Xvfb versteckt Browser auf Macos nicht

Question

Ich muss Selentests ohne Browser ausführen. Auf Ubuntu funktioniert es perfekt, wie ich es erwarte. Aber unter Mac OS (Version 10.11): Xvfb versteckt den Browser nicht.

Ich beginne Xvfb in einem Terminal:

$ sudo Xvfb :1338 
Password: 
Initializing built-in extension Generic Event Extension 
Initializing built-in extension SHAPE 
Initializing built-in extension MIT-SHM 
Initializing built-in extension XInputExtension 
Initializing built-in extension XTEST 
Initializing built-in extension BIG-REQUESTS 
Initializing built-in extension SYNC 
Initializing built-in extension XKEYBOARD 
Initializing built-in extension XC-MISC 
Initializing built-in extension XINERAMA 
Initializing built-in extension XFIXES 
Initializing built-in extension RENDER 
Initializing built-in extension RANDR 
Initializing built-in extension COMPOSITE 
Initializing built-in extension DAMAGE 
Initializing built-in extension MIT-SCREEN-SAVER 
Initializing built-in extension DOUBLE-BUFFER 
Initializing built-in extension RECORD 
Initializing built-in extension DPMS 
Initializing built-in extension Present 
Initializing built-in extension X-Resource 
Initializing built-in extension XVideo 
Initializing built-in extension XVideo-MotionCompensation 
[dix] Could not init font path element /System/Library/Fonts, removing from list! 

Im zweiten Terminal I Selen Standalone-Server (mit chromedriver in Arbeitsverzeichnis) mit DISPLAY env var laufen:

$ DISPLAY=:1338 /Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/bin/java -jar ~/selenium-server-standalone-3.4.0.jar 
19:27:25.021 INFO - Selenium build info: version: '3.4.0', revision: 'unknown' 
19:27:25.022 INFO - Launching a standalone Selenium Server 
2017-05-26 19:27:25.056:INFO::main: Logging initialized @311ms to org.seleniumhq.jetty9.util.log.StdErrLog 
19:27:25.165 INFO - Driver provider org.openqa.selenium.ie.InternetExplorerDriver registration is skipped: 
registration capabilities Capabilities [{ensureCleanSession=true, browserName=internet explorer, version=, platform=WINDOWS}] does not match the current platform MAC 
19:27:25.166 INFO - Driver provider org.openqa.selenium.edge.EdgeDriver registration is skipped: 
registration capabilities Capabilities [{browserName=MicrosoftEdge, version=, platform=WINDOWS}] does not match the current platform MAC 
19:27:25.166 INFO - Driver class not found: com.opera.core.systems.OperaDriver 
19:27:25.166 INFO - Driver provider com.opera.core.systems.OperaDriver registration is skipped: 
Unable to create new instances on this machine. 
19:27:25.166 INFO - Driver class not found: com.opera.core.systems.OperaDriver 
19:27:25.167 INFO - Driver provider com.opera.core.systems.OperaDriver is not registered 
2017-05-26 19:27:25.247:INFO:osjs.Server:main: jetty-9.4.3.v20170317 
2017-05-26 19:27:25.304:INFO:osjsh.ContextHandler:main: Started o.s.j.s.ServletContextHandler@68be2bc2{/,null,AVAILABLE} 
2017-05-26 19:27:25.343:INFO:osjs.AbstractConnector:main: Started ServerConnector@42d80b78{HTTP/1.1,[http/1.1]}{0.0.0.0:4444} 
2017-05-26 19:27:25.344:INFO:osjs.Server:main: Started @600ms 
19:27:25.344 INFO - Selenium Server is up and running 

Dann im dritten Terminal, ich laufe Selenium Test:

Mit Inhalt:

// Run some code on play.golang.org and display the result 
package main 

import (
    "fmt" 
    "time" 

    "github.com/tebeka/selenium" 
) 

var code = ` 
package main 
import "fmt" 

func main() { 
    fmt.Println("Hello WebDriver!\n") 
} 
` 

// Errors are ignored for brevity. 

func main() { 
    // FireFox driver without specific version 
    // *** Add gecko driver here if necessary (see notes above.) *** 
    caps := selenium.Capabilities{ 
     "browserName": "chrome", 
    } 
    wd, err := selenium.NewRemote(caps, "") 
    if err != nil { 
     panic(err) 
     return 
    } 
    defer wd.Quit() 

    // Get simple playground interface 
    wd.Get("http://play.golang.org/?simple=1") 

    // Enter code in textarea 
    elem, _ := wd.FindElement(selenium.ByCSSSelector, "#code") 
    elem.Clear() 
    elem.SendKeys(code) 

    // Click the run button 
    btn, _ := wd.FindElement(selenium.ByCSSSelector, "#run") 
    btn.Click() 

    // Get the result 
    div, _ := wd.FindElement(selenium.ByCSSSelector, "#output") 

    output := "" 
    // Wait for run to finish 
    for { 
     output, _ = div.Text() 
     if output != "Waiting for remote server..." { 
      break 
     } 
     time.Sleep(time.Millisecond * 100) 
    } 

    fmt.Printf("Got: %s\n", output) 
} 

Und haben Ausgang:

Got: Hello WebDriver! 


Program exited. 

Ich erwarte, dass der Browser funktioniert nicht sehen. Aber ich sehe den Browser. Reading this und this hat mir nicht geholfen.

Answer 1

Sie verwenden wahrscheinlich keine X11-basierte Version eines Webbrowsers. Die nativen Browser unter OSX verwenden X11 nicht und verwenden daher nicht $DISPLAY und können nicht innerhalb von xvfb ausgeführt werden.