During the development of web applications, it often occurs, that we
unintentionally change some functionalities of previously implemented features. Verification of application behavior throughout the whole development
process is usually approached with regression testing. Preparation of such
tests could require a substantial amount of resources. They also need to be
adapted when functionality changes are expected. We implemented a universal tool that can find differences between two different versions of the same
web application. Our approach includes the use of a web crawler that is
capable of dynamic content discovery by simulating user actions such as submitting forms and clicking. Gathered HTML documents are then compared
in a manner so that the tree structure of said documents is respected. We
also implemented a web application that displays all results in chronological
order of commits in a Git repository.
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