add content_migration settings for Q.N CC import

closes QUIZ-4809

test plan:
- make a Q.N CC import
- Check Canvas api endpoint:
    http://canvas.docker/api/v1/courses/<course_id>/content_migrations/<your_id>
- make sure imported_assets/lti_assginment_quiz_set appears, and
  format is like [[xxx, xxx],[xxx, xxx]...]

Change-Id: Id174ee7742dc34b76c7e7f4afedbaaed0062ea4d
Reviewed-on: https://gerrit.instructure.com/155273


Reviewed-by: Steve Kacsmark <skacsmark@instructure.com>
Tested-by: Jenkins
QA-Review: Steve Kacsmark <skacsmark@instructure.com>
Product-Review: Kevin Dougherty <jdougherty@instructure.com>

app/models/quizzes_next/importers/course_content_importer.rb

@@ -28,17 +28,34 @@ module QuizzesNext::Importers
       ::Importers::CourseContentImporter.
         import_content(context, @data, params, @migration)
 
+      migration_lti!
+    end
+
+    private
+
+    def migration_lti!
+      lti_assignment_quiz_set = []
       @migration.imported_migration_items_by_class(Assignment).each do |assignment|
         next unless assignment.quiz?
+        quiz = assignment.quiz
+        lti_assignment_quiz_set << [assignment.global_id, quiz.global_id]
         assignment.workflow_state = 'importing'
         assignment.importing_started_at = Time.zone.now
         assignment.quiz_lti! && assignment.save!
+
+        # Quizzes will be created in Quizzes.Next app
+        # assignment.quiz_lti! breaks relation to quiz. Destroying Quizzes:Quiz wouldn't
+        # mark assginment to be deleted.
+        quiz.destroy
       end
+      setup_assets_imported(lti_assignment_quiz_set)
+    end
 
-      # Quizzes will be created in Quizzes.Next app
-      # assignment.quiz_lti! breaks relation to quiz. Destroying Quizzes:Quiz wouldn't
-      # mark assginment to be deleted.
-      @migration.imported_migration_items_by_class(Quizzes::Quiz).each(&:destroy)
+    def setup_assets_imported(lti_assignment_quiz_set)
+      imported_asset_hash = @migration.migration_settings[:imported_assets] || {}
+      imported_asset_hash[:lti_assignment_quiz_set] = lti_assignment_quiz_set
+      @migration.migration_settings[:imported_assets] = imported_asset_hash
+      @migration.save!
     end
   end
 end

spec/models/quizzes_next/importers/course_content_importer_spec.rb

@@ -31,6 +31,7 @@ describe QuizzesNext::Importers::CourseContentImporter do
     let(:assignment3) { instance_double('Assignment') }
     let(:quiz1) { instance_double('Quizzes::Quiz') }
     let(:quiz2) { instance_double('Quizzes::Quiz') }
+    let(:quiz3) { instance_double('Quizzes::Quiz') }
     let(:data) { double }
     let(:time_now) { Time.zone.parse('03 May 2018 00:00:00 +0000') }
 
@@ -42,11 +43,17 @@ describe QuizzesNext::Importers::CourseContentImporter do
       allow(migration).
         to receive(:imported_migration_items_by_class).
         with(Quizzes::Quiz).
-        and_return([quiz1, quiz2])
+        and_return([quiz1, quiz2, quiz3])
       allow(Time.zone).to receive(:now).and_return(time_now)
       allow(assignment1).to receive(:quiz?).and_return(true)
       allow(assignment2).to receive(:quiz?).and_return(true)
       allow(assignment3).to receive(:quiz?).and_return(false)
+      allow(assignment1).to receive(:quiz).and_return(quiz1)
+      allow(assignment2).to receive(:quiz).and_return(quiz2)
+      allow(assignment1).to receive(:global_id).and_return(112_233)
+      allow(assignment2).to receive(:global_id).and_return(888_777)
+      allow(quiz1).to receive(:global_id).and_return(123_456)
+      allow(quiz2).to receive(:global_id).and_return(22_345)
     end
 
     it 'makes lti assignments' do
@@ -62,7 +69,11 @@ describe QuizzesNext::Importers::CourseContentImporter do
       expect(assignment2).to receive(:save!)
       expect(quiz1).to receive(:destroy)
       expect(quiz2).to receive(:destroy)
+      expect(quiz2).not_to receive(:destroy)
       importer.import_content(double)
+
+      expect(migration.migration_settings[:imported_assets][:lti_assignment_quiz_set]).
+        to eq([[112_233, 123_456], [888_777, 22_345]])
     end
   end