Visual and smell test, whatever passes that and is quite dry and you consider it smokable, but you suspect it may have a little mold, freeze it. That will stop the mold till you get around to using it. Too dry is better with mold. If some looked too moldy to smoke, I would water cure (even if already cured) thoroughly dry in a dehydrator and extract, then carbon and diatom filter the oil through a buchner filter. It should turn out fine, and I'm speaking of just a small amount of mold. If you find your curing weed 30% or more filled with mold, discard that. Don't mess with trying to maintain proper moisture, mold likes that.