Add tests

spec/controllers/topics_controller_spec.rb

@@ -747,6 +747,22 @@ describe TopicsController do
       expect(IncomingLink.count).to eq(1)
     end
 
+    it "doesn't renders the print view by default" do
+      user = Fabricate(:user)
+      get :show, topic_id: topic.id, slug: topic.slug, print: true
+
+      expect(response).to be_forbidden
+    end
+
+    it 'renders the print view when enabled' do
+      SiteSetting.max_prints_per_hour_per_user = 10
+
+      user = Fabricate(:user)
+      get :show, topic_id: topic.id, slug: topic.slug, print: true
+
+      expect(response).to be_successful
+    end
+
     it 'records redirects' do
       @request.env['HTTP_REFERER'] = 'http://twitter.com'
       get :show, { id: topic.id }