Explore a modern C++20 testing framework called Clean Test in this conference talk from Meeting C++ 2022. Discover how automated software testing can improve code quality and development efficiency. Learn about Clean Test's unique features, including constexpr expression introspection with short-circuiting, thread-safety, and simultaneous test execution. Understand the framework's technical advantages, such as Junit support, Unicode handling, and runtime configurability. Gain insights into migrating existing tests to Clean Test using hackable and extensible utilities. Delve into the benefits of a dependency-free, standard C++20 library that requires no macros, making it an ideal choice for large-scale collaborative projects with well-defined components.