| # |
| # This class spawns a io.js process to run a HTTP server which accepts |
| # POST requests containing React TestUtils scripts and responds with |
| # HTML results. It provides a Rack interface, enabling this server to |
| # be run with Capybara/RackTest. |
| # |
| |
| require 'ruby2js' |
| require 'net/http' |
| require 'stringio' |
| |
| require 'capybara/rspec' |
| require 'ruby2js/filter/react' |
| |
| class ReactServer |
| @@pid = nil |
| @@port = nil |
| |
| # start a new server |
| def self.start |
| return if @@pid |
| |
| # select an available port |
| server = TCPServer.new('127.0.0.1', 0) |
| @@port = server.addr[1] |
| server.close |
| |
| # spawn a server process |
| @@pid = spawn('node', '-e', |
| Ruby2JS.convert(@@server, {ivars: {:@port => @@port}})) |
| |
| # wait for server to start |
| (0..10).each do |i| |
| begin |
| response = new.call('rack.input' => StringIO.new("response.end('hi')")) |
| return if response.first == '200' and response.last == 'hi' |
| STDERR.puts response |
| raise RuntimeError('Invalid ReactServer response received') |
| rescue Errno::ECONNREFUSED |
| sleep i * 0.1 |
| end |
| end |
| end |
| |
| # rack compatible interface |
| def call(env) |
| http = Net::HTTP.new('localhost', @@port) |
| request = Net::HTTP::Post.new('/', {}) |
| request.body = env['rack.input'].read |
| response = http.request(request) |
| [response.code, response.to_hash(), response.body] |
| end |
| |
| # stop server |
| def self.stop |
| return unless @@pid |
| http = Net::HTTP.new('localhost', @@port) |
| request = Net::HTTP::Post.new('/', {}) |
| request.body = "response.end('bye'); process.exit(0)" |
| response = http.request(request) |
| Process.wait(@@pid) |
| @@pid = nil |
| end |
| |
| # the server itself |
| @@server = proc do |
| jsdom = require("jsdom").jsdom |
| global.document = jsdom('<html><body></body></html>') |
| global.window = document.defaultView |
| global.navigator = global.window.navigator |
| |
| React = require('react') |
| ReactAddons = require('react/addons') |
| TestUtils = React.addons.TestUtils |
| Simulate = TestUtils.Simulate |
| |
| jQuery = require('jquery') |
| |
| http = require('http') |
| server = http.createServer do |request, response| |
| data = '' |
| request.on('data') do |chunk| |
| data += chunk |
| end |
| |
| request.on 'error' do |error| |
| console.log "ReactServer error: #{error.message}" |
| end |
| |
| request.on 'end' do |
| response.writeHead(200, 'Content-Type' => 'text/plain') |
| |
| begin |
| eval(data) |
| rescue => error |
| response.end(error.toString()); |
| end |
| end |
| end |
| |
| server.listen(@port) |
| end |
| end |
| |
| shared_context "react_server", server: :react do |
| # |
| # administrivia |
| # |
| before :all do |
| ReactServer.start |
| Dir.chdir File.expand_path('../../views', __FILE__) do |
| @_script = Ruby2JS.convert(File.read('app.js.rb'), file: 'app.js.rb') |
| end |
| end |
| |
| before :each do |
| @_app, Capybara.app = Capybara.app, ReactServer.new |
| end |
| |
| def on_react_server(&block) |
| locals = {} |
| instance_variables.each do |ivar| |
| next if ivar.to_s.start_with? '@_' |
| locals[ivar] = instance_variable_get(ivar) |
| end |
| |
| page.driver.post('/', @_script + ';' + |
| Ruby2JS.convert(block, react: true, ivars: locals)) |
| end |
| |
| after :each do |
| Capybara.app = @_app |
| end |
| |
| at_exit do |
| ReactServer.stop |
| end |
| end |
