Net :: ReadTimeout：Net :: ReadTimeout和Selenium :: WebDriver :: Error :: UnknownError：未知錯誤：Chrome無法在Rails 5.1.beta上啓動系統測試

熱衷於將Capybara烘焙成新版本的Rails （5.1）cf http://weblog.rubyonrails.org/2017/2/23/Rails-5-1-beta1/Net :: ReadTimeout：Net :: ReadTimeout和Selenium :: WebDriver :: Error :: UnknownError：未知錯誤：Chrome無法在Rails 5.1.beta上啓動系統測試

雖然我遇到了問題。這是我的步驟。任何線索的歡迎。

全新安裝的：

Linux的Ubuntu桌面16.10（VM在Hyper-V），具有安裝Chrome，並且罰款運行;
Ruby 2.4;
Rails 5.1.beta。

1.-創建一個簡單的應用程序：

~$ ruby -v 
    ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux] 
    ~$ rails -v 
    Rails 5.1.0.beta1 
    ~$ mkdir railsapps 
    ~$ cd railsapps 
    ~/railsapps$ rails new smoketestapp 
    ~/railsapps$ cd smoketestapp 
    ~/railsapps/smoketestapp$ rails generate scaffold post title:string body:text 
    ~/railsapps/smoketestapp$ rails db:migrate

2：運行測試

~/railsapps/smoketestapp$ cat test/system/posts_test.rb 
    require "application_system_test_case" 

    class PostsTest < ApplicationSystemTestCase 
     test "visiting the index" do 
     visit posts_url 

     assert_selector "h1", text: "Post" 
     end 
    end 

    ~/railsapps/smoketestapp$ rake test TEST=test/system/posts_test.rb 
    Run options: --seed 55778 

    # Running: 
    ... 
    Error: 
    PostsTest#test_visiting_the_index: 
    Selenium::WebDriver::Error::WebDriverError: Unable to find chromedriver. Please download the server from http://chromedriver.storage.googleapis.com/index.html and place it somewhere on your PATH. More info at https://github.com/SeleniumHQ/selenium/wiki/ChromeDriver. 
    ... 
    1 runs, 0 assertions, 0 failures, 1 errors, 0 skips 
    ~/railsapps/smoketestapp$

3.- OK，讓我們繼續在錯誤訊息建議（安裝chromedriver ）：

 ~/railsapps/smoketestapp$ ls /usr/bin/google-chrome 
    lrwxrwxrwx 1 root root 31 Mar 18 15:31 /usr/bin/google-chrome -> /etc/alternatives/google-chrome* 
    ~/railsapps/smoketestapp$ echo $PATH 
    ...:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:... 
    ~/railsapps/smoketestapp$ wget https://chromedriver.storage.googleapis.com/2.28/chromedriver_linux64.zip 
    ~/railsapps/smoketestapp$ unzip chromedriver_linux64.zip 
    ~/railsapps/smoketestapp$ sudo cp chromedriver /usr/local/bin 
    ~/railsapps/smoketestapp$ ls /usr/local/bin 
    total 7504 
    drwxr-xr-x 2 root root 4096 Mar 19 19:05 ./ 
    drwxr-xr-x 10 root root 4096 Okt 12 22:42 ../ 
    -rwxr-xr-x 1 root root 7673176 Mar 19 19:05 chromedriver* 
    ~/railsapps/smoketestapp$

4.-確定。重試測試...

 ~/railsapps/smoketestapp$ rake test TEST=test/system/posts_test.rb 
    Run options: --seed 51574 

    # Running: 
    ... 
    Error: 
    PostsTest#test_visiting_the_index: 
    Net::ReadTimeout: Net::ReadTimeout test/system/posts _test.rb:5:in `block in ' 
    ... 
    bin/rails test test/system/posts_test.rb:4 
    ... 
    1 runs, 0 assertions, 0 failures, 1 errors, 0 skips 
    ~/railsapps/smoketestapp$

不好！

上的根源甲線索「網:: ReadTimeout：淨:: ReadTimeout」在該應用運行目錄時rails -v，給硒::的webdriver ::錯誤::不明錯誤給出錯誤消息：未知錯誤：瀏覽器無法啓動：

