When I create an even in Google Calendar, my test google account e-mail address receives an e-mail with the subject "Invitation: event title" but my main account (the one creating the event) does not.
I can use the event link in the e-mail to bring up a web page which allows me to mark my test account as attending, and when I log in to google calendar with that account, I can see the Going? Yes - Maybe - No | Remove section at the bottom of the event pop-up. I don't see a similar section at the bottom of the event in my main google account calendar though.
How can I record myself as attending my own event?