And, I should add, setting them up generally (not just for OpenLDAP command line tools), means they catch non-OpenLDAP bugs... and that leads to non-OpenLDAP issues being reported to the OpenLDAP Project. We should avoid this for when 'make test' is simply used by deployers as a quick sanity tools. Developers, on the other hand, hopefully know what they are doing when they set such environmental variables... and they know how to manage this locally.
Best to avoid adding such to the public test system.
-- Kurt