Light and feature-rich C++ testing framework

 doctest is a light and feature-rich
 C++98 / C++11 single-header testing framework
 for unit tests and TDD.
 .
 It is inspired by the unittest {} functionality
 of the D programming language and Python's docstrings -
 tests can be considered a form of documentation
 and should be able to reside near the production code
 which they test.
 This isn't possible (or at least practical)
 with any other testing framework for C++.