在C9.io中安裝/使用Selenium for Nightwatch.js

Question

我正在嘗試使用Nightwatch.js來執行自動化單元和端到端測試。 Nightwatch.js取決於Selenium。

• 我已經確定瞭如何安裝它（請參閱「步驟來安裝硒」的），並且可以得到Selenium服務器啓動（通過bin/ java -jar selenium-server-standalone-2.48.2.jar）。
• 但是，當我嘗試實際運行基本夜間測試時，由於瀏覽器，網址和端口配置問題（以下錯誤），我收到錯誤。
• 有人可以提供一些提示我應該如何configure the nightwatch.json文件與Selenium安裝到C9中的一些提示？

---

步驟安裝硒

mkdir bin 
cd bin 
wget "http://selenium-release.storage.googleapis.com/2.48/selenium-server-standalone-2.48.2.jar" 
unzip selenium-server-standalone-2.48.2.jar 
cd .. 

LOG

03:26:27.875 INFO - Executing: [new session: Capabilities [{platform=ANY, acceptSslCerts=true, javascriptEnabled=true, browserName=firefox, name=Basic}]]) 
03:26:27.893 INFO - Creating a new session for Capabilities [{platform=ANY, acceptSslCerts=true, javascriptEnabled=true, browserName=firefox, name=Basic}] 
org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output: 

(process:3585): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed 
Error: no display specified 

     at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:122) 
     at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:271) 
     at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:117) 
     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:218) 
     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:211) 
     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:129) 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) 
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
     at java.lang.reflect.Constructor.newInstance(Constructor.java:526) 
     at org.openqa.selenium.remote.server.FirefoxDriverProvider.callConstructor(FirefoxDriverProvider.java:91) 
     at org.openqa.selenium.remote.server.FirefoxDriverProvider.newInstance(FirefoxDriverProvider.java:68) 
     at org.openqa.selenium.remote.server.DefaultDriverFactory.newInstance(DefaultDriverFactory.java:60) 
     at org.openqa.selenium.remote.server.DefaultSession$BrowserCreator.call(DefaultSession.java:222) 
     at org.openqa.selenium.remote.server.DefaultSession$BrowserCreator.call(DefaultSession.java:1) 
     at java.util.concurrent.FutureTask.run(FutureTask.java:262) 
     at org.openqa.selenium.remote.server.DefaultSession$1.run(DefaultSession.java:176) 
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
     at java.lang.Thread.run(Thread.java:745) 
03:27:13.875 WARN - Exception thrown 
java.util.concurrent.ExecutionException: org.openqa.selenium.WebDriverException: java.lang.reflect.InvocationTargetException 
Build info: version: '2.48.2', revision: '41bccdd', time: '2015-10-09 19:59:12' 
System info: host: 'metasean-learnin-nightwatch-2330511', ip: '172.17.33.167', os.name: 'Linux', os.arch: 'amd64', os.version: '4.2.0-c9', java.version: '1.7.0_85' 
Driver info: driver.version: unknown 
     at java.util.concurrent.FutureTask.report(FutureTask.java:122) 
     at java.util.concurrent.FutureTask.get(FutureTask.java:188) 
     at org.openqa.selenium.remote.server.DefaultSession.execute(DefaultSession.java:183) 
     at org.openqa.selenium.remote.server.DefaultSession.<init>(DefaultSession.java:119) 
     at org.openqa.selenium.remote.server.DefaultSession.createSession(DefaultSession.java:95) 
     at org.openqa.selenium.remote.server.DefaultDriverSessions.newSession(DefaultDriverSessions.java:124) 
     at org.openqa.selenium.remote.server.handler.NewSession.handle(NewSession.java:58) 
     at org.openqa.selenium.remote.server.handler.NewSession.handle(NewSession.java:1) 
     at org.openqa.selenium.remote.server.rest.ResultConfig.handle(ResultConfig.java:111) 
     at org.openqa.selenium.remote.server.JsonHttpCommandHandler.handleRequest(JsonHttpCommandHandler.java:175) 
     at org.openqa.selenium.remote.server.DriverServlet.handleRequest(DriverServlet.java:202) 
     at org.openqa.selenium.remote.server.DriverServlet.doPost(DriverServlet.java:164) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) 
     at org.openqa.selenium.remote.server.DriverServlet.service(DriverServlet.java:130) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 
     at org.openqa.jetty.jetty.servlet.ServletHolder.handle(ServletHolder.java:428) 
     at org.openqa.jetty.jetty.servlet.ServletHandler.dispatch(ServletHandler.java:680) 
     at org.openqa.jetty.jetty.servlet.ServletHandler.handle(ServletHandler.java:571) 
     at org.openqa.jetty.http.HttpContext.handle(HttpContext.java:1526) 
     at org.openqa.jetty.http.HttpContext.handle(HttpContext.java:1479) 
     at org.openqa.jetty.http.HttpServer.service(HttpServer.java:920) 
     at org.openqa.jetty.http.HttpConnection.service(HttpConnection.java:820) 
     at org.openqa.jetty.http.HttpConnection.handleNext(HttpConnection.java:986) 
     at org.openqa.jetty.http.HttpConnection.handle(HttpConnection.java:837) 
     at org.openqa.jetty.http.SocketListener.handleConnection(SocketListener.java:243) 
     at org.openqa.jetty.util.ThreadedServer.handle(ThreadedServer.java:358) 
     at org.openqa.jetty.util.ThreadPool$PoolThread.run(ThreadPool.java:537) 
Caused by: org.openqa.selenium.WebDriverException: java.lang.reflect.InvocationTargetException 
Build info: version: '2.48.2', revision: '41bccdd', time: '2015-10-09 19:59:12' 
System info: host: 'metasean-learnin-nightwatch-2330511', ip: '172.17.33.167', os.name: 'Linux', os.arch: 'amd64', os.version: '4.2.0-c9', java.version: '1.7.0_85' 
Driver info: driver.version: unknown 
     at org.openqa.selenium.remote.server.FirefoxDriverProvider.callConstructor(FirefoxDriverProvider.java:101) 
     at org.openqa.selenium.remote.server.FirefoxDriverProvider.newInstance(FirefoxDriverProvider.java:68) 
     at org.openqa.selenium.remote.server.DefaultDriverFactory.newInstance(DefaultDriverFactory.java:60) 
     at org.openqa.selenium.remote.server.DefaultSession$BrowserCreator.call(DefaultSession.java:222) 
     at org.openqa.selenium.remote.server.DefaultSession$BrowserCreator.call(DefaultSession.java:1) 
     at java.util.concurrent.FutureTask.run(FutureTask.java:262) 
     at org.openqa.selenium.remote.server.DefaultSession$1.run(DefaultSession.java:176) 
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
     at java.lang.Thread.run(Thread.java:745) 
Caused by: java.lang.reflect.InvocationTargetException 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) 
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
     at java.lang.reflect.Constructor.newInstance(Constructor.java:526) 
     at org.openqa.selenium.remote.server.FirefoxDriverProvider.callConstructor(FirefoxDriverProvider.java:91) 
     ... 9 more 
Caused by: org.openqa.selenium.WebDriverException: Failed to connect to binary FirefoxBinary(/usr/bin/firefox) on port 7055; process output follows: 

