TestNG is next generation testing framework like JUnit & NUnit but with extra features(Read keywords, Generate Test Reports, Generate logs) and easy to use. TestNG framework can cover different type of the tests like Integration, Unit, end-to-end, etc.

  Installing TestNG in Eclispe:

• Open Eclipse , Select Help / Software updates / Find and Install.
• Search for new features to install.
• New remote site.
• For Eclipse 3.4 and above, enter http://beust.com/eclipse.
  
• For Eclipse 3.3 and below, enter http://beust.com/eclipse1.
  
• Make sure the check box next to URL is checked and click Next.
  
• Eclipse will then guide you through the process.

We are going to Test a Demo website “http://demoaut.com/mercuryregister.php” and will write a Test case
to Do a Registration in it.

Project Structure:

Step1:
Create a project in the eclispe. Add the Selenium StandAlone jar and TestNG jar into a new libs  folder.
Make sure you add them to Build Path by Right Click – Build Path –> Add to Build Path.

Step2:
Create a Base Class with Test Fixture methods e.g. Setup and Tear Down. Note: I have added function name
as JUnit you can name them as you want), Add annotations as Before Method and After Method.

[java]
package com.scrolltest.testng;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;

public class BaseClass {

WebDriver driver;

@BeforeMethod
public void setUp() {
driver = new FirefoxDriver();

}

@AfterMethod
public void tearDown() {
// driver.close();
driver.quit();
}

}
[/java]

Step3 :
Create a Separate Class with Name Registration .java to write a Test case for Registration of the
Demo: Website http://demoaut.com/mercuryregister.php

[java]
package com.scrolltest.testng;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.ui.Select;
import org.testng.Reporter;

public class RegisterationPageObect {

private WebDriver driver;

public RegisterationPageObect(WebDriver driver) {
this.driver = driver;
}

public void RegisterUser() {
driver.findElement(By.name("firstName")).sendKeys("Pramod");
driver.findElement(By.name("lastName")).sendKeys("Dutta");
driver.findElement(By.name("phone")).sendKeys("981457452");
WebElement t = driver.findElement(By.id("userName"));

driver.findElement(By.id("userName")).sendKeys("a@c.com");
Reporter.log(""+t.getAttribute("maxlength"));
// #Drop Down
new Select(driver.findElement(By.name("country")))
.selectByVisibleText("ANGUILLA");
// register
driver.findElement(By.name("register")).click();
}

}[/java]

Step4: Now Lets create a Final class and TestNG xml file.

MainClass.java

[java]
package com.scrolltest.testng;

import org.openqa.selenium.By;
import org.openqa.selenium.support.ui.Select;
import org.testng.annotations.Test;

public class MainClass extends BaseClass {

@Test
public void testRegisterationInDemoAUT() throws InterruptedException {

RegistrationPageObect pageOject = new RegistrationPageObect(driver);
driver.get("http://demoaut.com/mercuryregister.php");
pageOject.RegisterUser();

assert driver
.findElement(By.tagName("body"))
.getText()
.contains(
"Thank you for registering. You may now sign-in using the user name and password you’ve just entered.");

assert driver.findElement(By.tagName("body")).getText()
.contains("Dear Pramod Dutta,");

}

}
[/java]

Step5:
Now Run the Test by Creating new TestNG configuration by Clicking on the Project->Run Configuration, Select
the TestSuite and browse the XML file(testng.xml). and Now Run the Project.

Step6:
After run successfully, If you refresh you project you will see the test-output folder , Open “index.html” and see that You Test Suite Results. Click on the Report output link you can see max length also.(Used as Logging)

Source code Github