Test if correct statuses are returned if we allow acces index or not

Related: aio-libs#921

aiohttp/web_urldispatcher.py

@@ -497,17 +497,16 @@ def handle(self, request):
         # on opening a dir, load it's contents if allowed
         if filepath.is_dir():
             if self._show_index:
-                return Response(text=self._dir_index_html(filepath))
+                ret = Response(text=self._dir_index_html(filepath))
             else:
                 raise HTTPForbidden()
-
-        # on opening a file, load it's contents if they exist
-        if filepath.is_file():
+        elif filepath.is_file():
             ret = yield from self._file_sender.send(request, filepath)
-            return ret
         else:
             raise HTTPNotFound
 
+        return ret
+
     def _dir_index_html(self, filepath):
         "returns directory's index as html"
         assert filepath.is_dir()

tests/test_web_urldispatcher.py

@@ -29,12 +29,15 @@ def teardown():
     return tmp_dir
 
 
+@pytest.mark.parametrize("show_index,status", [(False, 403), (True, 200)])
 @pytest.mark.run_loop
-def test_access_root_of_static_handler(tmp_dir_path, create_app_and_client):
+def test_access_root_of_static_handler(tmp_dir_path, create_app_and_client,
+                                       show_index, status):
     """
     Tests the operation of static file server.
     Try to access the root of static file server, and make
-    sure that a `HTTP 403 - Forbidden` is returned.
+    sure that correct HTTP statuses are returned depending if we directory
+    index should be shown or not.
     """
     # Put a file inside tmp_dir_path:
     my_file_path = os.path.join(tmp_dir_path, 'my_file')
@@ -44,12 +47,12 @@ def test_access_root_of_static_handler(tmp_dir_path, create_app_and_client):
     app, client = yield from create_app_and_client()
 
     # Register global static route:
-    app.router.add_static('/', tmp_dir_path)
+    app.router.add_static('/', tmp_dir_path, show_index=show_index)
 
     # Request the root of the static directory.
     # Expect an 403 error page.
     r = yield from client.get('/')
-    assert r.status == 403
+    assert r.status == status
     # data = (yield from r.read())
     yield from r.release()