webhooks: Add test event handler to Dropbox Sign.

zerver/webhooks/dropboxsign/fixtures/callback_test.json

@@ -0,0 +1,10 @@
+{
+    "event": {
+        "event_time": "1729521679",
+        "event_type": "callback_test",
+        "event_hash": "1abb1c65915585ab5afgec6f62c479b2917a889605f7ee867f64cbb313666f8f",
+        "event_metadata": {
+            "reported_for_account_id": "7ca5011f9071abc48c498f10a5692ea36f9534e3"
+        }
+    }
+}

zerver/webhooks/dropboxsign/tests.py

@@ -55,6 +55,13 @@ class DropboxSignHookTests(WebhookTestCase):
             topic=expected_topic_name,
         )
 
+    def test_callback_test(self) -> None:
+        expected_topic_name = "Dropbox Sign"
+        expected_message = "Dropbox Sign webhook has been successfully configured."
+        self.check_webhook(
+            "callback_test", expected_topic_name, expected_message, content_type=None
+        )
+
     @override
     def get_payload(self, fixture_name: str) -> dict[str, str]:
         return {"json": self.webhook_fixture_data("dropboxsign", fixture_name, file_type="json")}

zerver/webhooks/dropboxsign/view.py

@@ -7,7 +7,7 @@ from zerver.decorator import webhook_view
 from zerver.lib.response import json_success
 from zerver.lib.typed_endpoint import ApiParamConfig, typed_endpoint
 from zerver.lib.validator import WildValue, check_string
-from zerver.lib.webhooks.common import check_send_webhook_message
+from zerver.lib.webhooks.common import check_send_webhook_message, get_setup_webhook_message
 from zerver.models import UserProfile
 
 IS_AWAITING_SIGNATURE = "is awaiting the signature of {awaiting_recipients}"
@@ -68,5 +68,9 @@ def api_dropboxsign_webhook(
         body = get_message_body(payload)
         topic_name = payload["signature_request"]["title"].tame(check_string)
         check_send_webhook_message(request, user_profile, topic_name, body)
+    elif payload["event"]["event_type"] == "callback_test":
+        body = get_setup_webhook_message("Dropbox Sign")
+        topic_name = "Dropbox Sign"
+        check_send_webhook_message(request, user_profile, topic_name, body)
 
     return json_success(request, data={"msg": "Hello API Event Received"})