This test requires an assignment with several submissions.
1. Login as a teacher, access the assignment and follow the 'View x submitted assignments' link.
2. Tick the 'Allow quick grading' checkbox then click the 'Save preferences' button.
3. Add grades and comments to several submissions then click the 'Save all my feedback' button.
4. Check that all grades and comments have been saved and that in the Edit column you now see 'Update grade' instead of 'Grade'