diff --git a/src/test/resources/PatternStatementInsideTypeDef.yang b/src/test/resources/PatternStatementInsideTypeDef.yang
new file mode 100644
index 0000000..edb625e
--- /dev/null
+++ b/src/test/resources/PatternStatementInsideTypeDef.yang
@@ -0,0 +1,15 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    typedef invalid-interval {
+        type string {
+            pattern "[a-zA-Z]";
+         }
+    }
+    leaf xyz {
+       type invalid-interval {
+           pattern "[a-z]";
+       }
+    }
+}