JSR223采样器的WDS.sampleResult.sampleStart（）

Question

我正在使用JSR223采样器，我想在URL加载后开始计算时间，因此我的代码如下：

**

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.firefox.FirefoxOptions;
import org.openqa.selenium.By;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
System.setProperty("webdriver.gecko.driver","/Users/geckodriver");
FirefoxOptions options = new FirefoxOptions().setAcceptInsecureCerts(true);
options.addArguments("--headless");
WebDriver driver = new FirefoxDriver(options);
def wait = new WebDriverWait(driver, 20);
driver.get('https://google.com/');
WDS.sampleResult.sampleStart();
wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath(".//input[@name='q']")));
WDS.sampleResult.sampleEnd();

**

Answer 1

JSR223 Sampler根据脚本内容自动计算持续时间，因此，如果要测量查找输入所需的时间，则必须选择以下选项：

1. 创建另一个JSR223采样器，它将打开所需的页面并将WebDriver实例存储到JMeterVariables中，例如：

   • 第一个JSR223采样器：

     import org.openqa.selenium.WebDriver;
     import org.openqa.selenium.firefox.FirefoxDriver;
     import org.openqa.selenium.firefox.FirefoxOptions;
     import org.openqa.selenium.support.ui.WebDriverWait;
     System.setProperty("webdriver.gecko.driver","/Users/geckodriver");
     FirefoxOptions options = new FirefoxOptions().setAcceptInsecureCerts(true);
     options.addArguments("--headless");
     WebDriver driver = new FirefoxDriver(options);
     def wait = new WebDriverWait(driver, 20);
     driver.get('https://google.com/');
     
     vars.putObject('driver', driver)
     vars.putObject('wait', wait)
     

   • 第二个JSR223采样器：

      import org.openqa.selenium.By;
      import org.openqa.selenium.support.ui.ExpectedConditions;
     
      def driver = vars.getObject('driver')
      def wait = vars.getObject('wait')
      wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath(".//input[@name='q']")));
     

2. 使用SampleResult.addSubResult()函数创建一个“子”样本结果，该结果将测量定位元素所需的时间：

   import org.openqa.selenium.WebDriver;
   import org.openqa.selenium.firefox.FirefoxDriver;
   import org.openqa.selenium.firefox.FirefoxOptions;
   import org.openqa.selenium.By;
   import org.openqa.selenium.support.ui.ExpectedConditions;
   import org.openqa.selenium.support.ui.WebDriverWait;
   System.setProperty("webdriver.gecko.driver","/Users/geckodriver");
   FirefoxOptions options = new FirefoxOptions().setAcceptInsecureCerts(true);
   options.addArguments("--headless");
   WebDriver driver = new FirefoxDriver(options);
   def wait = new WebDriverWait(driver, 20);
   driver.get('https://google.com/');
   
   def myResult = new org.apache.jmeter.samplers.SampleResult()
   myResult.setSampleLabel('Locating element')
   myResult.sampleStart()
   wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath(".//input[@name='q']")));
   myResult.setResponseCodeOK()
   myResult.setSuccessful(true)
   myResult.sampleEnd()
   
   SampleResult.addSubResult(myResult,false)
   

   在这种情况下，您会得到类似的东西：

   

查看Top 8 JMeter Java Classes You Should Be Using with Groovy，以详细了解这些vars和SampleResult的速记