diff --git a/test/rustint/core_test.clj b/test/rustint/core_test.clj
index 9351539..ec6cefe 100644
--- a/test/rustint/core_test.clj
+++ b/test/rustint/core_test.clj
@@ -306,3 +306,13 @@
     )
   )
 )
+
+(deftest get-rust-formatters-04
+  (testing "Test 04 get-rust-formatters"
+    (is (=
+          (get-rust-formatters "Las raices cuadradas de {} son +{:.8} y -{:.8}")
+          '(nil ".8" ".8")
+        )
+    )
+  )
+)