Why is GUI Testing Important?

October 11th, 2016 by inflectra

In an ideal world, the presentation layer would be very simple and with sufficient unit tests and other code-level tests (e.g. API testing if there are external application program interfaces (APIs)) you would have complete code coverage by just testing the business and data layers. Unfortunately, reality is never quite that simple and you often will need to test the Graphic User Interface (GUI) to cover all of the functionality and have complete test coverage.