What testing does a website need?
Testing is an important part of the user interface design process. The functionality of the website needs to be tested; first to ensure it works as expected, and secondly to ensure it is as intuitive and as easy to use as possible.
In addition to functionality, the design needs to make sure it remains as consistent as possible. There are many different combinations of computers, operating systems and browsers, and testing is important to ensure that users see a visually consistent design regardless of what operating system or browser they are using.