I never could find a test option either, but I did get email notifications to work on 5 sp3. I don't mean to question you...I'll just show (for example) what my settings are:
Go to Alarm button
Alarm Definition tab
Highlight a name (Device Reboot)
Modify
Action
Check Email (and enter email address)
Click on Settings
Enter SMTP host address
Anyway, that's how I get notification of a device reboot.