on site with rosters and existing gradebook entries, use the submit final grades option and answer yes to questions. after the myucdavis bubblesheet tries to open, check the events in the sakai_event table for events for this site. verify that an event was recorded to indicate the submission was done.
for site:DLW test ENL 117 A01-A06 FQ 2011 after final grade submission for 83 students found the following event: gradebook2.submitFinalGrades /gradebook/084788a9-e17e-47fe-b3fe-a3030ddc0849/count/83
DLW test ENL 117 A01-A06 FQ 2011 has 83 students, which matches the count in the event data.
on a site with no current students, submitted final grade for 0 students and got the following event: gradebook2.submitFinalGrades /gradebook/b136468b-bf1e-4d2f-8936-6be00f429d69/count/0
Consistently use postEvent(...) in Gradebook2ComponentServiceImpl to prevent potential NPE