diff --git a/tests/example-schema.yang b/tests/example-schema.yang
index 6e040ae..db27d57 100644
--- a/tests/example-schema.yang
+++ b/tests/example-schema.yang
@@ -341,4 +341,13 @@
         }
     }
 
+    leaf iid-valid {
+        type instance-identifier;
+    }
+
+    leaf iid-relaxed {
+        type instance-identifier {
+            require-instance false;
+        }
+    }
 }