Add `rake test` task to run tests over the 3 DBs we support #1044

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
Rubocop	9s
Tests (3.3.5, mysql)	3m 41s
Tests (3.3.5, postgres)	3m 43s
Tests (3.3.5, sqlite)	3m 31s
	11m 4s