uninitialized constant ActionMailer::DeliveryJob with latest rails/master

[mhenrixon]

What Ruby, Rails and RSpec versions are you using?

Ruby version: 3.0.2
Rails version: 7.0.0 @ a0e14a8bfebf5f4bd4b66d1d468c844ab3e9d704
RSpec version: 5.0.2

Observed behaviour

6) Pitches::AcceptRequest#call updates pitch status
     Failure/Error:
       expect { call }.to change { User.count }.by(1)
         .and change { BuyerProfile.count }.by(1)
         .and change { pitch.reload.buyer_profile }.from(nil)
         .and change { prospect.reload.invitation_accepted_at }.from(nil)
         .and have_enqueued_email(PitchMailer, :request_accepted)

     NameError:
       uninitialized constant ActionMailer::DeliveryJob
       Did you mean?  ActionMailer::MailDeliveryJob
     # ./spec/services/pitches/accept_request_spec.rb:36:in `block (3 levels) in <main>'
     # -e:1:in `<main>'

Expected behaviour

Test was working before upgrading rails version

Can you provide an example app?

https://github.com/mhenrixon/rspec-rails-issue-2531 shows the error nicely

[mhenrixon]

Already fixed in #2516 actually no, that was not the same issue. I didn't have any issues with rspec-rails until the commit in rails master this morning.

[mhenrixon]

If I define the missing const

unless ActionMailer.const_defined?("DeliveryJob")
  ActionMailer.const_set(:DeliveryJob, ActionMailer::MailDeliveryJob)
end

I get other errors:

 4) Pitches::AcceptPitch#call when buyer has not connected with stripe updates pitch status
     Failure/Error:
       expect { call }.to change { pitch.reload.state }.to("buyer_accepted")
         .and have_enqueued_email(PitchMailer, :request_accepted)

     NameError:
       uninitialized constant ActionMailer::Parameterized::DeliveryJob
       Did you mean?  ActionMailer::DeliveryJob

So it does seem like something has changed and rspec-rails needs to be tweaked.

[pirj]

What if you replace in

rspec-rails/lib/rspec/rails/matchers/have_enqueued_mail.rb

Line 134 in d3e7b85

job[:job] <= ActionMailer::DeliveryJob

-           job[:job] <= ActionMailer::DeliveryJob
+           defined?(ActionMailer::DeliveryJob) && job[:job] <= ActionMailer::DeliveryJob

will it fix your error?

[mhenrixon]

@pirj then I get the other error I posted:

Failures:

  1) Article sends emails about published articles
     Failure/Error:
       expect { Article.create!(title: "Some title", slug: "some-title") }
         .to have_enqueued_email(ArticleMailer, :article_published)

     NameError:
       uninitialized constant ActionMailer::Parameterized::DeliveryJob
       Did you mean?  ActionMailer::MailDeliveryJob
     # ./spec/models/article_spec.rb:7:in `block (2 levels) in <main>'

[mhenrixon]

This seems to be the commit! rails/rails@ddc7fb6

[mhenrixon]

If I change:

# FROM
def parameterized_mail?(job)
  RSpec::Rails::FeatureCheck.has_action_mailer_parameterized? && job[:job] <= ActionMailer::Parameterized::DeliveryJob
end

# TO
def parameterized_mail?(job)
   RSpec::Rails::FeatureCheck.has_action_mailer_parameterized? && job[:job] <= ActionMailer::MailDeliveryJob
end

At least the error goes away.

[mhenrixon]

Added this in spec/support and it seems to work

# This patches rspec-rails to support rails 7.0
module RSpec
  module Rails
    module Matchers
      class HaveEnqueuedMail
        def legacy_mail?(job)
          defined?(ActionMailer::DeliveryJob) && job[:job] <= ActionMailer::DeliveryJob
        end

        def parameterized_mail?(job)
          RSpec::Rails::FeatureCheck.has_action_mailer_parameterized? && job[:job] <= ActionMailer::MailDeliveryJob
        end

        def unified_mail?(job)
          RSpec::Rails::FeatureCheck.has_action_mailer_unified_delivery? && job[:job] <= ActionMailer::MailDeliveryJob
        end
      end
    end
  end
end

[pirj]

Would you open a PR with a proper fix that would work with 5.2, 6.0, 6.1 and most recent 7.0?

[pirj]

You won't even have to write new specs for this code. Rails edge build already fails:

NameError:
  uninitialized constant ActionMailer::DeliveryJob
# ./spec/rspec/rails/matchers/have_enqueued_mail_spec.rb:25:in `<top (required)>'

[mhenrixon]

Perfect, I'll sort out a PR then! Thanks for following up