diff --git a/utils/yangutils/src/test/resources/UnionWhenTypeInLeaf.yang b/utils/yangutils/src/test/resources/UnionWhenTypeInLeaf.yang
new file mode 100644
index 0000000..65c0369
--- /dev/null
+++ b/utils/yangutils/src/test/resources/UnionWhenTypeInLeaf.yang
@@ -0,0 +1,16 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list valid {
+        key "invalid-interval";
+        leaf invalid-interval {
+            type union {
+                type int32;
+                type enumeration {
+                    enum "unbounded";
+                }
+            }
+        }
+    }
+}