selenium Grid(一)

时间:2022-09-06 09:21:20

selenium grid Quick Start

selenium-grid是用于设计帮助我们进行分布式测试的工具,其整个结构是由一个hub节点和若干个代理节点组成。hub用来管理各个代理节点的注册和状态信息,并且接受远程客户端代码的请求调用,然后把请求的命令再转发给代理节点来执行。

1、启动Selenium-Server

1)下载 selenium-server-standalone-*.jar,地址:http://selenium-release.storage.googleapis.com/index.html?path=2.41/

2)启动selenium server并注册hub  (假设hub服务器机器selenium-server版本为2.41,本机IP为192.32.50.26)

到selenium-server-standalone-*.jar 包放置目录下执行:java -jar selenium-server-standalone-2.41.0.jar -role hub -port 4441  (未指定port时,hub默认4444)

3)本地或者远程机器, 都可以启动多个node

a.本地启动:

默认: java -jar selenium-server-standalone-2.41.0.jar -role node            (默认的注册地址:http://localhost:4444/grid/register,node默认端口:5555)

指定hub: java -jar selenium-server-standalone-2.41.0.jar -role node  -hub http://localhost:4441/grid/register

b.远程启动:

远程同样需要下载selenium-Server jar包,启动如下:  (假设远程版本为2.29)

java -jar selenium-server-standalone-2.29.0.jar -role node -hub http://192.32.50.26:4441/grid/register -Dwebdriver.chrome.driver=chromedriver29.exe  -browser browserName=chrome  -port 6666

2、具体应用

public class RemoteWebDriverDesiredCapTest {
@Test
public void myTest() throws MalformedURLException{
/**
* 1、本地机器启动了主节点hub (假設本台机器IP:192.32.50.26,http://localhost:4444/grid/console 查看节点连接情况)
* java -jar selenium-server-standalone-2.41.0.jar -role hub (默认端口4444)
* 2、本地也启动了一个该hub 次节点A
* java -jar selenium-server-standalone-2.41.0.jar -role node
* (默认的注册地址:http://localhost:4444/grid/register,node默认端口:5555)
* (具体设置:java -jar selenium-server-standalone-2.41.0.jar -role node -port 5556 -hub http://localhost:4441/grid/register)
* 3、本机器装有firefox, chrome,所以通过该次节点A, 可以用firefox来运行脚本, 也可以用chrome
* FF驱动默认在webDriver中了, 而chrome驱动需要自己指定, chromeDriver.exe ,运行chromeDriver(默认使用端口9515)
*/

//node:java -jar selenium-server-standalone-2.41.0.jar -role node
DesiredCapabilities capability = DesiredCapabilities.firefox();
capability.setPlatform(Platform.VISTA);
WebDriver driver = new RemoteWebDriver(new URL("http://192.32.50.26:5555/wd/hub"), capability);
driver.get("http://www.baidu.com");
System.out.println(driver.getCurrentUrl());
driver.quit(); // node: 直接运行chromedriver.exe时, 通过http://xxx.xxx.xxx.xxx:9515 就可以取得chrome; 或者像 下面指定-Dwebdriver.chrome.driver -port,形式
DesiredCapabilities aDesiredcap =new DesiredCapabilities("chrome","",Platform.VISTA);
WebDriver wd = new RemoteWebDriver(new URL("http://localhost:9515"), aDesiredcap);
wd.get("https://code.google.com/p/selenium/wiki/Grid2");
System.out.println(wd.getCurrentUrl());
wd.quit(); //node:java -jar selenium-server-standalone-2.41.0.jar -role node -hub http://192.32.50.26:4444/grid/register -Dwebdriver.ie.driver=IEDriverServer.exe -browser browserName=iexplore -port 7776
DesiredCapabilities iDesiredcap =new DesiredCapabilities("iexplore","",Platform.VISTA);
WebDriver wdE = new RemoteWebDriver(new URL("http://192.32.50.26:7776/wd/hub"), iDesiredcap);
wdE.get("https://code.google.com/p/selenium/wiki/Grid2");
System.out.println(wdE.getCurrentUrl());
wdE.quit(); //用另一台机器作为次节点连接 , (假設IP為: 192.32.52.51 )
//java -jar selenium-server-standalone-2.29.0.jar -role node -hub http://192.32.50.26:4444/grid/register -Dwebdriver.chrome.driver=chromedriver29.exe -browser browserName=chrome -port 6666
DesiredCapabilities chrome =new DesiredCapabilities("chrome","",Platform.XP);
WebDriver driverChrome = new RemoteWebDriver(new URL("http://192.32.52.51:6666/wd/hub"), chrome);
driverChrome.get("http://www.cnblogs.com/");
driverChrome.quit();
}
}

3、做成多线程方式

Selenium Grid只是提供多系统、多浏览器的执行环境,而不是说任务一个test case丢给它就能并行运行。并行的运行我这里就交给testng了

如下代码和配置:

1)testcase 代码:

package com.jennifer.test;

import java.net.MalformedURLException;
import java.net.URL;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Parameters;
import org.testng.annotations.Test; public class GridParallelTests {
private WebDriver dr;
DesiredCapabilities desireCap; @Parameters({ "browser", "nodeUrl"})
@BeforeMethod
public void setUp(String browser, String nodeUrl) {
if (browser.equals("ie")){
desireCap = DesiredCapabilities.internetExplorer();
}
else if (browser.equals("ff"))
desireCap = DesiredCapabilities.firefox();
else if (browser.equals("chrome"))
desireCap = DesiredCapabilities.chrome();
else
System.out.println("browser parameter wrong , can only be :ie、 ff、chrome"); String url = nodeUrl + "/wd/hub";
URL urlInstance = null;
try {
urlInstance = new URL(url);
} catch (MalformedURLException e) {
e.printStackTrace();
}
dr = new RemoteWebDriver(urlInstance, desireCap);
} @Test
public void test() {
dr.get("http://www.baidu.com/");
dr.findElement(By.id("kw1")).sendKeys("selenium");
dr.findElement(By.id("su1")).click();
System.out.println("title:" + dr.getTitle());
}
@AfterMethod
public void quit() {
dr.close();
}
}

2)testng.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd"> <suite name="Suite1" parallel="tests" thread-count="5">
<test name="test1">
<parameter name="browser" value="ff" />
<parameter name="nodeUrl" value="http://192.32.50.26:5555"/>
<classes>
<class name="com.jennifer.test.GridParallelTests"></class>
</classes>
</test> <test name="test2">
<!-- java -jar selenium-server-standalone-2.41.0.jar -role node -hub http://192.32.50.26:4444/grid/register -Dwebdriver.chrome.driver=chromedriver29.exe -browser browserName=chrome -port 6666 -->
<parameter name="browser" value="chrome" />
<parameter name="nodeUrl" value="http://192.32.50.26:6666" />
<classes>
<class name="com.jennifer.test.GridParallelTests"></class>
</classes>
</test> <test name="test3">
<!-- java -jar selenium-server-standalone-2.41.0.jar -role node -hub http://192.32.50.26:4444/grid/register -Dwebdriver.ie.driver=IEDriverServer.exe -browser browserName=iexplore -port 7776 -->
<parameter name="browser" value="ie" />
<parameter name="nodeUrl" value="http://192.32.50.26:7776" />
<classes>
<class name="com.jennifer.test.GridParallelTests"></class>
</classes>
</test>
</suite>