One might have heard many rumors that the demand for Selenium is going down and Selenium is getting outdated. However, with Selenium 4 on the table, we can say that the automation testing framework is likely to be here for the long term. Learn Selenium and become one of the most sought-after automation testers today. Selenium is here to stay!

That said, Selenium is arguably one of the top automation testing frameworks used to test web applications across browsers and devices. 

Before we understand the integration between Selenium and TestNG, let’s see what Selenium is capable of and what it is not. Why Selenium requires third-party integration and what is TestNG?

What is Selenium?

Selenium is a framework that consists of four key tools that carry out interaction with the browsers, automate the browser actions to perform functional and regression testing. 

Selenium framework essentially consists of:

Selenium is an open-source, free, automation testing framework that can support multiple languages like Java, JavaScript, Python, C#, Perl, Ruby, PHP, etc. Selenium with its powerful Webdriver component enables parallel testing across browsers and machines.

While Selenium has numerous reasons for its adoption, there are certain drawbacks, and one of them being the usage of third-party tools for conducting certain functions that Selenium is not capable of.

By default, Selenium is not capable of generating proper format for the test results. And this can be achieved through TestNG.

What is TensNG?

TestNG is again an automation testing framework in which NG means Next Generation. TestNG is built on top of JUnit and makes up for all the disadvantages of the latter. 

Using TestNG, one can generate a proper, comprehensive test report with all the information like how many test cases are passed, failed, and skipped. It also allows you to deal with the failed test cases separately.

Key features of TestNG:

  • Generates a detailed report on how many test cases are conducted, how many passed, the number of test cases failed, and the number of test cases skipped.
  • Test cases can be grouped into a testing.xml file. It enables one to prioritize the test cases as well.
  • It enables multiple executions of the same test script without a loop with the help of the keyword called ‘invocation count’.
  • With the help of TestNG, once can run multiple tests on multiple browsers at the same time.
  • TestNG can be further integrated with Maven, Jenkins, etc.
  • The annotations in the TestNG are very easy to understand and use. For example, @BeforeMethod, @AfterMethod, @ BeforeTest, @AfterTest.
  • While WebDriver has no standard procedure to generate the test reports, TestNG has the mechanism to generate user understandable reports.
  • In TestNG, the tests can be coded easily.
  • The exceptions are handled by TestNG automatically without terminating the tests prematurely. The uncaught exceptions are mentioned as failed steps in the report.

Why Selenium requires TestNG integration?

As already mentioned, Selenium is incapable of generating a proper test report. For this, Selenium needs third-party integration with either JUnit or TestNG frameworks. However, TestNG has more advantages than JUnit that makes TestNG integration with Selenium more meaningful.