Kalyani P.

The TestNG is one of the most important component when you are actually starting and developing the framework from scratch level. Because you can have the control on all of your test cases and their execution with the help of TestNG.

So when I say you can have the control on your test cases there's a lot, so what all the important features we have in dealing and controlling test cases. I can give you some high level examples.

Suppose, if you want to run a test case "A", before that a prerequisite, you need to run some multiple test cases before you begin the test case "A". Now you can set and map the test cases in accordance to the requirement with the help of TestNG. In such a manner those prerequisite Test Cases will run first and only then it will trigger the test case "A", in that way you can control your test cases.

In Selenium, the four parameters that are typically required to create a web driver instance are:

1. Browser Type: This parameter specifies the type of browser you want to use for the automation. For example, you may choose to use Chrome, Firefox, Edge, or Safari.
2. Driver executable: This parameter specifies the path to the executable file for the selected browser. For example, if you want to use Chrome, you'll need to specify the path to the ChromeDriver executable.
3. Web driver instance: This parameter specifies the instance of the web driver you want to use. For example, if you're using Java, you might use the WebDriver interface.
4. URL: This parameter specifies the URL of the web page you want to automate. For example, if you want to automate Google Search, you'll need to pass the URL of the Google Search page.