~/railsapps/smoketestapp$ rails -v 
    Run options: --seed 39896 
    # Running: 
    .......E 
    Error: 
    PostsTest#test_visiting_the_index: 
    Selenium::WebDriver::Error::UnknownError: unknown error: Chrome failed to start: exited abnormally 
     (Driver info: chromedriver=2.28.455506 (18f6627e265f442aeec9b6661a49fe819aeeea1f),platform=Linux 4.8.0-41-generic x86_64) 
     test/system/posts_test.rb:5:in `block in <class:PostsTest>' 
    Error: 
    PostsTest#test_visiting_the_index: 
    Net::ReadTimeout: Net::ReadTimeout 

    bin/rails test test/system/posts_test.rb:4 
    ... 
    ~/railsapps/smoketestapp$

這是我獲得直接從紅寶石調用硒的webdriver時：

~/railsapps/smoketestapp$ irb 
    2.4.0 :001 > require "selenium-webdriver" 
    => true 
    2.4.0 :002 > driver = Selenium::WebDriver.for(:chrome) 
    Net::ReadTimeout: Net::ReadTimeout 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/protocol.rb:176:in `rbuf_fill' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/protocol.rb:154:in `readuntil' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/protocol.rb:164:in `readline' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/http/response.rb:40:in `read_status_line' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/http/response.rb:29:in `read_new' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/http.rb:1446:in `block in transport_request' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/http.rb:1443:in `catch' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/http.rb:1443:in `transport_request' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/http.rb:1416:in `request' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/http.rb:1409:in `block in request' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/http.rb:877:in `start' 
    from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/2.4.0/net/http.rb:1407:in `request' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/http/default.rb:124:in `response_for' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/http/default.rb:78:in `request' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/http/common.rb:61:in `call' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/bridge.rb:669:in `raw_execute' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/bridge.rb:108:in `create_session' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/bridge.rb:71:in `initialize' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/chrome/bridge.rb:52:in `initialize' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/common/driver.rb:61:in `new' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/common/driver.rb:61:in `for' 
    from ~/.rvm/gems/ruby-2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver.rb:87:in `for' 
    from (irb):2 
    from ~/.rvm/rubies/ruby-2.4.0/bin/irb:11:in `<main>' 
    2.4.0 :003 > exit 
    ~/railsapps/smoketestapp$

任何幫助apprec iated，謝謝，你

內翻

更新：

發現問題，尋找到了硒驅動程序的日誌文件。要做到這一點，我輸入了IRB如下：

require "selenium-webdriver" 
    Selenium::WebDriver::Chrome.driver_path="/usr/local/bin/chromedriver" 
    Selenium::WebDriver.for :chrome, :service_log_path => "/tmp/cd.log" 
    driver = Selenium::WebDriver.for(:chrome)

尾礦日誌文件釘它：鉻會無法啓動：

~/railsapps/smoketestapp$ tail /tmp/cd.log 
     ... 
    [0.247][INFO]: Launching chrome: /opt/google/chrome/google-chrome --disable-background-networking --disable-client-side-phishing-detection --disable-component-update --disable-default-apps --disable-hang-monitor --disable-prompt-on-repost --disable-web-resources --enable-logging --full-memory-crash-report --ignore-certificate-errors --load-extension=/tmp/.org.chromium.Chromium.Pdre6o/internal --logging-level=1 --metrics-recording-only --no-first-run --password-store=basic --remote-debugging-port=12264 --safebrowsing-disable-auto-update --safebrowsing-disable-download-protection --use-mock-keychain --user-data-dir=/tmp/.org.chromium.Chromium.mHJaEd data:, 
    [0.250][WARNING]: PAC support disabled because there is no system implementation 
    [20.281][INFO]: RESPONSE InitSession unknown error: Chrome failed to start: exited abnormally 
    ~/railsapps/smoketestapp$

最後，我發現調用鉻遠程通過PuTTY沒有工作（這就是我一直在做的），儘管直接在虛擬機（在終端服務器）上做同樣的工作。

在膩子：

~$ google-chrome 
    [3938:3938:0320/213941.129923:ERROR:browser_main_loop.cc(279)] Gtk: cannot open display:

