Fix #212, Add unit test and coverage workflow

Checklist (Please check before submitting)

[x] I reviewed the Contributing Guide.
[x] I signed and emailed the appropriate Contributor License agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution

Testing performed CI w/ modified path/repo for reference: https://github.com/skliper/CF/actions/runs/2174432954

Expected behavior changes None

System(s) tested on CI

Additional context nasa/cFS#459

Third party code None

Contributor Info - All information REQUIRED for consideration of pull request Jacob Hageman - NASA/GSFC

nasa / CF