run_tests.py is pretty old at this point - it looks like the last edit was 3 years ago! The way that we run the tests now is via individual tests in the tools/odrive/tests folder. There’s also a script there called run_all_tests.sh that will run all of the tests.
If you want to run the full test suite and use the Teensy + RPi, you will need to connect them together as specified in the test-rig-rpi.yaml file. The lpf (low pass filter) connections I think can be skipped, I’ll have to check my setup.