adds result and visualization tests to a number of models, #320 · USEPA/useeior@bea22ec

R CMD check found ERRORs

Process completed with exit code 1.

Input 'save-always' has been deprecated with message: save-always does not work as intended and will be removed in a future release. A separate `actions/cache/restore` step should be used instead. See https://github.com/actions/cache/tree/main/save#always-save-cache for more details.