public void GradeSubmissionTrivialFailure()
{
var db = Utils.MakeMockDatabase();
var controller = MakeController(db);
string uid = StudentControllerTests.AddOneStudent(db);
uint cid = AddCourseAndClass(db);
Enroll(uid, cid, db);
AddAssignmentAndCategory(cid, db);
// no submission
db.SaveChanges();
var jsonResult = controller.GradeSubmission("CS", 3550, "Spring", 2019,
"Quizzes", "Bonus Quiz", uid, 79) as JsonResult;
Assert.False(Utils.ResultSuccessValue(jsonResult));
}