Added tests.

test/test_helper.rb

@@ -0,0 +1,24 @@
+require "rubygems"
+require "bundler"
+
+Bundler.setup
+
+require "active_model_serializers"
+require "active_support/json"
+require "test/unit"
+
+module TestHelper
+  Routes = ActionDispatch::Routing::RouteSet.new
+  Routes.draw do
+    match ':controller(/:action(/:id))'
+    match ':controller(/:action)'
+  end
+
+  ActionController::Base.send :include, Routes.url_helpers
+end
+
+ActiveSupport::TestCase.class_eval do
+  setup do
+    @routes = ::TestHelper::Routes
+  end
+end