Added blueprint order test and used deques to add blueprints

sanic/sanic.py

@@ -1,4 +1,5 @@
 from asyncio import get_event_loop
+from collections import deque
 from functools import partial
 from inspect import isawaitable
 from multiprocessing import Process, Event
@@ -21,8 +22,8 @@ class Sanic:
         self.router = router or Router()
         self.error_handler = error_handler or Handler(self)
         self.config = Config()
-        self.request_middleware = []
+        self.request_middleware = deque()
-        self.response_middleware = []
+        self.response_middleware = deque()
         self.blueprints = {}
         self._blueprint_order = []
         self.loop = None
@@ -74,7 +75,7 @@ class Sanic:
             if attach_to == 'request':
                 self.request_middleware.append(middleware)
             if attach_to == 'response':
-                self.response_middleware.insert(0, middleware)
+                self.response_middleware.appendleft(middleware)
             return middleware
 
         # Detect which way this was called, @middleware or @middleware('AT')

tests/test_middleware.py

@@ -86,3 +86,43 @@ def test_middleware_override_response():
 
     assert response.status == 200
     assert response.text == 'OK'
+
+
+
+def test_middleware_order():
+    app = Sanic('test_middleware_order')
+
+    order = []
+
+    @app.middleware('request')
+    async def request1(request):
+        order.append(1)
+
+    @app.middleware('request')
+    async def request2(request):
+        order.append(2)
+
+    @app.middleware('request')
+    async def request3(request):
+        order.append(3)
+
+    @app.middleware('response')
+    async def response1(request, response):
+        order.append(6)
+
+    @app.middleware('response')
+    async def response2(request, response):
+        order.append(5)
+
+    @app.middleware('response')
+    async def response3(request, response):
+        order.append(4)
+
+    @app.route('/')
+    async def handler(request):
+        return text('OK')
+
+    request, response = sanic_endpoint_test(app)
+
+    assert response.status == 200
+    assert order == [1,2,3,4,5,6]