Robot Has No Heart

Stripe only allows you to set a fixed redirect URL in your test OAuth settings. This is problematic because you need to redirect to a different host and port depending on whether you are in development or test mode. In other words, there is a global callback that needs to be routed correctly to local callbacks.

My workaround is to use a simple rack application that redirects any incoming requests to the selected host and port. The Capybara host and port is written out to a file on spec start, and if that isn’t present it assumes development. It is clearly a hack, but works fairly well until Stripe provides a better way to do it.

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# stripe.ru
run lambda {|env|
  req = Rack::Request.new(env)

  server_file = "/tmp/capybara_server"
  host_and_port = if File.exists?(server_file)
    File.read(server_file)
  else
    "localhost:3000"
  end

  response = Rack::Response.new(env)
  url = "http://#{host_and_port}"
  url << "#{req.path}"
  url << "?#{req.query_string}" unless req.query_string.empty?

  response.redirect(url)
  response.finish
}

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# spec/acceptance_helper.rb
SERVER_FILE = "/tmp/capybara_server"

Capybara.server {|app, port|
  File.open(SERVER_FILE, "w") {|f| f.write("%s:%i" % ["127.0.0.1", port]) }
  Capybara.run_default_server(app, port)
}

RSpec.configure do |config|
  config.after :suite do
    FileUtils.rm(SERVER_FILE) if File.exists?(SERVER_FILE)
  end
end

This requires the rack application to be running already (much like the database is expected to be running), which can be done thusly:

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bundle exec rackup --port 3001 stripe.ru

Set your Stripe callback to http://localhost:3001/your/callback.