Add testing

bin/test

@@ -0,0 +1,5 @@
+#!/usr/bin/env ruby
+$: << File.expand_path("../test", __dir__)
+
+require "bundler/setup"
+require "rails/plugin/test"

test/test_helper.rb

@@ -0,0 +1,8 @@
+require "bundler/setup"
+require "active_support/test_case"
+require "active_support/testing/autorun"
+
+ActiveSupport::LogSubscriber.logger = ActiveSupport::Logger.new(STDOUT) if ENV["VERBOSE"]
+
+class ActiveSupport::TestCase
+end