Add support for Ruby 3.1

[vsppedro]

🚀

[aried3r]

I believe the test failures you're seeing here are because only Rails 7.0.1 and above officially support Ruby 3.1, see: https://gist.github.com/yahonda/2776d8d7b6ea7045359f38c10449937b. 6.1 can work, but doesn't in this case (yet?), see: rails/rails#44090.

[technicalpickles]

https://gist.github.com/yahonda/2776d8d7b6ea7045359f38c10449937b

Does adding gem "psych", "~> 3.0" to appraisals help with the psych errors? It's odd to see this on the 6.1 branch

Rails 6.0.Z
You will likely get this error.
Psych::BadAlias: Unknown alias: default

We are on 6.1.4, but there are some (whatever is less than patch) revisions up to 6.1.4.4. Maybe those will help?

[vsppedro]

It will be necessary to update rubocop and fix all the offenses before continuing with this PR. Thank you so much for the help, @technicalpickles, and @aried3r! ❤️

I will work on that ASAP!

[vsppedro]

Finally! 🚀

There were two problems preventing this update:

• LoadError: cannot load such file -- net/smtp. To fix this one was necessary to update rails_6_1 and rails_6_0 with 'net-smtp', require: false.
• Unknown alias: default (Psych::BadAlias). To fix this one was necessary to update rails_6_1 and rails_6_0 with gem 'psych', '< 4'.

Rubocop is showing some bugs when running with Ruby 3.1:

Calling `DidYouMean::SPELL_CHECKERS.merge!(error_name => spell_checker)' has been deprecated. Please call `DidYouMean.correct_error(error_name, spell_checker)' instead.
Calling `DidYouMean::SPELL_CHECKERS.merge!(error_name => spell_checker)' has been deprecated. Please call `DidYouMean.correct_error(error_name, spell_checker)' instead.
Inspecting 274 files
.......................................................................................................................................................................................................An error occurred while Layout/BlockAlignment cop was inspecting /home/pedro/tempo-livre/collaborator/shoulda-matchers/spec/support/unit/i18n.rb:1:0.
To see the complete backtrace run rubocop -d.
....................An error occurred while Layout/BlockAlignment cop was inspecting /home/pedro/tempo-livre/collaborator/shoulda-matchers/spec/support/unit/shared_examples/ignoring_interference_by_writer.rb:1:0.
To see the complete backtrace run rubocop -d.
.An error occurred while Layout/BlockAlignment cop was inspecting /home/pedro/tempo-livre/collaborator/shoulda-matchers/spec/support/unit/shared_examples/numerical_submatcher.rb:1:0.
To see the complete backtrace run rubocop -d.
.An error occurred while Layout/BlockAlignment cop was inspecting /home/pedro/tempo-livre/collaborator/shoulda-matchers/spec/support/unit/shared_examples/set_session_or_flash.rb:1:0.
To see the complete backtrace run rubocop -d.
.....................................................

274 files inspected, no offenses detected

4 errors occurred:
An error occurred while Layout/BlockAlignment cop was inspecting /home/pedro/tempo-livre/collaborator/shoulda-matchers/spec/support/unit/i18n.rb:1:0.
An error occurred while Layout/BlockAlignment cop was inspecting /home/pedro/tempo-livre/collaborator/shoulda-matchers/spec/support/unit/shared_examples/ignoring_interference_by_writer.rb:1:0.
An error occurred while Layout/BlockAlignment cop was inspecting /home/pedro/tempo-livre/collaborator/shoulda-matchers/spec/support/unit/shared_examples/numerical_submatcher.rb:1:0.
An error occurred while Layout/BlockAlignment cop was inspecting /home/pedro/tempo-livre/collaborator/shoulda-matchers/spec/support/unit/shared_examples/set_session_or_flash.rb:1:0.
Errors are usually caused by RuboCop bugs.
Please, report your problems to RuboCop's issue tracker.
https://github.com/rubocop-hq/rubocop/issues

Mention the following information in the issue report:
1.0.0 (using Parser 2.7.2.0, rubocop-ast 1.1.0, running on ruby 3.1.2 x86_64-linux)

That's why I didn't change the ruby ​​version in the .ruby-verion and .tool- versions. I'll work on that in another PR. I think it's necessary to update rubocop.

@mcmire, what do you think?

[mcmire]

Yeah something is definitely fishy here. I feel like it's probably been a while since we've updated Rubocop so it sounds like updating could work.

[vsppedro]

I tried to update rubocop, but another error appeared. It looks like it won't be that simple. I will focus on creating a new release for shoulda-matchers adding support for ruby ​​3.1 and Rails 7. After that, I will update rubocop or create an issue in case someone else wants to make this contribution.

[voxik]

* [Unknown alias: default (Psych::BadAlias)](https://stackoverflow.com/questions/71191685/visit-psych-nodes-alias-unknown-alias-default-psychbadalias). To fix this one was necessary to update rails_6_1 and rails_6_0 with  gem 'psych', '< 4'.

I am just trying shoulda-matchers with Rails 7.0 and the workaround (given that we don't have Psych 3.x on Fedora) is:

sed -i '/def load_file/,/end/ s/::load_file/::unsafe_load_file/' spec/support/tests/database_configuration.rb

I think that the proper solution would be to adjust the #load_file to whatever Rails does on the same place.

[vsppedro]

@voxik, nice catch!

I think I'll have time to make some tests this weekend, thanks for sharing this.