如何使用TestNG和Selenium每次在新窗口运行不同Java类的测试用例

Got it, let's get your 3 test classes running in separate browser windows. Here's the step-by-step fix:

1. Update Your TestNG XML Configuration #

Right now, your suite uses parallel="methods", which runs every individual test method in parallel. To run entire test classes in parallel (each in their own window), switch to parallel="classes". Set thread-count to at least 3 (matching the number of your test classes) so all classes can run simultaneously.

Here's the modified XML:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Fanfight Test" thread-count="3" parallel="classes">
    <listeners>
        <listener class-name="com.fanfight.test_case.ListenerClass"></listener>
    </listeners>
    <test name="User Login">
        <!-- Add your test classes here -->
        <classes>
            <class name="com.fanfight.test_case.Class1"/>
            <class name="com.fanfight.test_case.Class2"/>
            <class name="com.fanfight.test_case.Class3"/>
        </classes>
    </test>
</suite>

2. Use Per-Class WebDriver Instances #

Critical: Don’t share a static WebDriver across classes. Instead, initialize a unique driver for each test class in the @BeforeClass method, and clean it up in @AfterClass. This ensures each class gets its own fresh browser window.

Example test class structure:

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

public class Class1 {
    private WebDriver driver;

    @BeforeClass
    public void setUp() {
        // Initialize driver for this class
        driver = new ChromeDriver();
        driver.manage().window().maximize();
    }

    @Test
    public void testMethod1() {
        driver.get("https://your-url.com");
        // Test logic here
    }

    // ... 14 more test methods ...

    @AfterClass
    public void tearDown() {
        // Quit driver after all methods in this class finish
        if (driver != null) {
            driver.quit();
        }
    }
}

3. Ensure Your Listener Works with Per-Class Drivers #

If your ListenerClass interacts with WebDriver, make sure it accesses the driver instance tied to the current test class/thread. Avoid static driver references here. You can retrieve the test class instance from ITestResult to get its driver:

import org.testng.ITestResult;
import org.testng.TestListenerAdapter;

public class ListenerClass extends TestListenerAdapter {
    @Override
    public void onTestStart(ITestResult result) {
        // Get the test class instance
        Object testClass = result.getInstance();
        // Assuming your test classes extend a base class with getDriver()
        if (testClass instanceof YourBaseTestClass) {
            WebDriver driver = ((YourBaseTestClass) testClass).getDriver();
            // Use driver for listener logic (e.g., take screenshot on failure)
        }
    }
}

What This Does #

When you run the suite:

• Each of your 3 test classes will launch its own browser window.
• All 15 methods in a single class will run sequentially in that same window (preserving session state if needed).
• The 3 classes will run in parallel (thanks to parallel="classes" and thread-count="3").

内容的提问来源于stack exchange，提问作者shailav agrawal