only export active learning outcomes and groups

test plan:
* create a course with multiple learning outcomes
* delete one of them
* copy the course
* the deleted outcome should not re-appear in the copy

fixes #CNVS-4358

Change-Id: I2ec16a250d2bcaf70ab0e06d5711e18a2839c415
Reviewed-on: https://gerrit.instructure.com/34798
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Jeremy Stanley <jeremy@instructure.com>
Product-Review: Jeremy Stanley <jeremy@instructure.com>
QA-Review: Clare Strong <clare@instructure.com>

lib/cc/learning_outcomes.rb

@@ -56,11 +56,11 @@ module CC
     end
 
     def process_outcome_group_content(node, group)
-      group.child_outcome_groups.each do |item|
+      group.child_outcome_groups.active.each do |item|
         next unless export_object?(item, 'learning_outcomes') || export_object?(item, 'learning_outcome_groups')
         process_outcome_group(node, item)
       end
-      group.child_outcome_links.each do |item|
+      group.child_outcome_links.active.each do |item|
         item = item.content
         next unless export_object?(item, 'learning_outcomes')
         process_learning_outcome(node, item, group)

spec/models/content_migration_spec.rb

@@ -780,6 +780,26 @@ describe ContentMigration do
       lo3_new.data.should == lo3.data
     end
 
+    it "should not copy deleted learning outcomes into the new course" do
+      old_root = @copy_from.root_outcome_group
+
+      log = @copy_from.learning_outcome_groups.new
+      log.context = @copy_from
+      log.title = "An outcome group"
+      log.description = "<p>Groupage</p>"
+      log.save!
+      old_root.adopt_outcome_group(log)
+
+      lo = create_outcome(@copy_from, log)
+      lo2 = create_outcome(@copy_from, log)
+      lo2.destroy
+
+      run_course_copy
+
+      @copy_to.created_learning_outcomes.count.should == 1
+      @copy_to.created_learning_outcomes.first.migration_id.should == mig_id(lo)
+    end
+
     it "should relink to external outcomes" do
       account = @copy_from.account
       a_group = account.root_outcome_group