flwang,

please try to remove directories named .venv .tox .testrepository and try again?

-- dims

By running ./run_tests.sh with the -N you're asking it to not run in a virtual environment, and that appears to bypass its installation of required libraries. If you're fine running in a virtual environment just drop the -N, or you can install the dependencies needed by running 'pip install -r tools/pip-requires' and 'pip install -r tools/test-requires'. That will install testrepository which is where the testr command comes from.

you can running 'pip install -r requirements.txt' and 'pip install -r test-requirements.txt' first, and then running './run_test -N' is OK