add test

test/rustint/core_test.clj

@@ -276,3 +276,13 @@
     )
   )
 )
+
+(deftest get-rust-formatters-01
+  (testing "Test 01 get-rust-formatters"
+    (is (=
+          (get-rust-formatters "Hola, Mundo!")
+          '()
+        )
+    )
+  )
+)