javascript - Guard 执行所有规范导致 Capybara + JS 测试返回 : 'Rack application timed out during boot'

Question

我有一个带有 Rsped 的 capybara 脚本，其中包括 :js => true，当我单独执行脚本时，该脚本运行良好。耶!这是脚本:

# spec/requests/capybara_and_js_spec.rb
require 'spec_helper'

describe "Associating Articles with Menus" do
  it "should include javascript", js: true do
    visit root_path
    page.should have_selector('script')
  end
end

当我执行脚本时，我得到:

.
Finished in 4.22 seconds
1 example, 0 failures

但是，当我通过 Guard Run all 使用我的所有规范执行相同的脚本时，我得到了这个(我省略了几千个测试)

........................*...*..............Rack application timed out during boot
Rack application timed out during boot
F.....................................

Answer 1

我花了很多时间研究这个问题，并发现了一些关于这个问题的有趣博客文章，但没有一个解决方案对我有用。

以下是我尝试过的选项:

我从 Capybara Selenium 的默认 js 驱动程序切换到 Webkit 和 Poltergeist，如下所示:

# Gemfile
gem "capybara-webkit"

# spec/spec_helper.rb
Spork.prefork do
  Capybara.javascript_driver = :webkit
end

和

# Gemfile
  gem "poltergeist"

# spec/spec_helper.rb
Spork.prefork do
  require 'capybara/poltergeist'
  Capybara.javascript_driver = :poltergeist
end

但两者都不走运。

根据 this thread和 this article我试过:

# spec/spec_helper.rb
Spork.prefork do
  Capybara.server_boot_timeout = 600  # Default is 10 my entire suite
end                                   # takes ~550s to run, that's why I
                                      # attempted such a large boot timeout in
                                      # case the time was from beginning of suite 
                                      # execution.

没用。

然后我找到this article ，所以我尝试:

# spec/spec_helper.rb
# initial advice was for cucumber, and thus recommended this to be placed in
# the features/env.rb file
def find_available_port
  server = TCPServer.new('127.0.0.1', 0)
  server.addr[1]
ensure
  server.close if server
end

if ENV['TDDIUM'] then
  Capybara.server_port = find_available_port
end

但运气不好。

我还检查了我的 database_cleaner 设置以确保 DatabaseCleaner 与我来自 FactoryGirl 的工厂很好地配合，per this issue on StackOverflow.

仍然没有运气。

接下来，我尝试从我的 Guardfile 中较低级别的 rspec 测试中解析出我的 capybara 测试，如下所示:

group 'integration tests' do
  # Capybara Tests
  guard 'rspec', spec_paths: ['spec/requests'] do
    watch(%r{^spec/requests/.+_spec\.rb})
  end  
  # Cucumber Feature Tests
  guard 'cucumber', bundler: true do
    watch(%r{^features/.+\.feature$})
  end
end

group 'unit tests' do
  rspec_paths = ['spec/controllers', 'spec/helpers', 'spec/models', 'spec/views']
  # RSpec Unit Tests
  guard 'rspec', spec_paths: rspec_paths do
    watch(%r{^spec/.+_spec\.rb$})
  end
  # Jasmine JS Unit Tests
  guard 'jasmine', all_on_start: false, all_after_pass: false do
    watch(%r{spec/javascripts/.+_spec\.(js\.coffee|js|coffee)$})
  end
end

成功了!终于!