tests: add misc controller tests.

test/functional/artist_commentary_versions_controller_test.rb

@@ -0,0 +1,12 @@
+require 'test_helper'
+
+class ArtistCommentaryVersionsControllerTest < ActionController::TestCase
+  context "The artist commentary versions controller" do
+    context "index action" do
+      should "render" do
+        get :index
+        assert_response :success
+      end
+    end
+  end
+end