add test for merge

reflex/experimental/vars/object.py

@@ -3,9 +3,10 @@
 from __future__ import annotations
 
 import dataclasses
-from functools import cached_property
 import sys
+from functools import cached_property
 from typing import Any, Dict, Type, Union
+
 from reflex.experimental.vars.base import ImmutableVar, LiteralVar
 from reflex.experimental.vars.sequence import ArrayVar
 from reflex.vars import ImmutableVarData, Var, VarData
@@ -302,7 +303,8 @@ def __init__(
         """Initialize the object merge operation.
 
         Args:
-            _var_value: The value of the operation.
+            left: The left object to merge.
+            right: The right object to merge.
             _var_data: Additional hooks and imports associated with the operation.
         """
         super(ObjectMergeOperation, self).__init__(

tests/test_var.py

@@ -1034,6 +1034,10 @@ def test_object_operations():
     )
     assert str(object_var.a) == '({ ["a"] : 1, ["b"] : 2, ["c"] : 3 })["a"]'
     assert str(object_var["a"]) == '({ ["a"] : 1, ["b"] : 2, ["c"] : 3 })["a"]'
+    assert (
+        str(object_var.merge(LiteralObjectVar({"c": 4, "d": 5})))
+        == 'Object.assign(({ ["a"] : 1, ["b"] : 2, ["c"] : 3 }), ({ ["c"] : 4, ["d"] : 5 }))'
+    )
 
 
 def test_retrival():