diff --git a/test/test_mapper_manager.py b/test/test_mapper_manager.py
index 905ff3b..21598e6 100644
--- a/test/test_mapper_manager.py
+++ b/test/test_mapper_manager.py
@@ -74,4 +74,13 @@ def test_set():
     assert len(param_list) == 3
     assert param_list[0] == "banana"
     assert param_list[1] == 500
-    assert param_list[2] == "a"
\ No newline at end of file
+    assert param_list[2] == "a"
+
+def test_dollar():
+    mm = MapperManager()
+    mm.read_mapper_xml_file("mapper/test.xml")
+
+    sql, param_list = mm.select("testStringReplace", {'id': 1, 'date': "20241204"})
+    assert sql == "SELECT * from fruits_20241204 where id=?"
+    assert len(param_list) == 1
+    assert param_list[0] == 1
\ No newline at end of file