I've successfully built counterpartyd and been getting some traction running it, but when I run 'counterpartyd tests' I get an error complaining about test_.py, which indeed doesn't seem to exist.
$ counterpartyd tests
======================================================== test session starts ========================================================
platform linux -- Python 3.4.0 -- pytest-2.5.1
ERROR: file not found: /home/tester/bitcoin-testnet-box/counterpartyd_build/dist/counterpartyd/test/test_.py