diff --git a/tests/integration/test_fablib.py b/tests/integration/test_fablib.py
index 59c5a31a..a9e00879 100644
--- a/tests/integration/test_fablib.py
+++ b/tests/integration/test_fablib.py
@@ -44,6 +44,13 @@ def test_fablib_list_sites_with_fields(self):
         fablib = FablibManager()
         fablib.list_sites(fields=["Name", "ConnectX-5 Available", "NVMe Total"])
 
+    def test_fablib_list_sites_with_filter_function(self):
+        fablib = FablibManager()
+        fablib.list_sites(
+            filter_function=lambda s: s["ConnectX-5 Available"] > 3
+            and s["NVMe Available"] <= 10
+        )
+
 
 if __name__ == "__main__":
     unittest.main()