We don’t include the postgres or Mysql drivers inside the virtual env for Keystone, so you need to explicitly install them in order to run the unit tests.

For Postgresql:

sudo yum install postgresql-devel
. .venv/bin/activate
pip install psycopg2

For MySQL

sudo yum install mysql-devel
. .venv/bin/activate
pip install MySQL-python

Now to run the unit tests, uncomment the driver line in tests/backend_sql.conf and run

./run_tests.sh -x test_sql_upgrade