mirror of
https://github.com/ets-labs/python-dependency-injector.git
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8dd8446d39
* Add container injections to wiring * Add example * Update docs * Update changelog * Improve typing
336 lines
11 KiB
Python
336 lines
11 KiB
Python
from decimal import Decimal
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import unittest
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from dependency_injector.wiring import wire, Provide, Closing
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# Runtime import to avoid syntax errors in samples on Python < 3.5
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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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_SAMPLES_DIR = os.path.abspath(
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os.path.sep.join((
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os.path.dirname(__file__),
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'../samples/',
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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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sys.path.append(_SAMPLES_DIR)
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from asyncutils import AsyncTestCase
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from wiringsamples import module, package
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from wiringsamples.service import Service
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from wiringsamples.container import Container, SubContainer
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class WiringTest(unittest.TestCase):
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container: Container
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def setUp(self) -> None:
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self.container = Container(config={'a': {'b': {'c': 10}}})
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self.container.wire(
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modules=[module],
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packages=[package],
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)
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self.addCleanup(self.container.unwire)
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def test_package_lookup(self):
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from wiringsamples.package import test_package_function
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service = test_package_function()
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self.assertIsInstance(service, Service)
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def test_package_subpackage_lookup(self):
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from wiringsamples.package.subpackage import test_package_function
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service = test_package_function()
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self.assertIsInstance(service, Service)
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def test_package_submodule_lookup(self):
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from wiringsamples.package.subpackage.submodule import test_function
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service = test_function()
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self.assertIsInstance(service, Service)
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def test_class_wiring(self):
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test_class_object = module.TestClass()
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self.assertIsInstance(test_class_object.service, Service)
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def test_class_wiring_context_arg(self):
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test_service = self.container.service()
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test_class_object = module.TestClass(service=test_service)
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self.assertIs(test_class_object.service, test_service)
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def test_class_method_wiring(self):
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test_class_object = module.TestClass()
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service = test_class_object.method()
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self.assertIsInstance(service, Service)
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def test_class_classmethod_wiring(self):
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service = module.TestClass.class_method()
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self.assertIsInstance(service, Service)
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def test_instance_classmethod_wiring(self):
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instance = module.TestClass()
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service = instance.class_method()
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self.assertIsInstance(service, Service)
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def test_class_staticmethod_wiring(self):
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service = module.TestClass.static_method()
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self.assertIsInstance(service, Service)
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def test_instance_staticmethod_wiring(self):
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instance = module.TestClass()
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service = instance.static_method()
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self.assertIsInstance(service, Service)
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def test_function_wiring(self):
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service = module.test_function()
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self.assertIsInstance(service, Service)
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def test_function_wiring_context_arg(self):
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test_service = self.container.service()
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service = module.test_function(service=test_service)
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self.assertIs(service, test_service)
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def test_function_wiring_provider(self):
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service = module.test_function_provider()
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self.assertIsInstance(service, Service)
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def test_function_wiring_provider_context_arg(self):
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test_service = self.container.service()
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service = module.test_function_provider(service_provider=lambda: test_service)
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self.assertIs(service, test_service)
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def test_configuration_option(self):
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int_value, str_value, decimal_value = module.test_config_value()
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self.assertEqual(int_value, 10)
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self.assertEqual(str_value, '10')
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self.assertEqual(decimal_value, Decimal(10))
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def test_provide_provider(self):
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service = module.test_provide_provider()
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self.assertIsInstance(service, Service)
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def test_provided_instance(self):
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class TestService:
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foo = {
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'bar': lambda: 10,
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}
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with self.container.service.override(TestService()):
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some_value = module.test_provided_instance()
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self.assertEqual(some_value, 10)
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def test_subcontainer(self):
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some_value = module.test_subcontainer_provider()
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self.assertEqual(some_value, 1)
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def test_config_invariant(self):
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config = {
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'option': {
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'a': 1,
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'b': 2,
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},
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'switch': 'a',
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}
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self.container.config.from_dict(config)
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with self.container.config.switch.override('a'):
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value_a = module.test_config_invariant()
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self.assertEqual(value_a, 1)
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with self.container.config.switch.override('b'):
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value_b = module.test_config_invariant()
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self.assertEqual(value_b, 2)
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def test_wire_with_class_error(self):
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with self.assertRaises(Exception):
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wire(
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container=Container,
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modules=[module],
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)
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def test_unwire_function(self):
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self.container.unwire()
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self.assertIsInstance(module.test_function(), Provide)
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def test_unwire_class(self):
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self.container.unwire()
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test_class_object = module.TestClass()
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self.assertIsInstance(test_class_object.service, Provide)
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def test_unwire_class_method(self):
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self.container.unwire()
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test_class_object = module.TestClass()
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self.assertIsInstance(test_class_object.method(), Provide)
