some minor improvements for the farm tests
some minor improvements for the farm tests

hugovk/coveragepy,nedbat/coveragepy,blueyed/coveragepy,hugovk/coveragepy,blueyed/coveragepy,hugovk/coveragepy,nedbat/coveragepy,hugovk/coveragepy,blueyed/coveragepy,hugovk/coveragepy,blueyed/coveragepy,nedbat/coveragepy,nedbat/coveragepy,nedbat/coveragepy,blueyed/coveragepy