Given /^I visit subdomain "(.+)"$/ do |sub|
  Capybara.default_host = "#{sub}.example.com" #for Rack::Test
  Capybara.app_host = "http://#{sub}.example.com:9887" if Capybara.current_driver == :culerity
end

Scenario: subdomain scenario
  Given I visit subdomain "subdomain"

解决方法@H_404_18@

好的,这里应该是一个相当直截了当且容易理解的黑手起家Capybara,产生所需的行为,即能够在每次切换子域时创建一个新的会话.这对于用户在一个域中注册的站点(其导致为其帐户创建的子域),然后最终需要导航到该子域是有用的.

首先(这部分在其他解决方案中相当普遍),然后给自己一个方法来改变黄瓜级别的Capybara.default_host.我这样做：

Then /^I switch the subdomain to (\w+)$/ do |s|
  Capybara.default_host = "#{s}.smackaho.st"
end

在您要使用新子域的时候,将此步骤保存在黄瓜功能中.例如：

When I open the email
Then I should see "http://acme.rightbonus.com/users/confirmation" in the email body

Given I switch the subdomain to acme
When I follow "Click here to finish setting up your account" in the email
Then I should be on the user confirmation page for acme

现在为了使这项工作的神奇monkeypatching.基本上,您希望Capybara足够聪明,以检测子域是否已更改并重置其RackTest会话对象.

# features/support/capybara.rb

class Capybara::Driver::RackTest
  # keep track of the default host you started with
  def initialize(app)
    raise ArgumentError,"rack-test requires a rack application,but none was given" unless app
    @app = app
    @default_host = Capybara.default_host
  end

  def process(method,path,attributes = {})
    reset_if_host_has_changed
    path = ["http://",@default_host,path].join
    return if path.gsub(/^#{request_path}/,'') =~ /^#/
    path = request_path + path if path =~ /^\?/
    send(method,to_binary(path),to_binary( attributes ),env)
    follow_redirects!
  end

  private

  def build_rack_mock_session # :nodoc:
    puts "building a new Rack::MockSession for " + Capybara.default_host
    Rack::MockSession.new(app,Capybara.default_host || "www.example.com")
  end

  def reset_if_host_has_changed
    if @default_host != Capybara.default_host
      reset! # clears the existing MockSession
      @default_host = Capybara.default_host
    end
  end
end

此补丁适用于Capybara 0.4.1.1,除非经过修改,否则可能无法使用不同的版本.祝你好运.