python-dependency-injector/tests/unit/wiring/test_wiring_py36.py
2021-09-30 20:09:42 -04:00

507 lines
17 KiB
Python

import contextlib
from decimal import Decimal
import importlib
import unittest
from dependency_injector.wiring import (
wire,
Provide,
Provider,
Closing,
register_loader_containers,
unregister_loader_containers,
)
from dependency_injector import errors
# Runtime import to avoid syntax errors in samples on Python < 3.5
import os
_TOP_DIR = os.path.abspath(
os.path.sep.join((
os.path.dirname(__file__),
"../",
)),
)
_SAMPLES_DIR = os.path.abspath(
os.path.sep.join((
os.path.dirname(__file__),
"../samples/",
)),
)
import sys
sys.path.append(_TOP_DIR)
sys.path.append(_SAMPLES_DIR)
from asyncutils import AsyncTestCase
from wiringsamples import module, package
from wiringsamples.service import Service
from wiringsamples.container import Container, SubContainer
from wiringsamples.wire_relative_string_names import wire_with_relative_string_names
class WiringTest(unittest.TestCase):
container: Container
def setUp(self) -> None:
self.container = Container(config={"a": {"b": {"c": 10}}})
self.container.wire(
modules=[module],
packages=[package],
)
self.addCleanup(self.container.unwire)
def test_package_lookup(self):
from wiringsamples.package import test_package_function
service = test_package_function()
self.assertIsInstance(service, Service)
def test_package_subpackage_lookup(self):
from wiringsamples.package.subpackage import test_package_function
service = test_package_function()
self.assertIsInstance(service, Service)
def test_package_submodule_lookup(self):
from wiringsamples.package.subpackage.submodule import test_function
service = test_function()
self.assertIsInstance(service, Service)
def test_module_attributes_wiring(self):
self.assertIsInstance(module.service, Service)
self.assertIsInstance(module.service_provider(), Service)
self.assertIsInstance(module.undefined, Provide)
def test_module_attribute_wiring_with_invalid_marker(self):
from wiringsamples import module_invalid_attr_injection
with self.assertRaises(Exception) as context:
self.container.wire(modules=[module_invalid_attr_injection])
self.assertEqual(
str(context.exception),
"Unknown type of marker {0}".format(module_invalid_attr_injection.service),
)
def test_class_wiring(self):
test_class_object = module.TestClass()
self.assertIsInstance(test_class_object.service, Service)
def test_class_wiring_context_arg(self):
test_service = self.container.service()
test_class_object = module.TestClass(service=test_service)
self.assertIs(test_class_object.service, test_service)
def test_class_method_wiring(self):
test_class_object = module.TestClass()
service = test_class_object.method()
self.assertIsInstance(service, Service)
def test_class_classmethod_wiring(self):
service = module.TestClass.class_method()
self.assertIsInstance(service, Service)
def test_instance_classmethod_wiring(self):
instance = module.TestClass()
service = instance.class_method()
self.assertIsInstance(service, Service)
def test_class_staticmethod_wiring(self):
service = module.TestClass.static_method()
self.assertIsInstance(service, Service)
def test_instance_staticmethod_wiring(self):
instance = module.TestClass()
service = instance.static_method()
self.assertIsInstance(service, Service)
def test_class_attribute_wiring(self):
self.assertIsInstance(module.TestClass.service, Service)
self.assertIsInstance(module.TestClass.service_provider(), Service)
self.assertIsInstance(module.TestClass.undefined, Provide)
def test_function_wiring(self):
service = module.test_function()
self.assertIsInstance(service, Service)
def test_function_wiring_context_arg(self):
test_service = self.container.service()
service = module.test_function(service=test_service)
self.assertIs(service, test_service)
def test_function_wiring_provider(self):
service = module.test_function_provider()
self.assertIsInstance(service, Service)
def test_function_wiring_provider_context_arg(self):
test_service = self.container.service()
service = module.test_function_provider(service_provider=lambda: test_service)
self.assertIs(service, test_service)
def test_configuration_option(self):
(
value_int,
value_float,
value_str,
value_decimal,
value_required,
value_required_int,
value_required_float,
value_required_str,
value_required_decimal,
) = module.test_config_value()
self.assertEqual(value_int, 10)
self.assertEqual(value_float, 10.0)
self.assertEqual(value_str, "10")
self.assertEqual(value_decimal, Decimal(10))
self.assertEqual(value_required, 10)
self.assertEqual(value_required_int, 10)
self.assertEqual(value_required_float, 10.0)
self.assertEqual(value_required_str, "10")
self.assertEqual(value_required_decimal, Decimal(10))
def test_configuration_option_required_undefined(self):
self.container.config.reset_override()
with self.assertRaisesRegex(errors.Error, "Undefined configuration option \"config.a.b.c\""):
