Simple Webrick server for testing callbacks in ruby tests

callback_server.rb

require 'webrick'
require 'rack'
require 'rack/query_parser'

class CallbackServer
  ENDPOINT = '/callbacks'

  attr_reader :requests

  def initialize
    @requests = []
  end

  def start
    Thread.abort_on_exception = true
    @server_thread = Thread.new { server.start }
  end

  def stop
    @server.shutdown
  end

  def callback_url
    "http://localhost:#{port}#{ENDPOINT}"
  end

  def port
    @server[:Port]
  end

  def server
    logger = WEBrick::Log::new("/dev/null", WEBrick::Log::DEBUG) # ERROR
    @server ||= WEBrick::HTTPServer.new(Logger: logger, :Port => 0)
    @server.mount_proc(ENDPOINT) do |req, res|
      @requests << Rack::QueryParser.make_default(100, 100).parse_query(req.body)
    end
    @server
  end
end