trello tests: Test that we ignore "pos" data.

We will extend this test soon, once we begin
ignoring other fields.

zerver/webhooks/trello/tests.py

@@ -1,3 +1,4 @@
+from typing import Dict
 from unittest.mock import patch
 
 import orjson
@@ -133,6 +134,27 @@ class TrelloHookTests(WebhookTestCase):
             payload = orjson.dumps(data).decode()
             self.verify_post_is_ignored(payload)
 
+    def test_ignoring_card_updates(self) -> None:
+        fields = [
+            "pos",
+        ]
+        for field in fields:
+            card: Dict[str, object] = {}
+            old = {}
+            old[field] = "should-be-ignored"
+            data = dict(
+                model="whatever",
+                action=dict(
+                    type="updateCard",
+                    data=dict(
+                        card=card,
+                        old=old
+                    ),
+                ),
+            )
+            payload = orjson.dumps(data).decode()
+            self.verify_post_is_ignored(payload)
+
     def test_trello_webhook_when_description_was_added_to_card(self) -> None:
         expected_message = "Marco Matarazzo set description for [New Card](https://trello.com/c/P2r0z66z) to:\n~~~ quote\nNew Description\n~~~"
         self.check_webhook("adding_description_to_card", "Welcome Board", expected_message)