Use Thread-Safe Dir.chdir Invocation in Tests
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Ruby starting in 3.0 is much more proactive about preventing you from attempting to invoke `Dir.chdir` in a thread-unsafe way: https://bugs.ruby-lang.org/issues/15661 Unfortunately, we currently do just that in our Eyes/UI tests; each of the two individual rake tasks internally invokes `Dir.chdir`, and we execute the tasks in parallel. Fortunately, there's a simple fix: https://coderscat.com/ruby-change-current-working-directory/
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nevermind, this is a locking solution which means we won't actually get the benefits of running tests in parallel this way |
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Follow-up to #50743, which updated us to Ruby 3.0.
Ruby starting in 3.0 is much more proactive about preventing you from attempting to invoke
Dir.chdirin a thread-unsafe way: https://bugs.ruby-lang.org/issues/15661Unfortunately, we currently do just that in our Eyes/UI tests; each of the two individual rake tasks internally invokes
Dir.chdir, and we execute the tasks in parallel. Fortunately, there's a simple fix: https://coderscat.com/ruby-change-current-working-directory/Testing story
Tested locally that without this change, running
bundle exec rake test:ui_allfails on Ruby 3.0 withconflicting chdir during another chdir block. With this change, we are able to successfully invoke both test tasks!