TestServer

gistfile1.rb

class TestServer
  def initialize(options)
    @server_port = options.fetch(:server_port)
    @client_port = options.fetch(:client_port)
  end

  def start
    @pid = spawn(command)
  end

  def kill
    Process.kill "INT", @pid
    exit 1
  end

  def ready?
    begin
      return TCPSocket.new("127.0.0.1", @client_port)
    rescue
      return false
    end
  end

  def command
    "cd client && ember serve --port #{@client_port} --live-reload=false --proxy=http://localhost:#{@server_port}"
  end
end

# Somewhere in spec/support

client_port = 4100
server_port = 4101

Capybara.server_port = server_port
Capybara.app_host = "http://localhost:#{client_port}"

server = TestServer.new(client_port: client_port, server_port: server_port)

fork { server.start }

loop do
  break if server.ready?
  sleep 1
end

trap "INT" do
  server.kill
  exit 1
end