diff --git a/src/test/resources/DerivedTypeStatement.yang b/src/test/resources/DerivedTypeStatement.yang
new file mode 100644
index 0000000..c678822
--- /dev/null
+++ b/src/test/resources/DerivedTypeStatement.yang
@@ -0,0 +1,8 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    leaf invalid-interval {
+        type "hello";
+    }
+}
\ No newline at end of file