Github Actions auto split of slow RSpec test file in parallel jobs for Ruby on Rails project. Consider the split · Divide and conquer · Enter split by test. How to run slow RSpec test files on Github Actions with parallel jobs by doing an auto split of the spec file by test examples.
Splitting your CI build jobs between multiple machines running in parallel is a great way to make the process fast, which results in more time for building features. Github Actions allows running parallel jobs easily. In a previous article, we explained how you can use Knapsack Pro to split your RSpec test files efficiently between parallel jobs on GitHub Actions. Today we’d like to show how to address the problem of slow test files negatively impacting the whole build times.
Imagine you have a project with 30 RSpec spec files. Each file contains multiple test examples (RSpec “
its”). Most of the files are fairly robust, fast unit tests. Let’s say there are also some slower files, like feature specs. Perhaps one such feature spec file takes approximately 5 minutes to execute.
When we run different spec files on different parallel machines, we strive for similar execution time on all of them. In a described scenario, even if we run 30 parallel jobs (each one running just one test file), the 5 minute feature spec would be a bottleneck of the whole build. 29 machines may finish their work in a matter of seconds, but the whole build won’t be complete until the 1 remaining node finishes executing its file.
How parallel Github Actions jobs can run your RSpec tests faster in Ruby on Rails application. Thanks to that each parallel job will be consuming a set of tests fetched from Knapsack Pro API Queue to ensure each parallel job finishes work at a similar time. Distributed tests and no bottleneck in parallel jobs (no slow job)
Github Actions config for Ruby on Rails tests in RSpec. Ruby on Rails project CI pipeline to Github Actions? You will learn how to configure the Rails app to run RSpec tests using Github Actions. How to use ruby/setup-ruby action to install Ruby gems. This way your database can run faster in a testing environment.
Ruby on Rails Minitest on Github Actions: Parallel Testing. For Ruby on Rails, How to run Ruby on Rails tests in Minitest on Github Actions? What to do if tests are slow? Tagged with ruby, rails, github, testing. Github Actions Build Matrix to Run Parallel Tests.
The demand for delivering quality software faster — or “Quality at Speed” — requires organizations to search for solutions in Agile, continuous integration (CI), and DevOps methodologies. Test automation is an essential part of these aspects.
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