A Test-Driven Web application model based on layered approach

The eXtreme Programming (XP) software development methodology has received considerable industrial attention in recent years. As a methodology which is highly responsive to customer´s changing requirements, XP has been widely used in Web application developing process. As a key characteristic of XP, Test-Driven Development(TDD) can be used for refactoring the new code and ensuring the quality of the Web application software. At the same time, Web application make use of the layered approach to enhance the scalability. As to the guideline of using the layered approach with XP methodology, no studies has been found so far. Based on the layered approach, this paper proposes a Test-Driven model for Web application. What´s more, this paper identifies what kinds of test should be done in every layer of the Web application.