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:

准备

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

配置

请参照以下文章搭建配置好CAS单点登陆的本地环境。

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

新建测试计划(TestPlan)

为测试计划添加线程组(TheadGroup)

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)

测试本地的CAS单点登陆环境

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()

}

运行

查看“View Results in Table”

查看“View Results Tree”

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。

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()

}

运行

结果

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 findElements(By paramBy);

public abstract WebElement findElement(By paramBy);

public abstract String getPageSource();

public abstract void close();

public abstract void quit();

public abstract Set 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 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 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