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`derive_regexp` was written with the assumption that we were run from a blank slate — that if the filter didn't match we might as well return it because it was nil. This isn't the case because minitest calls `run` on every runnable. Which is any subclass of Minitest::Runnable, such as ActiveSupport::TestCase, ActionDispatch::IntegrationTest as well as any inheriting from those. Thus after the first `run` we'd have put in a composite filter in `options[:filter]` making the next `run` create a linked list when it failed to match the regexp and put the composite filter as the head. Every runnable would accumulate more and more of the same filters, which effectively acted like an expanding whitelist and we ran tests from other runnables. Clog the accumulation by returning nil if there's no filter to derive a regexp from. Note: we pass a seed in the tests because Minitest shuffles the runnables to ensure the whitelist is expanded enough that the failure is triggered. |
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| railties.gemspec | ||
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| RDOC_MAIN.rdoc | ||
| README.rdoc | ||
= Railties -- Gluing the Engine to the Rails Railties is responsible for gluing all frameworks together. Overall, it: * handles the bootstrapping process for a Rails application; * manages the +rails+ command line interface; * and provides the Rails generators core. == Download The latest version of Railties can be installed with RubyGems: * gem install railties Source code can be downloaded as part of the Rails project on GitHub * https://github.com/rails/rails/tree/master/railties == License Railties is released under the MIT license: * http://www.opensource.org/licenses/MIT == Support API documentation is at * http://api.rubyonrails.org Bug reports can be filed for the Ruby on Rails project here: * https://github.com/rails/rails/issues Feature requests should be discussed on the rails-core mailing list here: * https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core