This project explores the level of difficulty and challenges faced when dealing with the parallel execution of an acceptance test suite that follows behaviour-driven development (BDD) in C++ compared to Java. Specifically, it looks at problematic test cases involving multiple concurrent clients within an asynchronous client-server university application. This problem was already explored in Java using the Cucumber testing framework with an asynchronous client-server university system, where it was found to be difficult to run and implement correctly, and non-trivial to conceptualize. This project shows that the same problems exist within C++ and the doctest testing framework, and that there is a lack of support for true, fully-featured BDD testing frameworks with support for parallel execution like Cucumber in the C++ ecosystem.