Unit tests

`CI PR #5:` Complete the transition from `pyre` to `pyright` #655

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
test (3.10, ubuntu-22.04)	3m 28s
test (3.11, ubuntu-22.04)	1m 28s
finish-coverage-upload	3s
	4m 59s