What’s the best way to test a gem that integrates with Rails?

1. combustion

   1 3 715 5.3 Ruby

   Simple, elegant testing for Rails Engines

   

   if you want the smallest possible dummy app, provided by a gem, see combustion. It does work well with appraisal for testing against multiple versions of Rails, which someone else mentioned.

2. Judoscale

   judoscale.com featured

   Save 47% on cloud hosting with autoscaling that just works. Judoscale integrates with Rails, Sidekiq, Solid Queue, and more to make autoscaling easy and reliable. Save big, and say goodbye to request timeouts and backed-up job queues.

   

3. good_job

   2 40 2,799 9.0 Ruby

   Multithreaded, Postgres-based, Active Job backend for Ruby on Rails.

   

   I just opened an issue on GoodJob about turning it into a mountable engine solely if you wanted to continue that discussion: https://github.com/bensheldon/good_job/issues/543

4. Appraisal

   3 3 1,289 7.5 Ruby

   A Ruby library for testing your library against different versions of dependencies.

   

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