Writing unit tests in C++ has never been easier and faster.

    Doctest 2 released! C++11, thread-safety, stand-alone assertions and more!

by Viktor Kirilov

From the article:

The main 4 developments are:

• moved to C++11 => greatly simplified the codebase
• thread-safety => asserts and logging utilities can be used in multiple threads spawned from a single test case without race conditions (thread sanitizer tested) - see example
• given that doctest is extremely light on compile times and is meant to be used for tests side-by-side with the production code - added the ability for asserts to be used outside of a testing context (as a general purpose assert library) - example
• a complete overhaul of the internals of the framework (moving from printf-style logging to streams and changing internal structures) to allow for easier future development (including a reporter interface - work in progress)