Conditionally inject CLI arguments into factory (#2402)

tests/fake/factory.py

@@ -1,6 +0,0 @@
-from sanic import Sanic
-
-
-def run():
-    app = Sanic("FactoryTest")
-    return app

tests/fake/server.py

@@ -34,3 +34,12 @@ async def shutdown(app: Sanic, _):
 
 def create_app():
     return app
+
+
+def create_app_with_args(args):
+    try:
+        print(f"foo={args.foo}")
+    except AttributeError:
+        print(f"module={args.module}")
+
+    return app