diff --git a/shared-lib/lib-ot/tests/main.rs b/shared-lib/lib-ot/tests/main.rs
index bfaf470dfa..becc91a31f 100644
--- a/shared-lib/lib-ot/tests/main.rs
+++ b/shared-lib/lib-ot/tests/main.rs
@@ -1,4 +1,4 @@
-use lib_ot::core::{DocumentTree, NodeData, TransactionBuilder};
+use lib_ot::core::{DocumentTree, NodeData, Position, TransactionBuilder};
 use std::collections::HashMap;
 
 #[test]
@@ -36,7 +36,7 @@ fn test_documents() {
 }
 
 #[test]
-fn test_transform_paths() {
+fn test_inserts_nodes() {
     let mut document = DocumentTree::new();
     let transaction = {
         let mut tb = TransactionBuilder::new(&document);
@@ -54,3 +54,30 @@ fn test_transform_paths() {
     };
     document.apply(transaction);
 }
+
+#[test]
+fn test_update_nodes() {
+    let mut document = DocumentTree::new();
+    let transaction = {
+        let mut tb = TransactionBuilder::new(&document);
+        tb.insert_nodes(&vec![0].into(), &vec![NodeData::new("text")]);
+        tb.insert_nodes(&vec![1].into(), &vec![NodeData::new("text")]);
+        tb.insert_nodes(&vec![2].into(), &vec![NodeData::new("text")]);
+        tb.finalize()
+    };
+    document.apply(transaction);
+
+    let transaction = {
+        let mut tb = TransactionBuilder::new(&document);
+        tb.update_attributes(&vec![1].into(), HashMap::from([
+            ("bolded".into(), Some("true".into())),
+        ]));
+        tb.finalize()
+    };
+    document.apply(transaction);
+
+    let node = document.node_at_path(&Position(vec![1])).unwrap();
+    let node_data = document.arena.get(node).unwrap().get();
+    let is_bold = node_data.attributes.borrow().0.get("bolded").unwrap().clone();
+    assert_eq!(is_bold.unwrap(), "true");
+}