FIX: You could update a topic to have a title that's too short if the TextCleaner

removed extra characters. Additionally, updating the title will not return an error
message to the client app if the operation fails (rather than failing silently.)

spec/controllers/topics_controller_spec.rb

@@ -487,6 +487,11 @@ describe TopicsController do
           xhr :put, :update, topic_id: @topic.id, slug: @topic.title, category: 'incredible'
         end
 
+        it "returns errors with invalid titles" do
+          xhr :put, :update, topic_id: @topic.id, slug: @topic.title, title: 'asdf'
+          expect(response).not_to be_success
+        end
+
       end
     end
   end

spec/models/topic_spec.rb

@@ -43,6 +43,15 @@ describe Topic do
 
   end
 
+  context "updating a title to be shorter" do
+    let!(:topic) { Fabricate(:topic) }
+
+    it "doesn't update it to be shorter due to cleaning using TextCleaner" do
+      topic.title = 'unread    glitch'
+      topic.save.should be_false
+    end
+  end
+
   context 'topic title uniqueness' do
 
     let!(:topic) { Fabricate(:topic) }