DEV: load styleguide assets only when needed (#10918)

plugins/styleguide/spec/integration/assets_spec.rb

@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe 'Styleguide assets' do
+  before do
+    SiteSetting.styleguide_enabled = true
+    sign_in(Fabricate(:admin))
+  end
+
+  context 'visits homepage' do
+    it 'doesn’t load styleguide assets' do
+      get '/'
+      expect(response.body).to_not include('styleguide')
+    end
+  end
+
+  context 'visits styleguide' do
+    it 'loads styleguide assets' do
+      get '/styleguide'
+      expect(response.body).to include('styleguide')
+    end
+  end
+end