<ahref="https://github.com/philsquared/Catch/releases/download/v1.8.1/catch.hpp">The latest, single header, version can be downloaded directly using this link</a>
Catch stands for C++ Automated Test Cases in Headers and is a multi-paradigm automated test framework for C++ and Objective-C (and, maybe, C). It is implemented entirely in a set of header files, but is packaged up as a single header for extra convenience.