What are Annotations in TestNG: Selenium Automation

In the Previous tutorials, we explained how to add TestNG to eclipse and how to set up for creating the first test using TestNG. In this article, we will understand what annotations in TestNG are and how they are used:

When we create a test in TestNG, we divide the code into different annotations based on which section needs to be executed and in which order. 

Let us take an example, We have three different tests to be automated. Each of the test starts with Login into application, In the next step, the user has either to view e-mails, write e-mail or verify successful login only. In the final step, we have to log out of application.

To code this, we have to login into application in each of the three test, so we can define this method or code in @BeforeTest.
Next we will define all the tests to be executed with annotation @Test and can assign group of test to be executed using group with test.

Once the test is executed, user will log out from application, this we will tag with annotation @AfterTest.

Below code explains how the three annotations can be used in the test. There are many more annotations which we can add in the test to give logical structure to the test.

 package testNG;  
 import org.testng.annotations.Test;  
 import org.testng.annotations.BeforeTest;  
 import org.testng.annotations.AfterTest;  
 public class NewTest {  
  @BeforeTest  
  public void Login()  
  {  
       System.out.println("Login into application");  
  }  
  @Test(groups = { "testemail" })  
  public void mailval()  
  {  
       System.out.println("test e-mail");  
  }  
  @Test(groups = { "testemail" })  
  public void emailval()   
  {  
       System.out.println("e-mailvalidated");  
  }  
  @AfterTest  
  public void Logout()  
  {  
       System.out.println("Logout from application");  
  }  
 } 

                                  Annotations in TestNG

   Below table explains the different annotation used in TestNG:

Annotation	Description
@BeforeSuite	Annotated method to be executed before all tests in the suite have run.
@AfterSuite	Annotated method to be executed after all tests in the suite has run.
@BeforeTest	Annotated method to be executed before any test method belonging to the classes inside the <test> tag is run.
@AfterTest	Annotated method to be executed after all the test methods belonging to the classes inside the <test> tag have run.
@BeforeGroups	The list of groups that this configuration method will run before. This method is guaranteed to run shortly before the first test method that belongs to any of these groups is invoked.
@AfterGroups	The list of groups that this configuration method will run after. This method is guaranteed to run shortly after the last test method that belongs to any of these groups is invoked.
@BeforeClass	The annotated method to be executed before the first test method in the current class is invoked.
@AfterClass	The annotated methods to be executed after all the test methods in the current class have been run.
@BeforeMethod	The annotated method to be executed before each test method.
@AfterMethod	The annotated method to be executed after each test method.

In the next article, we will explain how a test suite is defined in TestNG and how does a test pass or fail in TestNG i.e how to add assertions in TestNG.

Creating first TestNG test using eclipse for Selenium WebDriver

TestNG provides a testing framework to test the application. TestNG framework can be used to write unit test, integration as well as functional tests. Our objective in this blog will be to understand and implement TestNG framework while automating with Selenium WebDriver using eclipse.

In the previous article, we explained how to install TestNG libraries with eclipse. In this article, we will explain how to create first TestNG test in eclipse.

Pre-Requisite: We have installed TestNG as discussed in previous article.

Steps to create first TestNG test in eclipse:

• Create a new Project in eclipse as shown in the image below and add the TestNG library:

Add caption

• Once we have added the library, we can use the library in our test.

Creating a testNG Class in the java Project:

A testNG test is executed based on the testNG annotations in the TestNG class.

Below code will be generated once we click on finish.

 package testNG;  
 import org.testng.annotations.Test;  
 import org.testng.annotations.BeforeTest;  
 import org.testng.annotations.AfterTest;  
 public class NewTest {  
  @Test  
  public void f() {  
  }  
  @BeforeTest  
  public void beforeTest() {  
  }  
  @AfterTest  
  public void afterTest() {  
  }  
 }  

Setting Up TestNG with eclipse

The below image explains how to setup TestNG with eclipse.

A. Navigate to Help>Install new Software.

B. Search for TestNG or http://beust.com/eclipse in Step B.)

C. In Step C.), Select checkbox for TESTNG and click on next.

D. In step D.) accept  the license agreement.

E. Software download will start and will be installed.

F. Once download is completed, it will ask to restart the eclipse. Click on Yes. This will restart eclipse.

In the next article, we will discuss how to create a TestNG test for selenium in eclipse.