JMeter (2) —— JMeter与WebDriver测试用户登陆以CAS SSO为例(101 Tutorial)

JMeter (2) —— JMeter与WebDriver测试用户登陆以CAS SSO为例(101 Tutorial)

主要内容

  • JMeter与WebDriver测试用户登陆以CAS SSO为例

环境与参考

jvm版本: 1.8.0_65

jmeter版本: 2.13

firefox版本: 39.0.3

参考来源:

jmeter官方网站

Leverage your Load Testing using JMeter and Selenium WebDriver

jmeter-plugins.org:FirefoxDriverConfig

jmeter-plugins.org:WebDriverTutorial

jmeter-plugins.org:WebDriverSampler

Using Selenium with JMeter's WebDriver Sampler

准备

请参照JMeter (1) —— JMeter与WebDriver安装与测试(101 Tutorial) 安装好JMeter。

需要注意的是:

  • JMeter的版本
  • jar依赖冲突
  • firefox版本

待测试的CAS环境

架构

JMeter (2) —— JMeter与WebDriver测试用户登陆以CAS SSO为例(101 Tutorial)_第1张图片

配置

请参照以下文章搭建配置好CAS单点登陆的本地环境。

  • CAS (1) —— Mac下配置CAS到Tomcat(服务端)

  • CAS (2) —— Mac下配置CAS到Tomcat(客户端)

  • CAS (6) —— Nginx代理模式下浏览器访问CAS服务器网络顺序图详解

  • CAS (7) —— Mac下配置CAS 4.x集群及JPATicketRegistry(服务端)

测试

注意:我们这里只是以CAS单点登陆为应用场景进行测试,此测试可以推广到其他的web应用的登陆场景,也可以扩展到更为丰富的流程或场景中。

准备

  1. 新建测试计划(TestPlan)

  2. 为测试计划添加线程组(TheadGroup)

  3. 依次添加

    • jp@gc - Firefox Driver Config (Thread Group -> Config Element)
    • jp@gc - WebDriver Sampler (Thread Group -> Sampler)
    • View Results Tree (Thread Group -> Listender)
    • View Results in Table (Thread Group -> Listender)

    JMeter (2) —— JMeter与WebDriver测试用户登陆以CAS SSO为例(101 Tutorial)_第2张图片

测试本地的CAS单点登陆环境

  1. 脚本

    try {
    
        var pkg = JavaImporter(org.openqa.selenium, org.openqa.selenium.support.ui)
        WDS.log.info('WDS Name:' + WDS.name)
        WDS.sampleResult.sampleStart()
    
        WDS.browser.navigate().to('https://app2.hoau.com:8423/cas2')
        WDS.log.info('Browser Title:' + WDS.browser.getTitle())
        WDS.log.info('Browser CurrentUrl:' + WDS.browser.getCurrentUrl())    
        WDS.log.info('Cookie:' + WDS.browser.manage().getCookies())   
        WDS.log.info('Request Header: ' + WDS.sampleResult.getRequestHeaders())
    
        var what = WDS.browser.findElement(pkg.By.id('username'))
        what.sendKeys(['test01'])
        var where = WDS.browser.findElement(pkg.By.id('password'))
        where.sendKeys(['psw01'])
    
    
        //   var button = WDS.browser.findElement(pkg.By.cssSelector('.btn-submit'))
        var button = WDS.browser.findElement(pkg.By.xpath("//input[@type='submit']"))
        button.click()
    
    
        var wait = new pkg.WebDriverWait(WDS.browser, 10)
        wait.until(pkg.ExpectedConditions.presenceOfElementLocated(pkg.By.xpath("//a[@title='Click here to log out']")))
        var results = WDS.browser.findElements(pkg.By.xpath("//a[@title='Click here to log out']"))
        WDS.log.info('Result: ' + results)
    
        if(results.empty) {
            WDS.sampleResult.successful = false
            WDS.sampleResult.responseMessage = 'There were no results returned'
        }
    
        var iter = results.iterator()
        var element = iter.next()
        WDS.log.info('User: ' + element.getText())
    
        if('test01' != element.getText()) {
            WDS.sampleResult.successful = false
            WDS.sampleResult.responseMessage = 'Login Failure'
        }
    
        WDS.sampleResult.sampleEnd()
    } catch(ex) {
        WDS.log.error(ex)
        WDS.sampleResult.successful = false
        WDS.sampleResult.responseMessage = 'There were no results returned'
        WDS.sampleResult.sampleEnd()
    }
  2. 运行

    • 查看“View Results in Table”

