Add consistency checks to make sure unit test data are identical between R and python

[javh]

The unit test data sets seems to have gotten out of sync:

• Copy-paste to fix this.
• Should we add consistency checks to GitHub Actions to avoid this in the future?

[schristley]

@javh this is what I was referring to here. I was trying to make the test data identical and saw differences. The R version is using NA which causes python to puke. The python version was okay for R except it fails because the R test is checking specific values, that could presumably be fixed by updating the checks in the R test.

[schristley]

• Should we add consistency checks to GitHub Actions to avoid this in the future?

PR #767 has those consistency checks.

[javh]

Ahhh... Thanks, @schristley. If we swap the NA for an empty string then that should work.