diff --git a/test/rustint/core_test.clj b/test/rustint/core_test.clj
index c7acccb..740941d 100644
--- a/test/rustint/core_test.clj
+++ b/test/rustint/core_test.clj
@@ -266,3 +266,13 @@
     )
   )
 )
+
+(deftest convertir-formato-impresion-01
+  (testing "Test 01 convertir-formato-impresion"
+    (is (=
+         (convertir-formato-impresion '("Hola, mundo 2!"))
+         '("Hola, mundo 2!")
+        )
+    )
+  )
+)