actionpack: Use an infinite sized queue in testing ActionController::Live #41609
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Fixes #31813
Problem Summary
ActionController::Live normally processes the request in another thread, however, a monkey patch in [ActionController::Live monkey patch in action_controller/test_case.rb] forces it to instead get processed in the same thread. Since the writes go to a
SizedQueue.new(10)
in ActionController::Live::Buffer, a test will deadlock if the controller makes more than 10 writes.Solution
The fix is similar to #31938, we use an infinitely sized
Queue.new
for testing. This PR just does this more cleanly by using an attribute on the class to configure the queue size, which allows both the test and normal behaviour to be tested cleanly.