Uninitialized constant Dox::Formatter::Forwardable about dox HOT 6 CLOSED

@nelsonmfinda, @rafix02 which Ruby version and Rails version are you using?

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@melcha I'm using Rails 5.2.3 like @nelsonmfinda.

To check if it was a Ruby 2.6 problem I also tried versions 2.3.8 and 2.5.5, but got the same results. 🤔

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@rafix02, @nelsonmfinda

We've managed to reproduce this same issue with Ruby 2.6 / Rails 5.2.3 / rspec-rails 3.7.1
We've experienced similar, only worse, issue with Ruby 2.6 / Rails 5.2.3 / rspec-rails 3.8.2, where none of the dox's internal classes were initialized (Dox::Printers::DocumentPrinter, Dox::Printers::BasePrinter, ...)

Adding --require rails_helper to the .rspec file fixed the issue in both cases. It seems the dox was not loaded at all (because we require it in the rails_helper).

forwardable module is already required in the root dox module.

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Ruby: 2.6.0
Rails: 5.2.3

I solved this problem following the solution related by @rafix02. @melcha I want to contribute solving this issue.

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@melcha I see. I tried adding config.add_formatter Dox::Formatter to the RSpec.configure section of the rails_helper and it didn't complain either (rspec-rails 3.7.2). So apparently it's a new rspec/rspec-rails behaviour/bug with the --format flag?

Is running with --require rails_helper gonna be the official solution? If so, or even if just a workaround, I guess it'd be a good idea to add that info to the README, right? I could open a PR if you agree.

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@rafix02, it would seem so.

Yes, we should add a note about --require rails_helper to the README. Feel free to open a PR 🙂

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