diff --git a/src/test/resources/RangeWithInvalidIntegerPattern.yang b/src/test/resources/RangeWithInvalidIntegerPattern.yang
new file mode 100644
index 0000000..60c7992
--- /dev/null
+++ b/src/test/resources/RangeWithInvalidIntegerPattern.yang
@@ -0,0 +1,10 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    leaf-list invalid-interval {
+        type int32 {
+            range "a..z";
+         }
+    }
+}