It seems some people have WAAAAAAAY too much free time ;P
Well, not really the same test, but I remember many of the drives at school these old 486 computers used were really weird. FIrst off, the mechanism sounds rather grindy anyway. While it was going back in, if you held the tray for a sec, it would pop, then go back in. After sitting there for a second or so, it would pop like 5 times, then eject back out! LOL, I got(or had) a few of those old drives if anyone's curious what i'm talking about.
As for testing, I'm not about to sit by my drives and see how many times they'll go in and out. I got some oldies, but still. Perhaps if there's a program to do this, I'll let it go for a while...