GUL uses the Catch2 test framework in at least version 3 for its unit tests.

Please refer to https://github.com/catchorg/Catch2/blob/master/docs/tutorial.md for an introduction to Catch2.

Note

The predecessor library GUL14 included a header-only version of Catch2. This header is no longer available in GUL17. Catch2 must be installed separately.