Parallel Tests Alternatives

Parallel Tests reviews and mentions

• Helpful Settings When Running RSpec with parallel_tests
  1 project | dev.to | 2 Sep 2025

  In CI environments, we often run RSpec in parallel to speed things up. For that, there’s a gem called parallel_tests.

• Seeking help with moving a locally running, short-lived Docker container to CI / deployment process?
  1 project | /r/devops | 21 Nov 2022

  Thanks for that feedback. For some more context, the container is designed to run 40+ processes in parallel sending remote instructions to AWS Device Farm for testing, so I suspect that the RAM usage is expected in this case. If you have any recommendations on re-architecting the execution here I'm all ears.

• working with factory bot and active storage
  2 projects | /r/rails | 27 Oct 2022
• How to improve a test suit made with Rspec, Capybara, FactoryBot and Siteprism
  2 projects | /r/ruby | 18 Jun 2022
• Who's using Rails 7 test
  2 projects | /r/rails | 18 Jun 2022

  I know changing from RSpec to MiniTest requires some changes on how you organize the tests and how you think about writing them, but I found that I like MiniTest better after using it for more time, I think it goes straight to the point and it's better integrated (don't quote me on this, but I think minitest handles parallel tests better than RSpec in Rails app because that feature was added with mini test in mind, you would need to add an extra gem for rspec for that https://github.com/grosser/parallel_tests)

• How We Sped up Our CI Pipeline by Over 4x
  1 project | dev.to | 5 May 2022

  Several members of our team worked together to get the parallel_tests gem working for our codebase. Most of our tests were fine running in parallel, but we found enough that made assumptions about the order they would be run in that we had to do some fixing and rewriting. We kept this work in a feature branch, and kept chipping away at it until all the tests would pass.

• The Perils of Parallel Testing in Ruby on Rails
  2 projects | dev.to | 30 Mar 2022

  Let's get one thing out of the way. If you use RSpec rather than Minitest, you are out of luck. RSpec does not support Rails 6 built-in parallel testing. There is an ongoing discussion about changing that, but there hasn't been any significant progress for a while. If you want parallel tests with RSpec, your best bet is still using third-party gems such as grosser/parallel_tests.

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