Fixtures are a way of organizing data that you want to test against; in short, sample data. They come in 3 flavors: 1. YAML fixtures 2. CSV fixtures 3. Single-file fixtures YAML fixtures This type of fixture is in YAML format and the preferred default. YAML is a file format which describes data structures in a non-verbose, human-readable format. It ships with Ruby 1.8.1+. Unlike single-file fixtur