S3: add EventBridge notification for delete object tagging

moto/s3/models.py

@@ -2687,8 +2687,17 @@ def delete_object_tagging(
         self, bucket_name: str, key_name: str, version_id: Optional[str] = None
     ) -> None:
         key = self.get_object(bucket_name, key_name, version_id=version_id)
+        bucket = self.get_bucket(bucket_name)
+
         self.tagger.delete_all_tags_for_resource(key.arn)  # type: ignore
 
+        notifications.send_event(
+            self.account_id,
+            notifications.S3NotificationEvent.OBJECT_TAGGING_DELETE_EVENT,
+            bucket,
+            key,
+        )
+
     def delete_object(
         self,
         bucket_name: str,

tests/test_s3/test_s3_eventbridge_integration.py

@@ -305,3 +305,38 @@ def test_put_object_tagging_notification():
     assert event_message["region"] == REGION_NAME
     assert event_message["detail"]["bucket"]["name"] == bucket_name
     assert event_message["detail"]["reason"] == "ObjectTagging"
+
+
+@mock_aws
+def test_delete_object_tagging_notification():
+    resource_names = _seteup_bucket_notification_eventbridge()
+    bucket_name = resource_names["bucket_name"]
+    s3_client = boto3.client("s3", region_name=REGION_NAME)
+
+    # Put Object
+    s3_client.put_object(Bucket=bucket_name, Key="keyname", Body="bodyofnewobject")
+
+    # Put Object Tagging
+    s3_client.put_object_tagging(
+        Bucket=bucket_name,
+        Key="keyname",
+        Tagging={
+            "TagSet": [
+                {"Key": "item1", "Value": "foo"},
+                {"Key": "item2", "Value": "bar"},
+            ]
+        },
+    )
+
+    # Delete Object Tagging
+    s3_client.delete_object_tagging(Bucket=bucket_name, Key="keyname")
+
+    events = _get_send_events()
+    assert len(events) == 4
+    event_message = json.loads(events[3]["message"])
+    assert event_message["detail-type"] == "Object Tags Deleted"
+    assert event_message["source"] == "aws.s3"
+    assert event_message["account"] == ACCOUNT_ID
+    assert event_message["region"] == REGION_NAME
+    assert event_message["detail"]["bucket"]["name"] == bucket_name
+    assert event_message["detail"]["reason"] == "ObjectTagging"