diff --git a/test/rustint/core_test.clj b/test/rustint/core_test.clj
index 98eb094..6c3db2b 100644
--- a/test/rustint/core_test.clj
+++ b/test/rustint/core_test.clj
@@ -239,3 +239,20 @@
     (is (nil? (dump '[HLT])))
   )
 )
+
+(deftest dump-03
+  (testing "Test 03 dump"
+    (let [
+          printed (with-out-str (dump nil))
+      ]
+      (is (= printed "0 nil\n"
+))
+    )
+  )
+)
+
+(deftest dump-03-nil
+  (testing "Test 03 dump nil"
+    (is (nil? (dump nil)))
+  )
+)