UI Testing (User Interface Testing)

UI Testing is a type of software testing that focuses on verifying the visual elements and interactive behavior of a user interface. The goal is to ensure that the graphical components — such as buttons, text fields, menus, and layouts — are displayed correctly and function as expected. UI testing is critical for confirming that the application looks good and provides a smooth, intuitive experience for the user.

Example: A quality assurance team is testing a new website with a login page. They would perform UI testing to verify several key elements. They would check:

1. Layout: The username and password fields are aligned correctly and the "Sign In" button is properly centered.
2. Functionality: Clicking the "Sign In" button successfully submits the form, and hovering over the button highlights it.
3. Responsiveness: The login page's layout and elements resize correctly when viewed on both a desktop browser and a mobile phone.

This thorough process ensures that the login screen is not only functional but also visually appealing and easy to use.