diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 17ef5b3..ea15a42 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -57,9 +57,9 @@ jobs:
         pip install -e .'[test]'
     - name: Run tests with ${{ matrix.python-version }}
       env:
-        APP_ID: 8FfQwpvihLHK4htqmtEvkNrv
-        APP_KEY: eE9tNOcCiWoMHM1phxY41rAz
-        MASTER_KEY: 75zAjEJSj7lifKQqKSTryae9
+        APP_ID: YJRGphy60b8JCBib0vtDDtak-MdYXbMMI
+        APP_KEY: ${{ secrets.APP_KEY }}
+        MASTER_KEY: ${{ secrets.MASTER_KEY }}
         USE_REGION: US
       run:
         nosetests -v
diff --git a/README.md b/README.md
index 136d6cb..3e5cd1e 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,22 @@ Configure the following environment variables:
 - `MASTER_KEY`
 - `USE_REGION`
 
+Make sure the following options are configured on the LeanCloud console:
+
+- Data Storage > Settings > Include ACL with objects being queried: **checked**
+- Push Notification > Push notification settings > Prevent clients from sending push notifications: **unchecked**
+- Settings > Security > Service switches > Push notifications: **enabled**
+- Settings > Security > Service switches > SMS: **disabled**
+
+And there is a cloud function naming `add` which returns `3` for `add(a=1, b=2)` deployed on the LeanEngine production environment of the application.
+For example:
+
+```js
+AV.Cloud.define('add', async function (request) {
+    return request.params["a"] + request.params["b"]
+})
+```
+
 Install dependencies:
 
 ```sh
diff --git a/leancloud/utils.py b/leancloud/utils.py
index f7d8ca0..14afb6a 100644
--- a/leancloud/utils.py
+++ b/leancloud/utils.py
@@ -140,6 +140,7 @@ def decode(key, value):
         if meta_data:
             f._metadata = meta_data
         f._url = value["url"]
+        f._successful_url = value["url"]
         f.id = value["objectId"]
         return f
 
diff --git a/tests/test_file.py b/tests/test_file.py
index 34b2b5c..76a6cbf 100644
--- a/tests/test_file.py
+++ b/tests/test_file.py
@@ -123,6 +123,9 @@ def test_save_with_specified_key():  # type: () -> None
     path = urlparse(f.url).path
     if path.startswith("/avos-cloud-"):  # old school aws s3 file url
         assert path.split("/")[2] == user_specified_key
+    elif f.url.startswith("https://lc-gluttony"):  # new aws s3 gluttony bucket
+        gluttony_path = "/" + os.environ["APP_ID"][0:12] + "/" + user_specified_key
+        assert path == gluttony_path
     else:
         assert path == "/" + user_specified_key
 
diff --git a/tests/test_query.py b/tests/test_query.py
index 42e0d62..092d65f 100644
--- a/tests/test_query.py
+++ b/tests/test_query.py
@@ -17,6 +17,7 @@
 from leancloud import Query
 from leancloud import Object
 from leancloud import GeoPoint
+from leancloud.file_ import File
 
 __author__ = "asaka <lan@leancloud.rocks>"
 
@@ -68,6 +69,9 @@ def setup_func():
                 game_score.set("playerName", "张三")
                 game_score.set("location", GeoPoint(latitude=i, longitude=-i))
                 game_score.set("random", random.randrange(100))
+                f = File("Blah.txt", open("tests/sample_text.txt", "rb"))
+                f.save()
+                game_score.set("attachment", f)
                 game_score.save()
 
     return setup_func
@@ -468,6 +472,12 @@ def test_include():  # type: () -> None
     result = Query(GameScore).include(["score"]).find()
     assert len(result) == 10
 
+@with_setup(make_setup_func())
+def test_attachment():  # type: () -> None
+    result = Query(GameScore).first()
+    print(result.dump())
+    attachment = result.get('attachment')
+    assert attachment.url
 
 @with_setup(make_setup_func())
 def test_select():  # type: () -> None