More unit tests - for initialization functions used in IO tests, plus doxygen updates

[edwardhartnett]

Pull Request Summary

Unit testing and doxygen for some functions used to initialize WW3 code for the I/O tests.

Description

There are some functions used in test_io_point_bin.F90 which are themselves untested. Also they do not all have good doxygen documentation.

Let's discuss whether legacy documentation should be removed with doxygen updates. I can submit the doxygen updates as a stand-alone PR if that is preferable.

More testing is possible for these functions, but this is a good set of smoke tests for them.

Issue(s) addressed

Part of #682

Commit Message

More unit tests - for initialization functions used in IO tests, plus doxygen updates

Check list

• [x ] Branch is up to date with the authoritative repository (NOAA-EMC) develop branch.
• [ x] Checked the checklist for a developer submitting to develop.
• [x ] If a version number update is required, checked the updating version number checklist.
• [x ] If a new feature was added, a regression test for testing the new feature is added.

Testing

Unit tests run on GitHub CI.

[edwardhartnett]

I will close this and work on one PR at a time...