ruby-on-rails-3 - 使用 Poltergeist PhantomJS Capybara 驱动程序设置 Cookie

Question

我在尝试使用 Poltergeist gem 设置 cookie 时遇到了问题，并且通过阅读 Poltergeist gem 上的已关闭问题，这似乎是我的用户错误问题，但我现在已经花了一整天的时间来尝试正确设置cookie，我似乎无法正确设置。

注意:此测试在 selenium 中运行良好，但由于 selenium 的运行时间问题，我想使用 poltergeist。

我正在处理的应用程序正在使用“_location”cookie 来确定一些整体设置，并且我需要在我第一次访问应用程序中的任何页面时访问该 cookie。否则，我会收到一个 javascript 错误，以查找由于未设置位置而未设置的值。

The README for the Poltergeist gem显示以下 cookie 用法

操作 cookie

以下方法用于检查和操作 cookie:
page.driver.cookies - 当前页面可访问的 cookie 哈希。键是 cookie 名称。这些值是 Cookie 对象，具有以下方法:name , value , domain , path , secure? , httponly? , expires .
page.driver.set_cookie(name, value, options = {}) - 设置一个cookie。选项散列可以采用以下键::domain , :path , :secure , :httponly , :expires . :expires应该是一个时间对象。
page.driver.remove_cookie(name) - 删除 cookie

-- 规范/spec_helper.rb

Capybara.register_driver :poltergeist do |app|
  Capybara::Poltergeist::Driver.new(app, :debug => true)
end

Capybara.javascript_driver = :poltergeist

--views/admin/article/new.html.haml

= link_to_function "test js", '$(this).html("js works")'

-- 规范/请求/article_products_spec.rb

require 'spec_helper'

describe "Associating Articles with Products and Product Categories" do

  before (:all) do
    @user = create(:user, role: "admin")
    5.times { create(:product_category) }
    @product_categories = ProductCategory.all
    @product_categories.each do |pc|
      4.times { create(:product, product_category: pc) }
    end
  end

  before (:each) do
    visit new_user_session_path
    page.driver.set_cookie("_location", "US")
    page.driver.cookies
    fill_in "Username Or Email", with: @user.email
    fill_in "Password", with: @user.password
    click_button "Sign In"
    visit new_admin_article_path
  end

  it "supports js", :js => true do
    click_link "test js"
    page.should have_content("js works")
  end

end

测试响应

{"name"=>"visit", "args"=>["http://127.0.0.1:64554/users/sign_in"]}
{"error"=>{"name"=>"Poltergeist.JavascriptError", "args"=>[[{"message"=>"TypeError: 'null' is not an object (evaluating 'response.custentitydefault_shipping_location')", "stack"=>"TypeError: 'null' is not an object (evaluating 'response.custentitydefault_shipping_location')\n    at http://127.0.0.1:64554/assets/non_deferred.js:12338\n    at http://127.0.0.1:64554/assets/non_deferred.js:1076\n    at http://127.0.0.1:64554/assets/non_deferred.js:1194\n    at http://127.0.0.1:64554/assets/non_deferred.js:7539 in done\n    at http://127.0.0.1:64554/assets/non_deferred.js:8325"}]]}}
{"name"=>"reset", "args"=>[]}
{"response"=>true}
F

Failures:

  1) Associating Articles with Products and Product Categories supports js
     Failure/Error: visit new_user_session_path
     Capybara::Poltergeist::JavascriptError:
       One or more errors were raised in the Javascript code on the page:

       TypeError: 'null' is not an object (evaluating 'response.custentitydefault_shipping_location')
           at http://127.0.0.1:64554/assets/non_deferred.js:12338
           at http://127.0.0.1:64554/assets/non_deferred.js:1076
           at http://127.0.0.1:64554/assets/non_deferred.js:1194
           at http://127.0.0.1:64554/assets/non_deferred.js:7539 in done
           at http://127.0.0.1:64554/assets/non_deferred.js:8325
     # ./spec/requests/article_products_spec.rb:15:in `block (2 levels) in <top (required)>'
     # ./spec/support/vcr.rb:14:in `block (2 levels) in <top (required)>'

由于这个失败，我想也许我应该在访问页面之前设置 cookie，但是当我在 Capybara 脚本中使用“访问”之前使用 page.driver.set_cookie 命令时，它实际上并没有设置任何东西.从这个修改后的代码块和这个结果集可以看出。

