Now that we’ve got a functional persistence tier in place, the next step is to update our workflow to deploy the application and any new dependencies to production, right? No, of course not! We haven’t yet written the necessary tests to ensure a bug-free production build, so of course we’ll focus on that in this chapter. But, since our CI/CD pipeline executes on GitHub’s “runner” VMs, how can we test our persistence tier? Well, we could spin up an additional “test” database instance, but ...