Expand distance table unit tests to cover more BC.

[ye-luo]

Proposed changes

More unit tests.

What type(s) of changes does this code introduce?

• Testing changes (e.g. new unit/integration/performance tests)

Does this introduce a breaking change?

• No

What systems has this change been tested on?

epyc-server

Checklist

• Yes. This PR is up to date with current the current state of 'develop'
• Yes. Code added or changed in the PR has been clang-formatted
• Yes. This PR adds tests to cover any new code, or to catch a bug that is being fixed

[ye-luo]

Test this please

[PDoakORNL]

Always good to get more unit tests.