      JMeter (2) —— JMeter与WebDriver测试用户登陆以CAS SSO为例(101 Tutorial)_第3张图片

    • 查看“View Results Tree”

      JMeter (2) —— JMeter与WebDriver测试用户登陆以CAS SSO为例(101 Tutorial)_第4张图片

需要注意的是,诸如JMeter + WebDriver Plugin或Selenium Grid + Remote WebDriver抑或Sahi Web UI这些方式的测试,都是试图模拟用户从终端(浏览器)与服务器进行真实交互,以上这些方式长于流程、场景,而非服务端的压力(当然也可用于服务端压力测试之目的,这里强调的只是意图),如果要对服务端进行压力测试,我们可以有其他更为适合的方式。

测试cnblogs登陆

我们同样可以cnblogs为目标系统,尝试用JMeter来测试cnblogs的登陆。

  1. 脚本

    try {
    
        var pkg = JavaImporter(org.openqa.selenium, org.openqa.selenium.support.ui)
        WDS.log.info('WDS Name:' + WDS.name)
        WDS.sampleResult.sampleStart()
    
        WDS.browser.navigate().to('http://passport.cnblogs.com/user/signin')
        WDS.log.info('Browser Title:' + WDS.browser.getTitle())
        WDS.log.info('Browser CurrentUrl:' + WDS.browser.getCurrentUrl())    
        WDS.log.info('Cookie:' + WDS.browser.manage().getCookies())   
        WDS.log.info('Request Header: ' + WDS.sampleResult.getRequestHeaders())
    
        var what = WDS.browser.findElement(pkg.By.id('input1'))
        what.sendKeys(['weizhe_2008'])
        var where = WDS.browser.findElement(pkg.By.id('input2'))
        where.sendKeys(['********'])
        var button = WDS.browser.findElement(pkg.By.id('signin'))
        button.click()
    
        var wait = new pkg.WebDriverWait(WDS.browser, 1)
        // a href="http://home.cnblogs.com/u/richaaaard/"
        wait.until(pkg.ExpectedConditions.presenceOfElementLocated(pkg.By.xpath("//a[@href='http://www.cnblogs.com/richaaaard/']")))
        var results = WDS.browser.findElements(pkg.By.xpath("//a[@href='http://www.cnblogs.com/richaaaard/']"))
        WDS.log.info('Result: ' + results)
    
        if(results.empty) {
            WDS.sampleResult.successful = false
            WDS.sampleResult.responseMessage = 'There were no results returned'
        }
    
        WDS.sampleResult.sampleEnd()
    } catch(ex) {
        WDS.log.error(ex)
        WDS.sampleResult.successful = false
        WDS.sampleResult.responseMessage = 'There were no results returned'
        WDS.sampleResult.sampleEnd()
    }
  2. 运行

    JMeter (2) —— JMeter与WebDriver测试用户登陆以CAS SSO为例(101 Tutorial)_第5张图片

  3. 结果

    JMeter (2) —— JMeter与WebDriver测试用户登陆以CAS SSO为例(101 Tutorial)_第6张图片

问题

  • 由于此种测试模式下,我们会使用JMeter配置的Firefox Driver Config组件,同时使用WDS(Web Driver Sampler)Script在JMeter UI环境下测试目标应用,当Thread Group 的循环次数(Loop Count)或线程数(Number of Threads (user))的值大于1时,当前线程关联的浏览器代理实例一直处于生命期,而单点登陆会保留用户的登陆信息,无需反复输入用户名密码,浏览器保持了这些信息,因此后面断言会出现错误,脚本无法反复执行从而达到为“验证用户名密码这个流程”进行压力测试的目的。

    经研究,当前版本的JMeter及其使用的Selenium WebDriver Plugin除PhantomJS外,不支持动态修改Session Cookie,而网上多数文章介绍的相关Cookie的API,无法对浏览器Session Cookie进行操作。

    WDS.browser.manage().getCookies()
    WDS.browser.manage().deleteAllCookies()

