Why RSpec users should care about Rails system tests - rossta.net

For context, RSpec has supported high level testing through feature tests for many years. Like Cucumber, feature tests are designed to exercise application functionality through the user interface. There are many merits to feature tests as a way to document core business logic and catch regressions. There are drawbacks as well, including the fact that they can be very expensive, i.e., slow, to maintain and execute. I'm going to ignore this for now.