diff --git a/src/test/resources/PatternSubStatements.yang b/src/test/resources/PatternSubStatements.yang
new file mode 100644
index 0000000..3e792c6
--- /dev/null
+++ b/src/test/resources/PatternSubStatements.yang
@@ -0,0 +1,13 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    leaf invalid-interval {
+        type string {
+            pattern "[a-zA-Z]" {
+                description "pattern description";
+                reference "pattern reference";
+            }
+         }
+    }
+}