Improve FactoryAggregate typing stub

docs/main/changelog.rst

@@ -9,6 +9,7 @@ follows `Semantic versioning`_
 
 Development version
 -------------------
+- Improve ``FactoryAggregate`` typing stub.
 - Improve resource subclasses typing and make shutdown definition optional
   `PR #492 <https://github.com/ets-labs/python-dependency-injector/pull/492>`_.
   Thanks to `@EdwardBlair <https://github.com/EdwardBlair>`_  for suggesting the improvement.

src/dependency_injector/providers.pyi

@@ -282,19 +282,19 @@ class FactoryDelegate(Delegate):
     def __init__(self, factory: Factory): ...
 
 
-class FactoryAggregate(Provider):
-    def __init__(self, **factories: Factory): ...
-    def __getattr__(self, factory_name: str) -> Factory: ...
+class FactoryAggregate(Provider[T]):
+    def __init__(self, **factories: Factory[T]): ...
+    def __getattr__(self, factory_name: str) -> Factory[T]: ...
 
     @overload
-    def __call__(self, factory_name: str, *args: Injection, **kwargs: Injection) -> Any: ...
+    def __call__(self, factory_name: str, *args: Injection, **kwargs: Injection) -> T: ...
     @overload
-    def __call__(self, factory_name: str, *args: Injection, **kwargs: Injection) -> Awaitable[Any]: ...
-    def async_(self, factory_name: str, *args: Injection, **kwargs: Injection) -> Awaitable[Any]: ...
+    def __call__(self, factory_name: str, *args: Injection, **kwargs: Injection) -> Awaitable[T]: ...
+    def async_(self, factory_name: str, *args: Injection, **kwargs: Injection) -> Awaitable[T]: ...
 
     @property
-    def factories(self) -> _Dict[str, Factory]: ...
-    def set_factories(self, **factories: Factory) -> FactoryAggregate: ...
+    def factories(self) -> _Dict[str, Factory[T]]: ...
+    def set_factories(self, **factories: Factory[T]) -> FactoryAggregate[T]: ...
 
 
 class BaseSingleton(Provider[T]):

tests/typing/factory.py

@@ -55,13 +55,13 @@ animal7: Animal = provider7(1, 2, 3, b='1', c=2, e=0.0)
 provider8 = providers.FactoryDelegate(providers.Factory(object))
 
 # Test 9: to check FactoryAggregate provider
-provider9 = providers.FactoryAggregate(
-    a=providers.Factory(object),
-    b=providers.Factory(object),
+provider9: providers.FactoryAggregate[str] = providers.FactoryAggregate(
+    a=providers.Factory(str, "str1"),
+    b=providers.Factory(str, "str2"),
 )
-factory_a_9: providers.Factory = provider9.a
-factory_b_9: providers.Factory = provider9.b
-val9: Any = provider9('a')
+factory_a_9: providers.Factory[str] = provider9.a
+factory_b_9: providers.Factory[str] = provider9.b
+val9: str = provider9('a')
 
 # Test 10: to check the explicit typing
 factory10: providers.Provider[Animal] = providers.Factory(Cat)