然而，直接在虛擬機上，它的工作。

不幸的是，我的幸福是短暫的，因爲我遇到了另一個錯誤，但這是另一個故事：

  irb(main):001:0> require "selenium-webdriver" 
    => true 
    irb(main):002:0> Selenium::WebDriver::Chrome.driver_path="/usr/local/bin/chromedriver" 
    => "/usr/local/bin/chromedriver" 
    irb(main):003:0> driver = Selenium::WebDriver.for(:chrome) 
    => #<Selenium::WebDriver::Driver:0x59d7c889a916c6b8 browser=:chrome> 
    irb(main):004:0> driver.navigate.to("http://www.google.com") 
    Selenium::WebDriver::Error::UnknownError: unknown error: Runtime.executionContextCreated has invalid 'context': {"auxData":{"frameId":"10797.1","isDefault":true},"id":1,"name":"","origin":"://"} 
     (Session info: chrome=57.0.2987.110) 
     (Driver info: chromedriver=2.4.226074,platform=Linux 4.8.0-41-generic x86_64) 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/response.rb:69:in `assert_ok' 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/response.rb:32:in `initialize' 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/http/common.rb:83:in `new' 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/http/common.rb:83:in `create_response' 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/http/default.rb:107:in `request' 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/http/common.rb:61:in `call' 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/bridge.rb:669:in `raw_execute' 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/bridge.rb:647:in `execute' 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/remote/bridge.rb:120:in `get' 
      from ~/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/selenium-webdriver-3.3.0/lib/selenium/webdriver/common/navigation.rb:32:in `to' 
      from (irb):4 
      from ~/.rvm/rubies/ruby-2.4.0/bin/irb:11:in `<main>' 
    irb(main):005:0> exit

來源

2017-03-19 Varus Septimus

什麼版本的Chrome，你已經安裝了？ –

嗨托馬斯，這是它： 'Google Chrome 57.0.2987.110' –

最終，我想跑與水豚的系統測試，將在我的設置工作（開發機器= OS = Linux Ubuntu的VM，通過PuTTY遠程訪問）。

我找到了一種使它工作的方法。爲此，我拋棄了Chrome及其Selenium驅動程序，用於PhantomJS和poltergeist。

PhantomJS是一個無頭瀏覽器（=無GUI）。它效果很好。下面是我的步驟（的鋼軌5.1）：

添加寶石「騷靈」到您的Gemfile，並註釋掉寶石「硒的webdriver」（後來由Chrome瀏覽器，我們將不會使用需要）：
```
#gem 'selenium-webdriver' 
gem 'poltergeist' 
```
運行bundle update

添加騷靈驅動程序的配置（在文件application_system_test_case.rb），註釋掉鉻驅動設置：

$ cat test/application_system_test_case.rb 

require "test_helper" 

require "capybara/poltergeist" 
Capybara.javascript_driver = :poltergeist  

class ApplicationSystemTestCase < ActionDispatch::SystemTestCase 
    # driven_by :selenium, using: :chrome, screen_size: [1400, 1400] 
    driven_by :poltergeist 
end

下載「PhamtomJS」無頭的瀏覽器，並將其放置在您的路徑中的目錄：

$ wget https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-1.9.8-linux-x86_64.tar.bz2 
$ tar -xjvf phantomjs-1.9.8-linux-x86_64.tar.bz2 
$ sudo cp phantomjs-1.9.8-linux-x86_64/bin/phantomjs /usr/local/bin 
$ sudo chmod +x /usr/local/bin/phantomjs

你所有的設置，並準備運行一個系統測試。例如：

$ rake test TEST=test/system/posts_test.rb 
Run options: --seed 38196 

# Running: 

Puma starting in single mode... 
* Version 3.8.2 (ruby 2.4.0-p0), codename: Sassy Salamander 
* Min threads: 0, max threads: 1 
* Environment: test 
* Listening on tcp://0.0.0.0:44265 
Use Ctrl-C to stop 
You're running an old version of PhantomJS, update to >= 2.1.1 for a better experience. 
. 

Finished in 1.366478s, 0.7318 runs/s, 0.7318 assertions/s. 

1 runs, 1 assertions, 0 failures, 0 errors, 0 skips 
$

來源

2017-03-26 18:45:07

Net :: ReadTimeout：Net :: ReadTimeout和Selenium :: WebDriver :: Error :: UnknownError：未知錯誤：Chrome無法在Rails 5.1.beta上啓動系統測試

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