add first compatibles test

test/rustint/core_test.clj

@@ -61,3 +61,9 @@
     (is (= (pasar-a-int [10]) [10]))
   )
 )
+
+(deftest compatibles-test01
+  (testing "Test 01 compatibles?"
+    (is (= (compatibles? 'i64 5) true))
+  )
+)