Automatic testing of interactive lighting simulation software package

The article is devoted to automatic regression testing technology used in development and maintenance within the life cycle of modern computer graphics and optical simulation software systems. The main types of errors and ways to implement tests using the command line, the Python script language, and the AutoIt package, which allow you to create tests for an interactive graphical user interface, are considered. In practice the described technology allows to reduce the time for testing the released version of a software product from several weeks to couple of hours.