diff --git a/addons/event/test/ui/onchange_events.yml b/addons/event/test/ui/onchange_events.yml
index d6f58ed37db..ec8dbc78858 100644
--- a/addons/event/test/ui/onchange_events.yml
+++ b/addons/event/test/ui/onchange_events.yml
@@ -8,3 +8,8 @@
 -
   !python {model: event.registration}: |
     self.onchange_partner_id(cr, uid, ref('reg_1_1'), ref("base.res_partner_asus"), ref("event_1"), email=False)
+-
+  I call onchange event to change the product of event.
+-
+  !python {model: event.event}: |
+    self.onchange_product(cr, uid, ref("event_1"), ref("event_product_0"))