Working with TestNG - Starters Guide

To handle the error occurred during run time(exceptions) TestNG provides an parameter expectedExceptions is used along with the @Test annotations.User can test whether a code throws a desired exception or not. Let's see @Test(expectedExceptions)with an example.

Create a Class:

Create a class named as ExceptionExample.java

package testNG;

public class ExceptionExample {

	public void excepTestExample() {
		System.out.println("Inside excepTestExample()");
		int numb1 = 0;
		int numb2 = 10 / numb1;
		System.out.println("numb2:" + numb2);
	}

}

Create Test Case Class:

Create a class named as TestException.java

package testNG;

import org.testng.annotations.Test;

public class TestException {
	
	ExceptionExample exp = new ExceptionExample();
	
	 @Test(expectedExceptions = ArithmeticException.class)
	   public void test1() {	
	      System.out.println("Inside test1()");     
	      exp.excepTestExample();   
	 }
}

Create testing.xml file as shown below.

<?xml version="1.0" encoding="UTF-8"?>
<suite name="test Suite">
 <test name="Exception Example">
   <classes>
     <class name="testNG.TestException"/>
   </classes>
 </test>
</suite>

Run the testing.xml file by click on run button in eclipse.

The Output is: