SSL with Capybara and Selenium

ssl_hack.rb

# Hack for Capybara to use SSL connections using selenium.
#
### Usage:
# Require this from rails_helper.rb
#
### Steps to generate a SSL certificate on a Linux box:
# 0. Starting from 'Rails.root'
# 1. Generate private key. Type in some password.
# $ openssl genrsa -des3 -out private.key 4096
# 2. Generate certificate sign request
# $ openssl req -new -key private.key -out server.csr
# 3. Store decrypted private key in test/. Type in your password from before.
#    Then, get rid of the original private key file.
# $ openssl rsa -in private.key -out test/private.key
# $ shred private.key && rm private.key
# 4. Self-sign your new server certificate
# $ openssl x509 -req -days 3650 -in server.csr -signkey test/private.key -out test/certificate.pem
##### - DONE!

# Monkey patched responsive? for SSL. Taken from:
# https://github.com/jnicklas/capybara/issues/1121
module Capybara
  class Server
    def responsive?
      return false if @server_thread && @server_thread.join(0)

      http = Net::HTTP.new(host, @port)
      http.use_ssl = true
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE
      res = http.get('/__identify__')

      if res.is_a?(Net::HTTPSuccess) or res.is_a?(Net::HTTPRedirection)
        return res.body == @app.object_id.to_s
      end
    rescue SystemCallError
      return false
    end
  end
end

# Helper class to start a WEBrick server with SSL
class SslServer
  TEST_CERTIFICATE = Rails.root.join('test', 'certificate.pem').to_s
  TEST_PRIVATE_KEY = Rails.root.join('test', 'private.key').to_s

  require 'rack/handler/webrick'
  require 'webrick/https'

  def initialize
    @certificate = OpenSSL::X509::Certificate.new File.read TEST_CERTIFICATE
    @key = OpenSSL::PKey::RSA.new File.read TEST_PRIVATE_KEY
  end

  def run(app, port)
    options = {
      Port: port,
      AccessLog: [],
      Logger: WEBrick::Log::new(nil, 0),
      SSLEnable: true,
      SSLCertificate: @certificate,
      SSLPrivateKey: @key
    }

    Rack::Handler::WEBrick.run app, options
  end

end

# Configure Capybara for SSL.
RSpec.configure do |config|
  Capybara.register_driver :selenium_ssl do |app|
    profile = Selenium::WebDriver::Firefox::Profile.new
    profile.secure_ssl = false
    profile.assume_untrusted_certificate_issuer = false
    Capybara::Selenium::Driver.new app, browser: :firefox, profile: profile
  end

  Capybara.javascript_driver = :selenium_ssl
  Capybara.app_host = "https://#{Capybara.server_host}:#{Capybara.server_port}"

  Capybara.server do |app, port|
    server = SslServer.new
    server.run app, port
  end

end