    我们会使用HTTPs录制的方式来解决压力测试的问题。

扩展

为了解WDS 在JMeterUI下javascript脚本的能力,以及涉及到面问题相关的源码。

  • WDS (JMeterPlugins-WebDriver.jar)

    com.googlecode.jmeter.plugins.webdriver.sampler.WebDriverSampler
    com.googlecode.jmeter.plugins.webdriver.sampler.WebDriverScriptable

    package com.googlecode.jmeter.plugins.webdriver.sampler;
    
    import org.apache.jmeter.samplers.SampleResult;
    import org.apache.log.Logger;
    import org.openqa.selenium.WebDriver;
    
    public final class WebDriverScriptable
    {
      private static final String[] EMPTY_ARGS = new String[0];
      private String name;
      private String parameters;
      private Logger log;
      private WebDriver browser;
      private SampleResult sampleResult;
    
      public void setName(String name)
      {
        this.name = name;
      }
    
      public String getName() {
        return this.name;
      }
    
      public void setParameters(String parameters) {
        this.parameters = parameters;
      }
    
      public String getParameters() {
        return this.parameters;
      }
    
      public String[] getArgs() {
        return this.parameters != null ? this.parameters.trim().replaceAll("\\s+", " ").split(" ") : EMPTY_ARGS;
      }
    
      public void setLog(Logger log) {
        this.log = log;
      }
    
      public Logger getLog() {
        return this.log;
      }
    
      public void setBrowser(WebDriver browser) {
        this.browser = browser;
      }
    
      public WebDriver getBrowser() {
        return this.browser;
      }
    
      public void setSampleResult(SampleResult sampleResult) {
        this.sampleResult = sampleResult;
      }
    
      public SampleResult getSampleResult() {
        return this.sampleResult;
      }
    }       
  • WDS.browser (WebDriver - selenium-api-2.47.0.jar)

    org.openqa.selenium.WebDriver
    org.openqa.selenium.Cookie

    package org.openqa.selenium;

    import java.net.URL;
    import java.util.List;
    import java.util.Set;
    import java.util.concurrent.TimeUnit;
    import org.openqa.selenium.logging.Logs;

    public abstract interface WebDriver extends SearchContext
    {
    public abstract void get(String paramString);

    public abstract String getCurrentUrl();
    
    public abstract String getTitle();
    
    public abstract List<WebElement> findElements(By paramBy);
    
    public abstract WebElement findElement(By paramBy);
    
    public abstract String getPageSource();
    
    public abstract void close();
    
    public abstract void quit();
    
    public abstract Set<String> getWindowHandles();
    
    public abstract String getWindowHandle();
    
    public abstract TargetLocator switchTo();
    
    public abstract Navigation navigate();
    
    public abstract Options manage();
    
    @Beta
    public static abstract interface Window
    {
      public abstract void setSize(Dimension paramDimension);
    
      public abstract void setPosition(Point paramPoint);
    
      public abstract Dimension getSize();
    
      public abstract Point getPosition();
    
      public abstract void maximize();
    }
    
    public static abstract interface ImeHandler
    {
      public abstract List<String> getAvailableEngines();
    
      public abstract String getActiveEngine();
    
      public abstract boolean isActivated();
    
      public abstract void deactivate();
    
      public abstract void activateEngine(String paramString);
    }
    
    public static abstract interface Navigation
    {
      public abstract void back();
    
      public abstract void forward();
    
      public abstract void to(String paramString);
    
      public abstract void to(URL paramURL);
    
      public abstract void refresh();
    }
    
    public static abstract interface TargetLocator
    {
      public abstract WebDriver frame(int paramInt);
    
      public abstract WebDriver frame(String paramString);
    
      public abstract WebDriver frame(WebElement paramWebElement);
    
      public abstract WebDriver parentFrame();
    
      public abstract WebDriver window(String paramString);
    
      public abstract WebDriver defaultContent();
    
      public abstract WebElement activeElement();
    
      public abstract Alert alert();
    }
    
    public static abstract interface Timeouts
    {
      public abstract Timeouts implicitlyWait(long paramLong, TimeUnit paramTimeUnit);
    
      public abstract Timeouts setScriptTimeout(long paramLong, TimeUnit paramTimeUnit);
    
      public abstract Timeouts pageLoadTimeout(long paramLong, TimeUnit paramTimeUnit);
    }
    
    public static abstract interface Options
    {
      public abstract void addCookie(Cookie paramCookie);
    
      public abstract void deleteCookieNamed(String paramString);
    
      public abstract void deleteCookie(Cookie paramCookie);
    
      public abstract void deleteAllCookies();
    
      public abstract Set<Cookie> getCookies();
    
      public abstract Cookie getCookieNamed(String paramString);
    
      public abstract WebDriver.Timeouts timeouts();
    
      public abstract WebDriver.ImeHandler ime();
    
      @Beta
      public abstract WebDriver.Window window();
    
      @Beta
      public abstract Logs logs();
    }

    }

    以上要注意内部静态类 Options里面提供的,对Cookie进行操作的API

结束

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