This repo is meant as an example of the behavior I encountered after upgrading to Rails 7.1.1 in my test suite. I've tried to find the minimal rails repo that replicates the issue.
The main issue I encountered is related to the after_create_commit hook in the User model that en-queues a job. When running the test suite (see user_test.rb) the job will occasionally (once every 3-4 runs) fail because the transaction around the test will have been rolled back before the job is able to execute. This results in an error like the following:
Error performing ExampleJob (Job ID: a5c9a3c0-d4ea-482b-bbc2-8e655694035f) from Async(default) in 4.5ms: ActiveJob::DeserializationError (Error while trying to deserialize arguments: Couldn't find User with 'id'=980190963)
In the main app I'm working on the result of this happening is that the test suite hangs indefinitely, likely waiting for the job to finish. This might be related to the rspec setup on that project. I was not able to replicate that in this repo, although solving the issue shown here, should solve the hanging.
- Clone the repo and install the dependencies by running
bundlein the root folder. - Open a terminal window and tail the test log:
tail -f log/test.log. - Run the test suite using
bin/rails test. You might have to try it a few times before you see the error in the window with the test logs.
The issue does not occur when including the ActiveJob::TestHelper in the test case. This (based on my understanding) sets the active_job.queue_adapter to :test.
Another solution is to set the active_job.queue_adapter to :test in the environments/test.rb configuration.
Additionally you can set ActiveJob::Base.queue_adapter.immediate = true, which tweaks the AsyncAdapter to perform all the jobs immediately.