cleanup and doc

packages/service-library/src/servicelib/aiohttp/rest_middlewares.py

@@ -81,8 +81,10 @@ def _handle_http_successful(request: web.BaseRequest, err: web.HTTPSuccessful):
 
 def _handle_as_internal_server_error(request: web.BaseRequest, err: Exception):
     """
-    This error handler is the last resource to catch unhandled exceptions and
-    are converted into web.HTTPInternalServerError (i.e. 500)
+    This error handler is the last resource to catch unhandled exceptions. When
+    an exception reaches this point, it is converted into a web.HTTPInternalServerError
+    reponse (i.e. HTTP_500_INTERNAL_ERROR) for the client and the server logs
+    the error to be diagnosed
 
     Its purpose is:
         - respond the client with 500 and a reference OEC

packages/service-library/tests/aiohttp/test_rest_middlewares.py

@@ -140,9 +140,12 @@ async def raise_unexpected(cls, request: web.Request):
 
     @classmethod
     async def raise_exception(cls, request: web.Request):
-        for exc_cls in (NotImplementedError, asyncio.TimeoutError):
-            if exc_cls.__name__ == request.query["exc"]:
-                raise exc_cls
+        exc_name = request.query["exc"]
+        match exc_name:
+            case NotImplementedError.__name__:
+                raise NotImplementedError
+            case asyncio.TimeoutError.__name__:
+                raise asyncio.TimeoutError
 
 
 @pytest.fixture