How to Do Parallel Test Execution In Selenium TestNG Example Program?

Parallel Test Execution TestNg Program: How to Do Parallel Test Execution In Selenium TestNG Example Program?

package com.softwaretestingo.testng;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.edge.EdgeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.Test;
public class ParalleExecutionTest 
{
	@Test
	public void openChrome() throws InterruptedException
	{
		WebDriver driver=new ChromeDriver();
		driver.get("https://demo.softwaretestingo.com/");
		Thread.sleep(3000);
		driver.quit();
	}
	
	@Test
	public void openFirefox() throws InterruptedException
	{
		WebDriver driver=new FirefoxDriver();
		driver.get("https://demo.softwaretestingo.com/");
		Thread.sleep(3000);
		driver.quit();
	}
	
	@Test
	public void openEdge() throws InterruptedException
	{
		WebDriver driver=new EdgeDriver();
		driver.get("https://demo.softwaretestingo.com/");
		Thread.sleep(3000);
		driver.quit();
	}
}

Here is the TestNG XML file

To run parallel, we have two parameters in the XML file “thread-count=”5″ parallel=”methods”. If you want to run Classes parallel then in the place of parallel=”methods” you need to mention parallel=”classes” similarly you can configure for tests also.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "https://testng.org/testng-1.0.dtd">
<suite name="ParalleExecutionTest" verbose='2' thread-count="5" parallel="methods">
  <test thread-count="5" name="ParalleExecutionTest">
    <classes>
      <class name="com.softwaretestingo.testng.ParalleExecutionTest"/>
    </classes>
  </test> <!-- ParalletExecutionTest -->
</suite> <!-- ParalletExecutionTest -->