Automatic system administration tools like Puppet are extremely powerful. Like any such weapon, they can accidentally cause a lot of damage very quickly. Here's how to protect yourself from at least one way of shooting yourself in the foot.

Django together with Haystack adds a powerful free-text search capability to your applications, and is widely used. This article explains how to write safe, reliable, repeatable tests for the search features, and avoid a common gotcha with indexing objects that shouldn't be indexed.