Test suite fails to build with module version

[mccakit]

I can't build the test suite by swapping the header with a module.

[chriselrod]

It works for me using CMake and a git submodule. The relevant part of the CMakeLists.txt:
https://github.com/LoopOptimization/Math/blob/c0bc58492316a274e9e380d5d3642d0ed0675f88/test/CMakeLists.txt#L113-L131

However, I'm also on an older version. I tried checking out the latest master, and it seems to skip running all tests for some reason. I haven't looked into that yet (I just came here to see if anyone already reported that; I'll only file an issue once I have something informative/helpful/reproducible to say on the matter).