module.test_config_value_required_undefined()
def test_provide_provider(self):
service = module.test_provide_provider()
self.assertIsInstance(service, Service)
def test_provider_provider(self):
service = module.test_provider_provider()
self.assertIsInstance(service, Service)
def test_provided_instance(self):
class TestService:
foo = {
"bar": lambda: 10,
}
with self.container.service.override(TestService()):
some_value = module.test_provided_instance()
self.assertEqual(some_value, 10)
def test_subcontainer(self):
some_value = module.test_subcontainer_provider()
self.assertEqual(some_value, 1)
def test_config_invariant(self):
config = {
"option": {
"a": 1,
"b": 2,
},
"switch": "a",
}
self.container.config.from_dict(config)
value_default = module.test_config_invariant()
self.assertEqual(value_default, 1)
with self.container.config.switch.override("a"):
value_a = module.test_config_invariant()
self.assertEqual(value_a, 1)
with self.container.config.switch.override("b"):
value_b = module.test_config_invariant()
self.assertEqual(value_b, 2)
def test_wire_with_class_error(self):
with self.assertRaises(Exception):
wire(
container=Container,
modules=[module],
)
def test_unwire_function(self):
self.container.unwire()
self.assertIsInstance(module.test_function(), Provide)
def test_unwire_class(self):
self.container.unwire()
test_class_object = module.TestClass()
self.assertIsInstance(test_class_object.service, Provide)
def test_unwire_class_method(self):
self.container.unwire()
test_class_object = module.TestClass()
self.assertIsInstance(test_class_object.method(), Provide)
def test_unwire_package_function(self):
self.container.unwire()
from wiringsamples.package.subpackage.submodule import test_function
self.assertIsInstance(test_function(), Provide)
def test_unwire_package_function_by_reference(self):
from wiringsamples.package.subpackage import submodule
self.container.unwire()
self.assertIsInstance(submodule.test_function(), Provide)
def test_unwire_module_attributes(self):
self.container.unwire()
self.assertIsInstance(module.service, Provide)
self.assertIsInstance(module.service_provider, Provider)
self.assertIsInstance(module.undefined, Provide)
def test_unwire_class_attributes(self):
self.container.unwire()
self.assertIsInstance(module.TestClass.service, Provide)
self.assertIsInstance(module.TestClass.service_provider, Provider)
self.assertIsInstance(module.TestClass.undefined, Provide)
def test_wire_multiple_containers(self):
sub_container = SubContainer()
sub_container.wire(
modules=[module],
packages=[package],
)
self.addCleanup(sub_container.unwire)
service, some_value = module.test_provide_from_different_containers()
self.assertIsInstance(service, Service)
self.assertEqual(some_value, 1)
def test_closing_resource(self):
from wiringsamples import resourceclosing
resourceclosing.Service.reset_counter()
container = resourceclosing.Container()
container.wire(modules=[resourceclosing])
self.addCleanup(container.unwire)
result_1 = resourceclosing.test_function()
self.assertIsInstance(result_1, resourceclosing.Service)
self.assertEqual(result_1.init_counter, 1)
self.assertEqual(result_1.shutdown_counter, 1)
result_2 = resourceclosing.test_function()
self.assertIsInstance(result_2, resourceclosing.Service)
self.assertEqual(result_2.init_counter, 2)
self.assertEqual(result_2.shutdown_counter, 2)
self.assertIsNot(result_1, result_2)
def test_closing_resource_context(self):
from wiringsamples import resourceclosing
resourceclosing.Service.reset_counter()
service = resourceclosing.Service()
container = resourceclosing.Container()
container.wire(modules=[resourceclosing])
self.addCleanup(container.unwire)
result_1 = resourceclosing.test_function(service=service)
self.assertIs(result_1, service)
self.assertEqual(result_1.init_counter, 0)
self.assertEqual(result_1.shutdown_counter, 0)
result_2 = resourceclosing.test_function(service=service)
self.assertIs(result_2, service)
self.assertEqual(result_2.init_counter, 0)
self.assertEqual(result_2.shutdown_counter, 0)
def test_class_decorator(self):
service = module.test_class_decorator()
self.assertIsInstance(service, Service)
def test_container(self):
service = module.test_container()
self.assertIsInstance(service, Service)
class WiringWithStringModuleAndPackageNamesTest(unittest.TestCase):
container: Container
def setUp(self) -> None:
self.container = Container()
self.addCleanup(self.container.unwire)
def test_absolute_names(self):
self.container.wire(
modules=["wiringsamples.module"],
packages=["wiringsamples.package"],
)
service = module.test_function()
self.assertIsInstance(service, Service)
from wiringsamples.package.subpackage.submodule import test_function
service = test_function()
self.assertIsInstance(service, Service)
def test_relative_names_with_explicit_package(self):
self.container.wire(
modules=[".module"],
