Tweedr uses nose as the test runner.
Tests can be disabled on Travis CI by putting "no_ci" into the test name.
There are three ways to run tests (assuming you have nose installed), all of which must be called from the package root directory.
nosetestspython setup.py testpython setup.py nosetests
Travis CI uses the last of these because it's the only one that automatically installs packages from tests_require in setup.py as well as allows setting command line options (it uses -e no_ci to exclude tests with "no_ci" in their name).