Capybara tasks can be double-clicked by using Selenium-backed double_click on the matched element; plain Capybara alone does not handle double-clicks.

validate_uniqueness_of in Shoulda needs an existing record; without it, RSpec can raise “Could not find first Keyword” during uniqueness checks.

Staging sites can be kept out of Google with robots.txt while avoiding a forgotten block on launch by serving a separate exclude file on staging only.

Using the same Rails session secret in staging and production can let a cookie from one environment authenticate in another. Separate secrets per environment reduce session hijacking risk.

Our gem Mail Magnet allows you to override e-mail recipients in ActionMailer so all mails go to a given address.

This is useful for staging environments where you want to test production-like mail delivery without sending e-mails to real users.