Ruby Tests Profiling Toolbox

TestProf is a collection of different tools to analyze your test suite performance.

Why does test suite performance matter? First of all, testing is a part of a developer’s feedback loop (see @searls talk) and, secondly, it is a part of a deployment cycle.

Simply speaking, slow tests waste your time making you less productive.

TestProf toolbox aims to help you identify bottlenecks in your test suite. It contains:

• Plug’n’Play integrations for general Ruby profilers (ruby-prof, stackprof)

• Factories usage analyzers and profilers

• ActiveSupport-backed profilers

• RSpec and minitest helpers to write faster tests

• RuboCop cops

• etc.

📑 Documentation

Who uses TestProf

• Discourse reduced ~27% of their test suite time
• Gitlab reduced 39% of their API tests time and improved factories usage
• CodeTriage
• Dev.to
• Open Project
• …and others

Resources

• TestProf: a good doctor for slow Ruby tests

• TestProf II: Factory therapy for your Ruby tests

• Paris.rb, 2018, “99 Problems of Slow Tests” talk [video, slides]

• BalkanRuby, 2018, “Take your slow tests to the doctor” talk [video], slides]

• RailsClub, Moscow, 2017, “Faster Tests” talk [video (RU), slides]

• RubyConfBy, 2017, “Run Test Run” talk [video, slides]

• Tips to improve speed of your test suite by Benoit Tigeot

Installation

Add test-prof gem to your application:

group :test do
  gem "test-prof", "~> 1.0"
end

And that’s it)

Supported Ruby versions:

• Ruby (MRI) >= 2.7.0 (NOTE: for Ruby 2.2 use TestProf < 0.7.0, Ruby 2.3 use TestProf ~> 0.7.0, Ruby 2.4 use TestProf <0.12.0, Ruby 2.5-2.6 use TestProf < 1.3)

• JRuby >= 9.3.0

Supported RSpec version (for RSpec features only): >= 3.5.0 (for older RSpec versions use TestProf < 0.8.0).

Usage

Check out our docs.

What’s next

Have an idea? Propose a feature request!

Already using TestProf? Share your story!

License

The gem is available as open source under the terms of the MIT License.