Working with TestNG - Starters Guide

Here we explain the execution procedure of the TestNG methods. There is no format for defining testing methods. The order of the methods called is as shown below in example

Code example

package testNG;

import org.testng.annotations.AfterClass;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.AfterSuite;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeSuite;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

public class TestNGDemo {

	@BeforeClass
	public static void DatabaseConnection() {
		System.out.println("@Before Class");
	}

	@AfterClass
	public static void disConnect() {
		System.out.println("@After Class");
	}

	@BeforeTest
	public void setUp() {
		System.out.println("@BeforeTest");
	}

	@AfterTest
	public void cleanUp() {
		System.out.println("@AfterTest");
	}
	@BeforeSuite
	public void method1() {
		System.out.println("@beforeSuite");
	}

	@AfterSuite
	public void method2() {
		System.out.println("@afterSuite");
	}

	@BeforeMethod
	public void method3() {
		System.out.println("@beforeMethod");
	}

	@AfterMethod
	public void method4() {
		System.out.println("@afterMethod");
	}
	@Test
	public void testExample1() {
		System.out.println("@Test1");
	}
	@Test
	public void testExample2() {
		System.out.println("@Test2");

	}
}

Now in you Eclipse IDE, Right click the TestNGDemo.java file and the Goto Run as > TestNG Test as shown below

Here is the output we get

@beforeSuite
@BeforeTest
@Before Class
@beforeMethod
@Test1
@afterMethod
@beforeMethod
@Test2
@afterMethod
@After Class
@AfterTest
PASSED: testExample1
PASSED: testExample2

===============================================
 Default test
 Tests run: 2, Failures: 0, Skips: 0
===============================================

@afterSuite

===============================================
Default suite
Total tests run: 2, Failures: 0, Skips: 0
===============================================

The execution procedure is:

• BeforeSuite() method is executed only once as first of all.
• AfterSuite() method executes only once at last of all.
• Methods beforeTest(), beforeClass(), afterClass(), and afterTest() are executed only once.
• Before executing each test case beforeMethod() method executes.
• After executing each test case afterMethod() method executes.
• Each test case executes in between the methods beforeMethod() and afterMethod(),.

In next part of this tutorial we will check out how to execute tests