diff --git a/stdlib/ut.lsp b/stdlib/ut.lsp
new file mode 100644
index 0000000..2701f01
--- /dev/null
+++ b/stdlib/ut.lsp
@@ -0,0 +1,36 @@
+
+(defun ut::assert-equal (value form) (do 
+		(define fvalue (eval form))
+		(if (= value fvalue)
+			1
+			nil
+		)
+	))
+
+(defun ut::assert-true (test)
+	(ut::assert-equal 1 test))
+
+(defun ut::assert-false (test)
+	(ut::asertt-equal nil test))
+
+
+(defun ut::define-test (name exp_list)
+    (set! ut::tests_list (push ut::tests_list (list name exp_list)))) 
+
+(defun ut::run-tests () 
+	(do 
+		(for t ut::tests_list 
+			(if (eval (index t 1)) 
+				(print (+ "OK  -> " (index t 0))) 
+				(print (+ "ERR -> " (index t 0))))
+		)))
+
+(define ut::tests_list '())
+; TODO (run-test name)
+
+
+;; example of usage
+;; (ut::define-test "je to dvojka" '(ut::assert-equal 2 (+ 1 1)))
+;; (ut::define-test "je to trojka" '(ut::assert-equal 3 (+ 1 1)))
+;; (ut::run-tests)
+
diff --git a/tests/test.lsp b/tests/test.lsp
index d261f2c..871ea7d 100644
--- a/tests/test.lsp
+++ b/tests/test.lsp
@@ -1,4 +1,10 @@
 ; it is expected to be called from parent directory ie: ml -f tests/test.lisp
+(include "/usr/local/var/mlisp/terminal.lsp")
+
+;; unit tests could be in this way
+;; (include "/usr/local/var/mlisp/ut.lsp")
+;; (ut::define-test "result of (and (> 2 1) (> 2 1))" '(ut::assert-true (and (> 2 1) (> 2 1))))
+;; (ut::run-tests)
 
 (print "Test starts")