diff --git a/tests/test_timer.py b/tests/test_timer.py
new file mode 100644
index 0000000..becb79e
--- /dev/null
+++ b/tests/test_timer.py
@@ -0,0 +1,12 @@
+import threading
+import time
+
+def f():
+    print("HHHHH")
+    # call f() again in 60 seconds
+    threading.Timer(3, f).start()
+
+# start calling f now and every 60 sec thereafter
+
+if __name__ == '__main__':
+    f()
\ No newline at end of file