packages=[".package"],
from_package="wiringsamples",
)
service = module.test_function()
self.assertIsInstance(service, Service)
from wiringsamples.package.subpackage.submodule import test_function
service = test_function()
self.assertIsInstance(service, Service)
def test_relative_names_with_auto_package(self):
wire_with_relative_string_names(self.container)
service = module.test_function()
self.assertIsInstance(service, Service)
from wiringsamples.package.subpackage.submodule import test_function
service = test_function()
self.assertIsInstance(service, Service)
class ModuleAsPackageTest(unittest.TestCase):
def setUp(self):
self.container = Container(config={"a": {"b": {"c": 10}}})
self.addCleanup(self.container.unwire)
def test_module_as_package_wiring(self):
# See: https://github.com/ets-labs/python-dependency-injector/issues/481
self.container.wire(packages=[module])
self.assertIsInstance(module.service, Service)
class WiringAndQueue(unittest.TestCase):
def test_wire_queue(self) -> None:
from wiringsamples import queuemodule
container = Container()
self.addCleanup(container.unwire)
# Should not raise exception
# See: https://github.com/ets-labs/python-dependency-injector/issues/362
try:
container.wire(modules=[queuemodule])
except:
raise
class WiringAndFastAPITest(unittest.TestCase):
container: Container
def test_bypass_marker_injection(self):
container = Container()
container.wire(modules=[module])
self.addCleanup(container.unwire)
service = module.test_function(service=Provide[Container.service])
self.assertIsInstance(service, Service)
def test_closing_resource_bypass_marker_injection(self):
from wiringsamples import resourceclosing
resourceclosing.Service.reset_counter()
container = resourceclosing.Container()
container.wire(modules=[resourceclosing])
self.addCleanup(container.unwire)
result_1 = resourceclosing.test_function(
service=Closing[Provide[resourceclosing.Container.service]],
)
self.assertIsInstance(result_1, resourceclosing.Service)
self.assertEqual(result_1.init_counter, 1)
self.assertEqual(result_1.shutdown_counter, 1)
result_2 = resourceclosing.test_function(
service=Closing[Provide[resourceclosing.Container.service]],
)
self.assertIsInstance(result_2, resourceclosing.Service)
self.assertEqual(result_2.init_counter, 2)
self.assertEqual(result_2.shutdown_counter, 2)
self.assertIsNot(result_1, result_2)
class WiringAsyncInjectionsTest(AsyncTestCase):
def test_async_injections(self):
from wiringsamples import asyncinjections
container = asyncinjections.Container()
container.wire(modules=[asyncinjections])
self.addCleanup(container.unwire)
asyncinjections.resource1.reset_counters()
asyncinjections.resource2.reset_counters()
resource1, resource2 = self._run(asyncinjections.async_injection())
self.assertIs(resource1, asyncinjections.resource1)
self.assertEqual(asyncinjections.resource1.init_counter, 1)
self.assertEqual(asyncinjections.resource1.shutdown_counter, 0)
self.assertIs(resource2, asyncinjections.resource2)
self.assertEqual(asyncinjections.resource2.init_counter, 1)
self.assertEqual(asyncinjections.resource2.shutdown_counter, 0)
def test_async_injections_with_closing(self):
from wiringsamples import asyncinjections
container = asyncinjections.Container()
container.wire(modules=[asyncinjections])
self.addCleanup(container.unwire)
asyncinjections.resource1.reset_counters()
asyncinjections.resource2.reset_counters()
resource1, resource2 = self._run(asyncinjections.async_injection_with_closing())
self.assertIs(resource1, asyncinjections.resource1)
self.assertEqual(asyncinjections.resource1.init_counter, 1)
self.assertEqual(asyncinjections.resource1.shutdown_counter, 1)
self.assertIs(resource2, asyncinjections.resource2)
self.assertEqual(asyncinjections.resource2.init_counter, 1)
self.assertEqual(asyncinjections.resource2.shutdown_counter, 1)
resource1, resource2 = self._run(asyncinjections.async_injection_with_closing())
self.assertIs(resource1, asyncinjections.resource1)
self.assertEqual(asyncinjections.resource1.init_counter, 2)
self.assertEqual(asyncinjections.resource1.shutdown_counter, 2)
self.assertIs(resource2, asyncinjections.resource2)
self.assertEqual(asyncinjections.resource2.init_counter, 2)
self.assertEqual(asyncinjections.resource2.shutdown_counter, 2)
class AutoLoaderTest(unittest.TestCase):
container: Container
def setUp(self) -> None:
self.container = Container(config={"a": {"b": {"c": 10}}})
importlib.reload(module)
def tearDown(self) -> None:
with contextlib.suppress(ValueError):
unregister_loader_containers(self.container)
self.container.unwire()
@classmethod
def tearDownClass(cls) -> None:
importlib.reload(module)
def test_register_container(self):
register_loader_containers(self.container)
importlib.reload(module)
importlib.import_module("wiringsamples.imports")
service = module.test_function()
self.assertIsInstance(service, Service)