TestNG - Parallel Test

 TestNG allows the tests to run in parallel or multi-threaded mode. This means that based on the test suite configuration, different threads are started simultaneously and the test methods are executed in them. This gives a user a lot of advantages over normal execution, mainly reduction in execution time and ability to verify a multi-threaded code.

 In this post we will create two testng file as 
TestParallelClassOne and TestParallelClassTwo and each containing two methods i.e test case one and test cases two and each test will open different url in firefox browser. 

TestParallelClassOne

	package com.testng;
	import org.openqa.selenium.WebDriver;
	import org.openqa.selenium.firefox.FirefoxDriver;
	import org.testng.annotations.Test;
	public class TestParallelClassOne {
	@Test
	public void testCaseOne() throws InterruptedException {
	// Printing class name and Id of the thread on using which test method got executed
	System.out.println("Test Case One in " + getClass().getSimpleName()
	+ " with Thread Id:- " + Thread.currentThread().getId());
	WebDriver myTestDriver=new FirefoxDriver();
	myTestDriver.get("http://www.google.com");
	Thread.sleep(2000);
	myTestDriver.manage().window().maximize();
	Thread.sleep(7000);
	myTestDriver.close();
	}
	@Test
	public void testCaseTwo() throws InterruptedException {
	//Printing class name and Id of the thread on using which test method got executed
	System.out.println("Test Case two in " + getClass().getSimpleName()
	+ " with Thread Id:- " + Thread.currentThread().getId());
	WebDriver myTestDriver=new FirefoxDriver();
	myTestDriver.get("http://www.ndtv.com");
	Thread.sleep(2000);
	myTestDriver.manage().window().maximize();
	Thread.sleep(7000);
	myTestDriver.close();
	}
	}

view raw testngparallelone.java hosted with ❤ by GitHub

TestParallelClassTwo as 

	package com.testng;
	import org.openqa.selenium.WebDriver;
	import org.openqa.selenium.firefox.FirefoxDriver;
	import org.testng.annotations.Test;
	public class TestParallelClassTwo {
	@Test
	public void testCaseOne() throws InterruptedException {
	//Printing class name and Id of the thread on using which test method got executed
	System.out.println("Test Case One in " + getClass().getSimpleName()
	+ " with Thread Id:- " + Thread.currentThread().getId());
	WebDriver myTestDriver=new FirefoxDriver();
	myTestDriver.get("http://www.facebook.com");
	Thread.sleep(2000);
	myTestDriver.manage().window().maximize();
	Thread.sleep(7000);
	myTestDriver.close();
	}
	@Test
	public void testCaseTwo() throws InterruptedException {
	//Printing class name and Id of the thread on using which test method got executed
	System.out.println("Test Case Two in " + getClass().getSimpleName()
	+ " with Thread Id:- " + Thread.currentThread().getId());
	WebDriver myTestDriver=new FirefoxDriver();
	myTestDriver.get("http://www.bbc.com");
	Thread.sleep(2000);
	myTestDriver.manage().window().maximize();
	Thread.sleep(7000);
	myTestDriver.close();
	}
	}

view raw testngparallelclasstwo.java hosted with ❤ by GitHub

Now create testng.xml file as 

	<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
	<suite name="Parallel test suite" parallel="classes" thread-count="2">
	<test name="Test 1">
	<classes>
	<class name="com.testng.TestParallelClassOne"/>
	<class name="com.testng.TestParallelClassTwo"/>
	</classes>
	</test>
	</suite>

view raw testngparallel.xml hosted with ❤ by GitHub

 

Right click and run as Testng suite. 

If we see the output each test is running on different thread. 

[TestNG] Running:
  /Users/gururaj/workspace/ManipalPro/ParallelRun.xml

Test Case One in TestParallelClassOne with Thread Id:- 10
Test Case One in TestParallelClassTwo with Thread Id:- 11
log4j:WARN No appenders could be found for logger (org.apache.http.client.protocol.RequestAddCookies).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Test Case two in TestParallelClassOne with Thread Id:- 10
Test Case Two in TestParallelClassTwo with Thread Id:- 11

===============================================
Parallel test suite
Total tests run: 4, Failures: 1, Skips: 0
===============================================