diff --git a/test/rustint/core_test.clj b/test/rustint/core_test.clj
index e56d168..864464b 100644
--- a/test/rustint/core_test.clj
+++ b/test/rustint/core_test.clj
@@ -463,6 +463,33 @@
 
 (deftest test-ya-declarado-localmente-01
   (testing "Test 01 ya-declarado-localmente?"
-    (is (= (ya-declarado-localmente? 'Write [[0] [['io ['lib '()] 0] ['Write ['lib '()] 0] ['entero_a_hexa ['fn [(list ['n (symbol ":") 'i64]) 'String]] 2]]]) true))
+    (is (= (ya-declarado-localmente?
+             'Write
+             [
+              [0]
+              [
+               ['io ['lib '()] 0]
+               ['Write ['lib '()] 0]
+               ['entero_a_hexa ['fn [(list ['n (symbol ":") 'i64]) 'String]] 2]
+              ]
+            ]
+          ) true))
+  )
+)
+
+(deftest test-ya-declarado-localmente-02
+  (testing "Test 02 ya-declarado-localmente?"
+    (is (= (ya-declarado-localmente?
+             'Read
+             [
+              [0]
+              [
+               ['io ['lib '()] 0]
+               ['Write ['lib '()] 0]
+               ['entero_a_hexa ['fn [(list ['n (symbol ":") 'i64]) 'String]] 2]
+              ]
+            ]
+            )
+          false))
   )
 )