diff --git a/tests/Basic/Basic.Tests.cs b/tests/Basic/Basic.Tests.cs
index 5fed717c..f6ee0a47 100644
--- a/tests/Basic/Basic.Tests.cs
+++ b/tests/Basic/Basic.Tests.cs
@@ -164,5 +164,14 @@ public class BasicTests : GeneratorTestFixture
         var doubleSum = delegates.A(2) + delegates.B(2);
         Assert.AreEqual(8, doubleSum);
     }
+
+    [Test]
+    public void TestUnion()
+    {
+        Hello.NestedPublic nestedPublic = new Hello.NestedPublic();
+        nestedPublic.j = 5;
+        Assert.That(nestedPublic.l, Is.EqualTo(5));
+        Assert.That(nestedPublic.g, Is.Not.EqualTo(0));
+    }
 }
  
\ No newline at end of file
diff --git a/tests/Basic/Basic.h b/tests/Basic/Basic.h
index b0fa57df..f09a6896 100644
--- a/tests/Basic/Basic.h
+++ b/tests/Basic/Basic.h
@@ -90,6 +90,7 @@ public:
     union NestedPublic {
         int j;
         float g;
+        long l;
     };
 
     Hello ();