assertIs(service1.client.resource2, RESOURCE2)
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self.assertIsInstance(service2, Service)
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self.assertIsInstance(service2.client, Client)
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self.assertIs(service2.client.resource1, RESOURCE1)
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self.assertIs(service2.client.resource2, RESOURCE2)
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self.assertIs(service1, service2)
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self.assertIs(service1.client, service2.client)
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self.assertIs(service1.client, client1)
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self.assertIs(service2.client, client2)
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self.assertIs(client1, client2)
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def test_async_mode(self):
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instance = object()
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async def create_instance():
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return instance
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provider = providers.Singleton(create_instance)
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instance1 = self._run(provider())
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instance2 = self._run(provider())
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self.assertIs(instance1, instance2)
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self.assertIs(instance, instance)
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class DelegatedSingletonTests(AsyncTestCase):
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def test_async_mode(self):
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instance = object()
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async def create_instance():
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return instance
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provider = providers.DelegatedSingleton(create_instance)
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instance1 = self._run(provider())
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instance2 = self._run(provider())
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self.assertIs(instance1, instance2)
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self.assertIs(instance, instance)
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class ThreadSafeSingletonTests(AsyncTestCase):
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def test_async_mode(self):
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instance = object()
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async def create_instance():
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return instance
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provider = providers.ThreadSafeSingleton(create_instance)
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instance1 = self._run(provider())
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instance2 = self._run(provider())
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self.assertIs(instance1, instance2)
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self.assertIs(instance, instance)
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class DelegatedThreadSafeSingletonTests(AsyncTestCase):
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def test_async_mode(self):
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instance = object()
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async def create_instance():
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return instance
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provider = providers.DelegatedThreadSafeSingleton(create_instance)
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instance1 = self._run(provider())
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instance2 = self._run(provider())
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self.assertIs(instance1, instance2)
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self.assertIs(instance, instance)
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class ThreadLocalSingletonTests(AsyncTestCase):
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def test_async_mode(self):
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instance = object()
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async def create_instance():
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return instance
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provider = providers.ThreadLocalSingleton(create_instance)
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instance1 = self._run(provider())
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instance2 = self._run(provider())
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self.assertIs(instance1, instance2)
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self.assertIs(instance, instance)
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class DelegatedThreadLocalSingletonTests(AsyncTestCase):
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def test_async_mode(self):
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instance = object()
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async def create_instance():
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return instance
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provider = providers.DelegatedThreadLocalSingleton(create_instance)
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instance1 = self._run(provider())
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instance2 = self._run(provider())
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self.assertIs(instance1, instance2)
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self.assertIs(instance, instance)
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class ProvidedInstanceTests(AsyncTestCase):
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def test_provided_attribute(self):
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class TestClient:
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def __init__(self, resource):
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self.resource = resource
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class TestService:
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def __init__(self, resource):
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self.resource = resource
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class TestContainer(containers.DeclarativeContainer):
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resource = providers.Resource(init_resource, providers.Object(RESOURCE1))
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client = providers.Factory(TestClient, resource=resource)
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service = providers.Factory(TestService, resource=client.provided.resource)
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container = TestContainer()
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instance1, instance2 = self._run(
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asyncio.gather(
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container.service(),
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container.service(),
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),
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)
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self.assertIs(instance1.resource, RESOURCE1)
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self.assertIs(instance2.resource, RESOURCE1)
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self.assertIs(instance1.resource, instance2.resource)
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def test_provided_item(self):
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class TestClient:
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def __init__(self, resource):
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self.resource = resource
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def __getitem__(self, item):
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return getattr(self, item)
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class TestService:
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def __init__(self, resource):
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self.resource = resource
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class TestContainer(containers.DeclarativeContainer):
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resource = providers.Resource(init_resource, providers.Object(RESOURCE1))
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client = providers.Factory(TestClient, resource=resource)
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service = providers.Factory(TestService, resource=client.provided['resource'])
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container = TestContainer()
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instance1, instance2 = self._run(
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asyncio.gather(
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container.service(),
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container.service(),
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),
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)
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self.assertIs(instance1.resource, RESOURCE1)
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self.assertIs(instance2.resource, RESOURCE1)
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self.assertIs(instance1.resource, instance2.resource)
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def test_provided_method_call(self):
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class TestClient:
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def __init__(self, resource):
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self.resource = resource
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def get_resource(self):
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return self.resource
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class TestService:
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def __init__(self, resource):
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self.resource = resource
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class TestContainer(containers.DeclarativeContainer):
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resource = providers.Resource(init_resource, providers.Object(RESOURCE1))
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client = providers.Factory(TestClient, resource=resource)
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service = providers.Factory(TestService, resource=client.provided.get_resource.call())
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container = TestContainer()
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instance1, instance2 = self._run(
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asyncio.gather(
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container.service(),
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container.service(),
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),
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)
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self.assertIs(instance1.resource, RESOURCE1)
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self.assertIs(instance2.resource, RESOURCE1)
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self.assertIs(instance1.resource, instance2.resource)
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class DependencyTests(AsyncTestCase):
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def test_isinstance(self):
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dependency = 1.0
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async def get_async():
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return dependency
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provider = providers.Dependency(instance_of=float)
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provider.override(providers.Callable(get_async))
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dependency1 = self._run(provider())
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dependency2 = self._run(provider())
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self.assertEqual(dependency1, dependency)
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self.assertEqual(dependency2, dependency)
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def test_isinstance_invalid(self):
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async def get_async():
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return {}
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provider = providers.Dependency(instance_of=float)
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provider.override(providers.Callable(get_async))
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with self.assertRaises(errors.Error):
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self._run(provider())
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def test_async_mode(self):
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dependency = 123
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async def get_async():
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return dependency
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def get_sync():
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return dependency
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provider = providers.Dependency(instance_of=int)
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provider.override(providers.Factory(get_async))
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dependency1 = self._run(provider())
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dependency2 = self._run(provider())
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self.assertEqual(dependency1, dependency)
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self.assertEqual(dependency2, dependency)
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provider.override(providers.Factory(get_sync))
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dependency3 = self._run(provider())
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dependency4 = self._run(provider())
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self.assertEqual(dependency3, dependency)
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self.assertEqual(dependency4, dependency)
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class OverrideTests(AsyncTestCase):
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def test_provider(self):
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dependency = object()
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async def _get_dependency_async():
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return dependency
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def _get_dependency_sync():
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return dependency
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provider = providers.Provider()
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provider.override(providers.Callable(_get_dependency_async))
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dependency1 = self._run(provider())
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provider.override(providers.Callable(_get_dependency_sync))
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dependency2 = self._run(provider())
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self.assertIs(dependency1, dependency)
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self.assertIs(dependency2, dependency)
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def test_callable(self):
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dependency = object()
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async def _get_dependency_async():
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return dependency
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def _get_dependency_sync():
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return dependency
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provider = providers.Callable(_get_dependency_async)
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dependency1 = self._run(provider())
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provider.override(providers.Callable(_get_dependency_sync))
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dependency2 = self._run(provider())
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self.assertIs(dependency1, dependency)
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self.assertIs(dependency2, dependency)
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def test_factory(self):
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dependency = object()
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async def _get_dependency_async():
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return dependency
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def _get_dependency_sync():
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return dependency
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provider = providers.Factory(_get_dependency_async)
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dependency1 = self._run(provider())
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provider.override(providers.Callable(_get_dependency_sync))
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dependency2 = self._run(provider())
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self.assertIs(dependency1, dependency)
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self.assertIs(dependency2, dependency)
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