require 'socket' require 'net/http' # Adapted from code by Jon Leighton # https://github.com/jonleighton/focused_controller/blob/ec7ccf1/test/acceptance/app_test.rb class DummyApp def initialize(environment) raise ArgumentError, "Environment must be development or production" unless ["development", "production"].include?(environment.to_s) @environment = environment end attr_reader :environment def url "http://#{localhost}:#{port}" end def get(path) Net::HTTP.get(URI(url + path)) end def within_app(&block) Dir.chdir(root, &block) end def start_server within_app do IO.popen("bundle exec rails s -e #{@environment} -p #{port} 2>&1") do |out| start = Time.now started = false output = "" timeout = 60.0 while !started && !out.eof? && Time.now - start <= timeout output << read_output(out) sleep 0.1 begin TCPSocket.new(localhost, port) rescue Errno::ECONNREFUSED else started = true end end raise "Server failed to start:\n#{output}" unless started yield Process.kill("KILL", out.pid) File.delete("tmp/pids/server.pid") end end end private def root File.expand_path("../../dummy", __FILE__) end def localhost "127.0.0.1" end def port @port ||= begin server = TCPServer.new(localhost, 0) server.addr[1] ensure server.close if server end end def read_output(stream) read = IO.select([stream], [], [stream], 0.1) output = "" loop { output << stream.read_nonblock(1024) } if read output rescue Errno::EAGAIN, Errno::EWOULDBLOCK, EOFError output end end