Introduction
Automation testing refers to the testing of the software in which tester write the test script once with the help of testing tools and framework and run it on the software.
The test script automatically tests the software without human intervention and shows the result.

Prerequisites for Automation:
To begin automation testing using Selenium, there are few prerequisites should have in place:

1. Programming Language: Choose a programming language in which you will write your test scripts. Java, Python, C#, and Ruby are common choices for Selenium automation. You should have a good grasp of the chosen language.so we have chosen java.
2. Integrated Development Environment (IDE): Install an integrated development environment (IDE) such as Eclipse, IntelliJ IDEA, or Visual Studio Code to write and manage your Selenium scripts. We have chosen Eclipse as IDE platform.
3. Java Development Kit (JDK): If u opt for Java, you’ll need to install the Java Development Kit (JDK) on your system.
4. Selenium WebDriver: Download the Selenium WebDriver for your preferred programming language. You can add the WebDriver libraries to your project using build tools like Maven.
5. Web Browsers: Make sure you have the web browsers you intend to automate (e.g., Chrome, Firefox) installed on your system.
6. Web Drivers: Selenium interacts with browsers through web drivers. You should have the appropriate web drivers for the browsers you plan to test with (e.g., Chrome Driver, Gecko Driver). These should be downloaded and configured. Ensure that your chosen IDE is integrated with the Selenium WebDriver, making it easier to write, run, and debug test scripts.
7. Test Framework: Select a test framework such as TestNG or Hybrid. Test frameworks help structure your tests and provide reporting capabilities.

By meeting these prerequisites, you’ll be well. prepared to start automation testing using Selenium and create efficient, maintainable, and effective test scripts.

The following below video showcases a small presentation on automation testing:

Tools used for Automation testing.

1. Eclipse:
   Eclipse is a digital workspace for automation testing. It’s a special software that makes creating and running automated tests easier. It is used by testers because it’s super flexible and works with different programming languages. It helps in writing, organizing, and running tests for finding problems or bugs in software, making sure everything works smoothly.
2. Selenium:
   Selenium is an Open source, It Supports multiple languages like java, python, Ruby. Scripts can be run on Multiple browsers like Chrome, Firefox, IE, Microsoft Edge. It supports Multiple operating systems like Linux, Windows, MacOS. It can be integrated with third party applications like TestNG, Cucumber.
3. TestNG:
   TestNG is a testing framework used with Selenium for automating tests. It allows for organizing test cases, running tests in a specific sequence. It offers annotations to manage test execution flow, such as @Test for defining test cases, @BeforeMethod and @AfterMethod as you can see the highlighted point in the picture for pre and post-test setups, and @DataProvider for parameterization. This combination of Selenium and TestNG helps in efficient and structured automation testing, enabling testers to create, manage, and execute test cases reliably. Generates HTML reports showing test execution details.
4. Maven:
   Maven is an open-source tool. Maven allows to download all the JARs and Dependencies and manage lifecycle for a Selenium Java project. This makes it easier for the QA to configure dependencies for Selenium Java by automatically downloading the JARs from the Maven repository.

Advantages of Automation testing

Efficiency: Automation testing can execute repetitive and complex tasks faster than manual testing.
Accuracy: Automated tests perform the same steps precisely every time, reducing the chance of human errors.
Reusability: Test scripts can be reused across different phases of development and in various testing scenarios.
Faster Feedback: Automated tests provide rapid feedback on the software’s stability and functionality.

Let us see how we can execute the test cases in the below video: