@BeforeTest @AfterTest不在子类中执行，@BEforeClass在父类中执行

Question

我的基础班

package selenium.setup;

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.WebDriver;
import org.testng.annotations.AfterClass;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.BeforeSuite;
import org.testng.annotations.Parameters;

public class SeleniumBaseTest {
    protected final static ThreadLocal<WebDriver> webDriver = new ThreadLocal<>();
        
    @BeforeClass
    @Parameters({"browser","baseURL"})
    public void Setup(String browser, String baseURL) throws Exception{
        webDriver.set(BrowserManager.doBrowserSetup(browser));
        System.out.println("Before Test Thread ID: "+Thread.currentThread().getId());
        //get URL
        webDriver.get().get(baseURL);
        webDriver.get().manage().window().maximize();
        webDriver.get().manage().deleteAllCookies();
        webDriver.get().manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
    }

    @AfterClass
    public void tearDown(){
        webDriver.get().quit();
        System.out.println("After Test Thread ID: "+Thread.currentThread().getId());
        webDriver.remove();
    }
}

少儿班

`package selenium.trials;

import java.time.Duration;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.interactions.Actions;
import org.testng.ITestContext;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

import selenium.setup.SeleniumBaseTest;
import selenium.utils.WebElementUtility;

public class SeleniumDragnDrop extends SeleniumBaseTest{
    Logger logger;
    WebDriver driver;
    
    @BeforeTest(alwaysRun=true)
    public void beforeTest(ITestContext testContext){
      logger = LogManager.getLogger(this.getClass());
      driver = webDriver.get();
      
      logger.info("In dragNDrop beforeTest: Thread ID: "+Thread.currentThread().getId());
    }
    
    @Test
    public void dragNDrop() throws InterruptedException {
        logger.info("In dragNDrop Thread ID: "+Thread.currentThread().getId());
        
    WebElementUtility.clickOn(driver,driver.findElement(By.linkText("Drag and Drop")), Duration.ofSeconds(15));
        
    WebElement source = driver.findElement(By.id("column-a"));
    WebElement dest = driver.findElement(By.id("column-b"));
    Actions action = new Actions(driver);
    action.dragAndDrop(source, dest).build().perform();
    logger.info("After dragNDrop Thread ID: "+Thread.currentThread().getId());
    }
    
    @AfterTest
    public void tearDown() {
    logger.info("In dragNDrop tearDown : Thread ID: "+Thread.currentThread().getId());
    }
}`

配置文件 - testng.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="TestSuite" thread-count="2" parallel="classes">
<parameter name="browser" value="Chrome"/>
<parameter name="baseURL" value="https://the-internet.herokuapp.com"/>

<test name="SeleniumTrials"  preserve-order="true">
<!-- 
    <packages>
        <package name="selenium.trials"/>
    </packages> -->
    <classes>
        <class name="selenium.trials.SeleniumDragnDrop"/>
        
        <class name="selenium.trials.SeleniumAlerts"/>
    </classes>
</test>
</suite>

问题

当我运行 testngSuite 时，父类 - SeleniumBaseTest.java 中的 @BeforeClass 方法 setup() 被执行。但是，子类 - SeleniumDragnDrop.java 中的 @BeforeTest 方法不会执行。 因此测试失败，因为驱动程序变量未初始化

我在父类 @BeforeClass 方法中初始化 ThreadLocal，在子类 @BeforeTest 方法中我将对它的引用存储在 WebDriver 对象中。但是 @BeforeTest 方法永远不会执行，并且驱动程序变量保持未初始化状态。

Answer 1

我可以在这篇文章中找到答案 - TestNG 中 BeforeClass 和 BeforeTest 之间的区别。

@BeforeTest 在@BeforeClass 之前运行。因此，驱动程序变量为 null，因为它是在 BeforeTest 之后运行的 BeforeClass 中初始化的。