FIX: after changing post owner, profile pages still showed previous owner and incorrect topic and post counts

lib/post_revisor.rb

@@ -211,6 +211,11 @@ class PostRevisor
           @post.is_first_post? ? {topic_count: new_owner.topic_count + 1} : {}
         ))
       end
+      UserAction.where( target_post_id: @post.id,
+                        user_id: @post.user_id,
+                        action_type: [UserAction::NEW_TOPIC, UserAction::REPLY, UserAction::RESPONSE] )
+                .find_each { |ua| ua.destroy }
+      # UserActionObserver will create new UserAction records for the new owner
     end
 
     POST_TRACKED_FIELDS.each do |field|

spec/services/post_owner_changer_spec.rb

@@ -35,16 +35,29 @@ describe PostOwnerChanger do
       expect(p1.user).to eq(p2.user)
     end
 
-    it "updates users' topic and post counts" do
-      p1user = p1.user
-      p2user = p2.user
+    context "integration tests" do
+      let(:p1user) { p1.user }
+      let(:p2user) { p2.user }
+
+      before do
         topic.user_id = p1user.id
         topic.save!
 
         p1user.user_stat.update_attributes(topic_count: 1, post_count: 1)
         p2user.user_stat.update_attributes(topic_count: 0, post_count: 1)
 
-      described_class.new(post_ids: [p1.id, p2.id], topic_id: topic.id, new_owner: user_a, acting_user: editor).change_owner!
+        UserAction.create!( action_type: UserAction::NEW_TOPIC, user_id: p1user.id, acting_user_id: p1user.id,
+                            target_post_id: p1.id, target_topic_id: p1.topic_id, created_at: p1.created_at )
+        UserAction.create!( action_type: UserAction::REPLY, user_id: p2user.id, acting_user_id: p2user.id,
+                            target_post_id: p2.id, target_topic_id: p2.topic_id, created_at: p2.created_at )
+
+        ActiveRecord::Base.observers.enable :user_action_observer
+      end
+
+      subject(:change_owners) { described_class.new(post_ids: [p1.id, p2.id], topic_id: topic.id, new_owner: user_a, acting_user: editor).change_owner! }
+
+      it "updates users' topic and post counts" do
+        change_owners
 
         p1user.reload; p2user.reload; user_a.reload
         p1user.topic_count.should == 0
@@ -54,5 +67,22 @@ describe PostOwnerChanger do
         user_a.topic_count.should == 1
         user_a.post_count.should == 2
       end
+
+      it "updates UserAction records" do
+        g = Guardian.new(editor)
+        UserAction.stats(user_a.id, g).should == []
+
+        change_owners
+
+        UserAction.stats(p1user.id, g).should == []
+        UserAction.stats(p2user.id, g).should == []
+        stats = UserAction.stats(user_a.id, g)
+        stats.size.should == 2
+        stats[0].action_type.should == UserAction::NEW_TOPIC
+        stats[0].count.should == 1
+        stats[1].action_type.should == UserAction::REPLY
+        stats[1].count.should == 1
+      end
+    end
   end
 end