Must Have Gems

Code Quality

• Churn (Providing additional churn metrics

  over the original metric_fu churn)

• Pronto (Quick automated code review of

  your changes)

• Reek (Code smell detector for Ruby)

• Rubocop (A Ruby static code analyzer,

  based on the community Ruby style guide)

Error Handling

• Better Errors (Better error

  page for Rack apps)

TDD

• Guard (Guard automates various tasks by

  running custom rules whenever file or directories are modified)

• Seeing is Believing

  (Displays the results of every line of code in your file)