-- 规范/请求/article_products_spec.rb

describe "Associating Articles with Products and Product Categories" do

  before (:all) do
    @user = create(:user, role: "admin")
    5.times { create(:product_category) }
    @product_categories = ProductCategory.all
    @product_categories.each do |pc|
      4.times { create(:product, product_category: pc) }
    end
  end

  before (:each) do
    page.driver.set_cookie("_location", "US")
    page.driver.cookies
    visit new_user_session_path
    fill_in "Username Or Email", with: @user.email
    fill_in "Password", with: @user.password
    click_button "Sign In"
    visit new_admin_article_path
  end

  it "supports js", :js => true do
    click_link "test js"
    page.should have_content("js works")
  end
end

测试响应

{"name"=>"set_cookie", "args"=>[{:name=>"_location", :value=>"US", :domain=>"127.0.0.1"}]}
{"response"=>true}
{"name"=>"cookies", "args"=>[]}
{"response"=>[]}
{"name"=>"visit", "args"=>["http://127.0.0.1:64090/users/sign_in"]}
{"error"=>{"name"=>"Poltergeist.JavascriptError", "args"=>[[{"message"=>"TypeError: 'null' is not an object (evaluating 'response.custentitydefault_shipping_location')", "stack"=>"TypeError: 'null' is not an object (evaluating 'response.custentitydefault_shipping_location')\n    at http://127.0.0.1:64090/assets/non_deferred.js:12338\n    at http://127.0.0.1:64090/assets/non_deferred.js:1076\n    at http://127.0.0.1:64090/assets/non_deferred.js:1194\n    at http://127.0.0.1:64090/assets/non_deferred.js:7539 in done\n    at http://127.0.0.1:64090/assets/non_deferred.js:8325"}]]}}
{"name"=>"reset", "args"=>[]}
{"response"=>true}
F

Failures:

  1) Associating Articles with Products and Product Categories supports js
     Failure/Error: visit new_user_session_path
     Capybara::Poltergeist::JavascriptError:
       One or more errors were raised in the Javascript code on the page:

       TypeError: 'null' is not an object (evaluating 'response.custentitydefault_shipping_location')
           at http://127.0.0.1:64554/assets/non_deferred.js:12338
           at http://127.0.0.1:64554/assets/non_deferred.js:1076
           at http://127.0.0.1:64554/assets/non_deferred.js:1194
           at http://127.0.0.1:64554/assets/non_deferred.js:7539 in done
           at http://127.0.0.1:64554/assets/non_deferred.js:8325
     # ./spec/requests/article_products_spec.rb:15:in `block (2 levels) in <top (required)>'
     # ./spec/support/vcr.rb:14:in `block (2 levels) in <top (required)>'

我还尝试使用外部 cookie 文件将 phantomjs_options block 传递给 poltergeist 驱动程序。这实际上似乎让我走得更远，但我最终得到了一个空 cookie_jar。您可以在下面看到此尝试:

--spec/spec_helper.rb

  Capybara.register_driver :poltergeist do |app|
    Capybara::Poltergeist::Driver.new(app, [phantomjs_options: [--cookies-file="#{::Rails.root}/spec/requests/cookies.txt"]] )
  end

  Capybara.javascript_driver = :poltergeist

--cookies.txt

phantom.addCookie({
    'name':     '_location',
    'value':    'US',
    'domain':   'localhost',
    'expires':  (new Date()).getTime() + 3600
});

测试响应
F

Failures:

  1) Associating Articles with Products and Product Categories supports js
     Failure/Error: visit new_user_session_path
     NoMethodError:
       undefined method `cookie_jar' for nil:NilClass
     # ./spec/requests/article_products_spec.rb:15:in `block (2 levels) in <top (required)>'
     # ./spec/support/vcr.rb:14:in `block (2 levels) in <top (required)>'

Finished in 2.42 seconds
1 example, 1 failure

Answer 1

我相信您为 Poltergeist 指定选项的尝试与 PhantomJS 的选项混淆了。您的注册 block 应如下所示:

Capybara.register_driver :poltergeist do |app|
  Capybara::Poltergeist::Driver.new(app, :phantomjs_options => ["--cookies-file=#{::Rails.root}/spec/requests/cookies.txt"])
end

希望有帮助。