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def test_unwire_package_function(self):
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self.container.unwire()
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from wiringsamples.package.subpackage.submodule import test_function
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self.assertIsInstance(test_function(), Provide)
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def test_unwire_package_function_by_reference(self):
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from wiringsamples.package.subpackage import submodule
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self.container.unwire()
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self.assertIsInstance(submodule.test_function(), Provide)
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def test_wire_multiple_containers(self):
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sub_container = SubContainer()
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sub_container.wire(
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modules=[module],
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packages=[package],
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)
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self.addCleanup(sub_container.unwire)
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service, some_value = module.test_provide_from_different_containers()
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self.assertIsInstance(service, Service)
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self.assertEqual(some_value, 1)
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def test_closing_resource(self):
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from wiringsamples import resourceclosing
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resourceclosing.Service.reset_counter()
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container = resourceclosing.Container()
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container.wire(modules=[resourceclosing])
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self.addCleanup(container.unwire)
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result_1 = resourceclosing.test_function()
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self.assertIsInstance(result_1, resourceclosing.Service)
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self.assertEqual(result_1.init_counter, 1)
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self.assertEqual(result_1.shutdown_counter, 1)
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result_2 = resourceclosing.test_function()
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self.assertIsInstance(result_2, resourceclosing.Service)
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self.assertEqual(result_2.init_counter, 2)
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self.assertEqual(result_2.shutdown_counter, 2)
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self.assertIsNot(result_1, result_2)
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def test_closing_resource_context(self):
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from wiringsamples import resourceclosing
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resourceclosing.Service.reset_counter()
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service = resourceclosing.Service()
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container = resourceclosing.Container()
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container.wire(modules=[resourceclosing])
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self.addCleanup(container.unwire)
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result_1 = resourceclosing.test_function(service=service)
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self.assertIs(result_1, service)
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self.assertEqual(result_1.init_counter, 0)
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self.assertEqual(result_1.shutdown_counter, 0)
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result_2 = resourceclosing.test_function(service=service)
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self.assertIs(result_2, service)
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self.assertEqual(result_2.init_counter, 0)
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self.assertEqual(result_2.shutdown_counter, 0)
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def test_class_decorator(self):
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service = module.test_class_decorator()
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self.assertIsInstance(service, Service)
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def test_container(self):
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service = module.test_container()
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self.assertIsInstance(service, Service)
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class WiringAndFastAPITest(unittest.TestCase):
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container: Container
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def test_bypass_marker_injection(self):
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container = Container()
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container.wire(modules=[module])
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self.addCleanup(container.unwire)
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service = module.test_function(service=Provide[Container.service])
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self.assertIsInstance(service, Service)
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def test_closing_resource_bypass_marker_injection(self):
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from wiringsamples import resourceclosing
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resourceclosing.Service.reset_counter()
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container = resourceclosing.Container()
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container.wire(modules=[resourceclosing])
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self.addCleanup(container.unwire)
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result_1 = resourceclosing.test_function(
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service=Closing[Provide[resourceclosing.Container.service]],
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)
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self.assertIsInstance(result_1, resourceclosing.Service)
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self.assertEqual(result_1.init_counter, 1)
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self.assertEqual(result_1.shutdown_counter, 1)
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result_2 = resourceclosing.test_function(
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service=Closing[Provide[resourceclosing.Container.service]],
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)
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self.assertIsInstance(result_2, resourceclosing.Service)
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self.assertEqual(result_2.init_counter, 2)
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self.assertEqual(result_2.shutdown_counter, 2)
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self.assertIsNot(result_1, result_2)
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class WiringAsyncInjectionsTest(AsyncTestCase):
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def test_async_injections(self):
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from wiringsamples import asyncinjections
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container = asyncinjections.Container()
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container.wire(modules=[asyncinjections])
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self.addCleanup(container.unwire)
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asyncinjections.resource1.reset_counters()
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asyncinjections.resource2.reset_counters()
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resource1, resource2 = self._run(asyncinjections.async_injection())
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self.assertIs(resource1, asyncinjections.resource1)
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self.assertEqual(asyncinjections.resource1.init_counter, 1)
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self.assertEqual(asyncinjections.resource1.shutdown_counter, 0)
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self.assertIs(resource2, asyncinjections.resource2)
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self.assertEqual(asyncinjections.resource2.init_counter, 1)
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self.assertEqual(asyncinjections.resource2.shutdown_counter, 0)
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def test_async_injections_with_closing(self):
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from wiringsamples import asyncinjections
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container = asyncinjections.Container()
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container.wire(modules=[asyncinjections])
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self.addCleanup(container.unwire)
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asyncinjections.resource1.reset_counters()
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asyncinjections.resource2.reset_counters()
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resource1, resource2 = self._run(asyncinjections.async_injection_with_closing())
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self.assertIs(resource1, asyncinjections.resource1)
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self.assertEqual(asyncinjections.resource1.init_counter, 1)
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self.assertEqual(asyncinjections.resource1.shutdown_counter, 1)
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self.assertIs(resource2, asyncinjections.resource2)
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self.assertEqual(asyncinjections.resource2.init_counter, 1)
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self.assertEqual(asyncinjections.resource2.shutdown_counter, 1)
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resource1, resource2 = self._run(asyncinjections.async_injection_with_closing())
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self.assertIs(resource1, asyncinjections.resource1)
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self.assertEqual(asyncinjections.resource1.init_counter, 2)
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self.assertEqual(asyncinjections.resource1.shutdown_counter, 2)
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self.assertIs(resource2, asyncinjections.resource2)
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self.assertEqual(asyncinjections.resource2.init_counter, 2)
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self.assertEqual(asyncinjections.resource2.shutdown_counter, 2)
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