The tests are design to be run on a Raspberry Pi Pico.

1. Install the picozero package.
2. Install the micropython-unittest package.
3. Copy the test_picozero.py to the pico.
4. Run the test_picozero.py file.

If a test fails it is helpful to be able to see verbose error messages. To see error messages you need to modify the lib/unittest.py file on the pico.

Locate the following code in the run_class function:

# Uncomment to investigate failure in detail
#raise

Uncomment raise:

# Uncomment to investigate failure in detail
raise