SSBSE Summary of.NET/C# Instrumentation for Search-Based Software Testing

C# is a widely used programming language. However, to the best of our knowledge, there is no documented work on enabling Search-Based Software Testing methods for C# and.NET applications. This paper introduces a white-box testing approach and an open-source tool for C# applications that collects code coverage information in real-time via.NET bytecode instrumentation. The method improves the search's direction by using Branch Distance heuristics. The tool was evaluated on three.NET RESTful APIs after being integrated into the EvoMaster test generator. Results show that our strategy achieves significantly higher code coverage than grey-box testing tools.