(process:3585): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed 
Error: no display specified 

Build info: version: '2.48.2', revision: '41bccdd', time: '2015-10-09 19:59:12' 
System info: host: 'metasean-learnin-nightwatch-2330511', ip: '172.17.33.167', os.name: 'Linux', os.arch: 'amd64', os.version: '4.2.0-c9', java.version: '1.7.0_85' 
Driver info: driver.version: FirefoxDriver 
     at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:134) 
     at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:271) 
     at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:117) 
     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:218) 
     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:211) 
     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:129) 
     ... 14 more 
Caused by: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output: 

(process:3585): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed 
Error: no display specified 

     at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:122) 
     ... 19 more 
03:27:13.884 WARN - Exception: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output: 

(process:3585): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed 
Error: no display specified 

Answer 1

對於其他人在這種情況下，有一些好消息和一些壞消息。

好消息...

1. 在C9工作區的頂部，單擊 「預覽」，然後選擇 「預覽運行的應用程序。」這將打開一個新的C9選項卡。
2. 複製新的C9標籤的地址欄AFTER「https：//」（例如<project-name>-<username>.c9users.io）的部分。
3. 在C9終端中，運行ping <project-name>-<username>.c9users.io（用您的信息替換<project-name>-<username>.c9users.io）。這將返回一個實際的IP地址。
4. 在nightwatch.json文件，設置「launch_url」返回的IP地址
5. 現在可以運行nightwatch的價值。 :-)

壞消息... - 我們試圖對browser.url然後browser.end並在這兩種情況下運行測試所涉及的前兩個測試，出現nightwatch的browser對象已被修改的地方。我們不確定在哪裏，爲什麼或如何修復它，但沒有它，能夠運行nightwatch不會對我們有很大幫助。 :-(