Update unit test

Author: ykitamura-mdsol

tests/middlewares/wsgi_test.py

@@ -99,6 +99,7 @@ def test_401_response_when_not_authenticated(self):
         response = self.client.get("/")
 
         self.assertEqual(response.status_code, 401)
+        self.assertEqual(response.headers["Content-Length"], "151")
         self.assertEqual(response.json, {
             "errors": {
                 "mauth": [(