Introduction To TestNG Framework

Introduction of TestNG Framework :

In selenium using java there are two frameworks are there -

1- JUnit

2- TestNG (Next Generation)

Selection of testing framework is depends on programing platform :

If you select java, supported frameworks are :

Java – Junit, TestNG.

C# .Net – Nunit.

PHP – Behat + Mink.

Ruby – Repect, Test:Unit.

Python – PyUnit, Py:Test.

-> TestNG is a testing framework was design in to simplify a broad range of testing needs from unit testing to system testing. It is open source and third party . It is also used for other level of testing.

-> Initially it was developed for unit testing, now used for all levels of testing.

-> TestNG is a open-source software where NG stands for Next Generation.

-> TestNG inspired by JUnit & NUnit but introduced some new functionalities.

Advantages of TestNG :

-> TestNG annotations are easy to create testcases.

-> Testcases can be grouped and prioritized more easily.

-> Executing multiple programs / Classes using XML file.

Scenario -1

-> We have one class and it has four testcases, Execute then four testcases will be executed continously.

Scenario -2

-> We have four java classes, each class having four testcases (Total sixteen testcases),

Execute using TestNG all four classes can be executed continously.

Install TestNG and write first TestNG test case:

1- Launch Eclipse IDE and Select Help menu.

2- Select Install New Software.

3- Click “Add Button”.

4- Enter name as TestNG.

5- Enter url as : http://beust.com/eclipse/.

6- Click OK.

Then TestNG option will be populated.

7- Select TestNG.

8- Next > Next > Accept the Agreement > Finish.

After finish restart the eclipse IDE then you can use TestNG.

Verify the TestNG -

Write a TestNG program / Test case and execute :

Test Steps :

1- Launh the browser.

2- Navigate to google home page.(https://www.google.co.in/)

Verification point :

1- Capture the page title and compare with expected.

Expected : “Google”.

Test data : N/A.

package com.framework;

import java.util.concurrent.TimeUnit;

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

import junit.framework.Assert;

public class Example1 
{

	@Test
	public void example()
	{
	   System.setProperty("webdriver.chrome.driver","./exefiles/chromedriver");
       WebDriver driver=new ChromeDriver();
       driver.manage().window().maximize();
       driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
       driver.get("https://www.google.co.in/");
       String pageTitle = driver.getTitle();
       Assert.assertEquals(pageTitle, "Google");
       driver.close();
    }
}

Note : Main method is not used in TestNG program.

-> TestNG program contains methods only, that contain annotation.

-> If we don't write @Test annotation then method / testcase won't be executed.

-> Create Multiple test cases :

1- Launch browser().

2- Verify Title().

3- Close Browser().

In this TestNG program there are three testcases -

package com.framework;

import java.util.concurrent.TimeUnit;

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

import junit.framework.Assert;

public class Example2 
{
	static WebDriver driver;
	@Test (priority=1)
	public void launchBrowser()
	{
	   System.setProperty("webdriver.chrome.driver","./exefiles/chromedriver");
       driver=new ChromeDriver();
       driver.manage().window().maximize();
	}
	@Test (priority=2)
	public void verifyTitle()
	{
		driver.get("https://www.google.co.in/");
	    String pageTitle = driver.getTitle();
	    Assert.assertEquals(pageTitle, "Google");
       
    }
	@Test (priority=3)
	public void closeBrowser()
	{
		driver.close();
	       
    }
}

-> TestNG test cases are executed in alphabetical order, If you want to control the test execution process then use priority attribute.