🐛 Allow async class methods as dependencies not decorated

fastapi/routing.py

@@ -238,6 +238,9 @@ async def app(request: Request) -> Response:
                 dependant=dependant, values=values, is_coroutine=is_coroutine
             )
 
+            if asyncio.iscoroutine(raw_response):
+                raw_response = await raw_response
+
             if isinstance(raw_response, Response):
                 if raw_response.background is None:
                     raw_response.background = background_tasks

tests/test_dependency_class.py

@@ -53,6 +53,9 @@ async def get_callable_dependency(value: str = Depends(callable_dependency)):
     return value
 
 
+app.add_api_route("/callable-dependency-not-decorated", callable_dependency, methods=["GET"])
+
+
 @app.get("/callable-gen-dependency")
 async def get_callable_gen_dependency(value: str = Depends(callable_gen_dependency)):
     return value
@@ -65,6 +68,9 @@ async def get_async_callable_dependency(
     return value
 
 
+app.add_api_route("/async-callable-dependency-not-decorated", async_callable_dependency, methods=["GET"])
+
+
 @app.get("/async-callable-gen-dependency")
 async def get_async_callable_gen_dependency(
     value: str = Depends(async_callable_gen_dependency),
@@ -79,6 +85,9 @@ async def get_synchronous_method_dependency(
     return value
 
 
+app.add_api_route("/synchronous-method-dependency-not-decorated", methods_dependency.synchronous, methods=["GET"])
+
+
 @app.get("/synchronous-method-gen-dependency")
 async def get_synchronous_method_gen_dependency(
     value: str = Depends(methods_dependency.synchronous_gen),
@@ -93,6 +102,9 @@ async def get_asynchronous_method_dependency(
     return value
 
 
+app.add_api_route("/asynchronous-method-dependency-not-decorated", methods_dependency.asynchronous, methods=["GET"])
+
+
 @app.get("/asynchronous-method-gen-dependency")
 async def get_asynchronous_method_gen_dependency(
     value: str = Depends(methods_dependency.asynchronous_gen),
@@ -107,12 +119,16 @@ async def get_asynchronous_method_gen_dependency(
     "route,value",
     [
         ("/callable-dependency", "callable-dependency"),
+        ("/callable-dependency-not-decorated", "callable-dependency-not-decorated"),
         ("/callable-gen-dependency", "callable-gen-dependency"),
         ("/async-callable-dependency", "async-callable-dependency"),
+        ("/async-callable-dependency-not-decorated", "async-callable-dependency-not-decorated"),
         ("/async-callable-gen-dependency", "async-callable-gen-dependency"),
         ("/synchronous-method-dependency", "synchronous-method-dependency"),
+        ("/synchronous-method-dependency-not-decorated", "synchronous-method-dependency-not-decorated"),
         ("/synchronous-method-gen-dependency", "synchronous-method-gen-dependency"),
         ("/asynchronous-method-dependency", "asynchronous-method-dependency"),
+        ("/asynchronous-method-dependency-not-decorated", "asynchronous-method-dependency-not-decorated"),
         ("/asynchronous-method-gen-dependency", "asynchronous-method-gen-dependency"),
     ],
 )