show turnitin info for file upload submissions, fixes #6029

turnitin data wouldn't show up for file upload submissions in the
gradebook if there were over 100 assignments/students/submissions
(that's the threshold where we do ajax requests instead of just dumping
json on the page). fixed the json to be consistent.

test plan:
1. enable turnitin (or fake up some data)
2. do a file upload submission as a student
3. as the teacher, go into the gradebook
4. confirm that the turnitin icon shows up
5. add 100 students or assignments to the course (this will pass the
   threshold)
6. ensure the icon still shows in the gradebook

Change-Id: I164895b261e876dab7fb4a007c617552ae31de34
Reviewed-on: https://gerrit.instructure.com/9013
Tested-by: Hudson <hudson@instructure.com>
Reviewed-by: Brian Palmer <brianp@instructure.com>

app/controllers/gradebooks_controller.rb

@@ -222,7 +222,7 @@ class GradebooksController < ApplicationController
       else
         @submissions = @context.submissions.scoped(scope_options)
       end
-      render :json => @submissions
+      render :json => @submissions.to_json(:include => [:attachments, :quiz_submission, :submission_comments])
     end
   end
   protected :gradebook_init_json

spec/selenium/gradebooks_spec.rb

@@ -21,7 +21,8 @@ describe "gradebooks" do
         :course => @course,
         :name => 'first assignment',
         :due_at => nil,
-        :points_possible => 10
+        :points_possible => 10,
+        :submission_types => 'online_text_entry,online_upload'
       }
     )
   end
@@ -73,4 +74,23 @@ describe "gradebooks" do
     student_cell.should include_text @section1.display_name
     student_cell.should include_text @section2.display_name
   end
+
+  it "should show turnitin data" do
+    s1 = @assignment.submit_homework(@student1, :submission_type => 'online_text_entry', :body => 'asdf')
+    s1.update_attribute :turnitin_data, {"submission_#{s1.id}" => {:similarity_score => 0.0, :web_overlap => 0.0, :publication_overlap => 0.0, :student_overlap => 0.0, :state => 'none'}}
+    a = attachment_model(:context => @user, :content_type => 'text/plain')
+    s2 = @assignment.submit_homework(@student2, :submission_type => 'online_upload', :attachments => [a])
+    s2.update_attribute :turnitin_data, {"attachment_#{a.id}" => {:similarity_score => 1.0, :web_overlap => 5.0, :publication_overlap => 0.0, :student_overlap => 0.0, :state => 'acceptable'}}
+
+    get "/courses/#{@course.id}/gradebook"
+    wait_for_ajaximations
+    ff('img.turnitin:visible').size.should eql 2
+
+    # now create a ton of students so that the data loads via ajax
+    100.times { |i| student_in_course(:active_all => true, :name => "other guy #{i}") }
+
+    get "/courses/#{@course.id}/gradebook"
+    wait_for_ajaximations
+    ff('img.turnitin:visible').size.should eql 2
+  end
 end