diff --git a/test/ThriftTest.thrift b/test/ThriftTest.thrift
index 56adf39..ca70873 100644
--- a/test/ThriftTest.thrift
+++ b/test/ThriftTest.thrift
@@ -115,6 +115,14 @@
   4: binary binary_field
 }
 
+union SomeUnion {
+  1: map<Numberz, UserId> map_thing,
+  2: string string_thing,
+  3: i32 i32_thing,
+  4: Xtruct3 xtruct_thing,
+  5: Insanity insanity_thing
+}
+
 exception Xception {
   1: i32 errorCode,
   2: string message