Selenium Grid:使用Remotewebdriver使用自定义浏览器位置

Question

我正在使用硒网格在远程计算机上运行一些测试。这就是我启动集线器的方式

java -jar /usr/local/lib/selenium-server-standalone-3.141.0.jar -role hub

这就是我在远程计算机上启动节点的方式

java -Dwebdriver.gecko.driver="/opt/foxdriver" -jar "$HOME/selenium-server-standalone-3.141.0.jar" -role webdriver -hub "http://192.168.100.99:4444/grid/register/" -port 9999

这是在远程计算机上启动浏览器的类：

package seleniumgrid;
import static java.lang.Thread.sleep;
import java.net.MalformedURLException;
import java.net.URL;
import org.openqa.selenium.Platform;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
public class Seleniumgrid {
WebDriver driver;
String baseURL, nodeURL;
public static void main(String[] args)
        throws MalformedURLException, InterruptedException {
    Seleniumgrid grid = new Seleniumgrid();
    grid.doit();
}
void doit() throws MalformedURLException, InterruptedException {
    String nodeURL = "http://192.168.100.100:9999/wd/hub";
    DesiredCapabilities caps = DesiredCapabilities.firefox();
    caps.setBrowserName("firefox");
    caps.setPlatform(Platform.LINUX);
    driver = new RemoteWebDriver(new URL(nodeURL), caps);
    sleep(60000L);
    driver.quit();
}

上面的代码启动了在远程节点上安装的Firefox浏览器(Machine B(。但是，我想启动"/opt/firefox/firefox"中的不同版本的firefox。我尝试了

caps.setBrowserName("/opt/firefox/firefox");

，但这只是引发以下例外：

INFO: Using `new FirefoxOptions()` is preferred to `DesiredCapabilities.firefox()`
Exception in thread "main" org.openqa.selenium.SessionNotCreatedException: Unable to create session from {
  "desiredCapabilities": {
    "browserName": "u002foptu002fautobrowseu002ffirefoxu002ffoxu002ffirefox",
    "version": "",
    "platform": "LINUX",
    "acceptInsecureCerts": true
  },
  "capabilities": {
    "firstMatch": [
      {
        "acceptInsecureCerts": true,
        "browserName": "u002foptu002fautobrowseu002ffirefoxu002ffoxu002ffirefox",
        "platformName": "linux"
      }
    ]
  }
}
Build info: version: '3.141.0', revision: '2ecb7d9a', time: '2018-10-31T20:22:52'
System info: host: 'machineB', ip: '192.168.100.100', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.172', java.version: '1.8.0_192'
Driver info: driver.version: unknown
Command duration or timeout: 202 milliseconds
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
        at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:166)
        at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$errorHandler$0(JsonWireProtocolResponse.java:54)
        at org.openqa.selenium.remote.HandshakeResponse.lambda$getResponseFunction$0(HandshakeResponse.java:30)
        at org.openqa.selenium.remote.ProtocolHandshake.lambda$createSession$0(ProtocolHandshake.java:123)
        at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
        at java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958)
        at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126)
        at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:498)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
        at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464)
        at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:125)
        at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:74)
        at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:136)
        at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
        at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:213)
        at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:131)
        at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:144)
        at seleniumgrid.Seleniumgrid.doit(Seleniumgrid.java:29)
        at seleniumgrid.Seleniumgrid.main(Seleniumgrid.java:18)
 Caused by: org.openqa.selenium.SessionNotCreatedException: Unable to create session from {
  "desiredCapabilities": {
    "browserName": "u002foptu002fautobrowseu002ffirefoxu002ffoxu002ffirefox",
    "version": "",
    "platform": "LINUX",
    "acceptInsecureCerts": true
  },
  "capabilities": {
    "firstMatch": [
      {
        "acceptInsecureCerts": true,
        "browserName": "u002foptu002fautobrowseu002ffirefoxu002ffoxu002ffirefox",
        "platformName": "linux"
      }
    ]
  }
}

是否有一种方法可以在/opt/firefox/firefox中使用浏览器，而不是使用RemoteWebDriver？

Answer 1

选项A：提供版本二进制的路径

FirefoxBinary binary = new FirefoxBinary(new File("path_to_bin"));
FirefoxProfile profile = new FirefoxProfile();
WebDriver driver = new FirefoxDriver(binary, profile);

选项b

System.setProperty("webdriver.gecko.driver","path of geckodriver.exe");
 WebDriver driver = new FirefoxDriver();

选项C：将firefox.exe版本的路径分配到webdriver.firefox.bin属性

System.setProperty("webdriver.firefox.bin", "c:\path\to\firefox.exe");

也让我分享单个(本地计算机(的网格配置： HUB

java -jar selenium-server-standalone-3.11.0.jar -role hub -hubConfig hub.json & pause

node1：

java -jar -Dwebdriver.gecko.driver=geckodriver.exe -Dwebdriver.chrome.driver=chromedriver.exe selenium-server-standalone-3.11.0.jar -role node -nodeConfig node1.json & pause

node2：

java -jar -Dwebdriver.gecko.driver=geckodriver.exe -Dwebdriver.chrome.driver=chromedriver.exe selenium-server-standalone-3.11.0.jar -role node -nodeConfig node2.json & pause

请让我知道您是否需要.json config在这里(我也可以提供它们(。

除非范围 - 网络和移动测试自动化驱动程序之间的差异

希望这会有所帮助。

Answer 2

您的目标是拥有一个多版本的硒网格。每个节点均设计用于使用单个浏览器可执行路径，即OS的默认值或手动指定为Java param。

您可以在远程计算机中启动多个节点，然后将它们连接到同一集线器。每个节点可以运行不同的浏览器可执行文件。我还建议为每个节点使用Docker容器，以避免浏览器在幕后进行的任何缓存问题或至少对每个执行类型使用自定义浏览器配置文件。