Add compatibility for have_enqueued_mail (rails 7)

[mhenrixon]

1. ActionMailer::DeliveryJob does not exist anymore
2. ActionMailer::Parameterized::DeliveryJob

According to my research they have both been superseeded by ActionMailer::MailDeliveryJob

Closes #2531

[pirj]

I've started incorporating your fix, but failed to do so. I hope you'll find this part useful to get specs to green.

[mhenrixon]

Thank you, that's super helpful. I'll see about running the tests locally. Will try to finish it up in a bit.

[mhenrixon]

Seems the tests passed? You have a pretty complex setup but I remove the commit I used to test everything @pirj , let me know if anything else is needed.

[pirj]

Please don't be deceived by the green status of Rails: main builds in the status checks box. Those builds are marked as allow_failures: true and appear as green even when builds fail. I'm

https://github.com/rspec/rspec-rails/runs/4309351309?check_suite_focus=true

 Failures:

  1) HaveEnqueuedMail matchers have_enqueued_mail passes for mailer methods with default arguments
     Failure/Error:
       expect {
         TestMailer.email_with_optional_args('required').deliver_later
       }.to have_enqueued_mail(TestMailer, :email_with_optional_args).with('required')

       expected to enqueue TestMailer.email_with_optional_args exactly 1 time with ["required"], but enqueued 0
       Queued deliveries:
         TestMailer.email_with_optional_args with [{"args"=>["required"], "_aj_ruby2_keywords"=>["args"]}]

That's basically the same failure I choked on when integrated your fix.

[mhenrixon]

Oh man, you have a complex setup. I was indeed super happy that everything was (not passing) lol. Let me try and run the tests locally so that I can debug.

[pirj]

Have you had a chance to check the failure, @mhenrixon ?

[mhenrixon]

Have you had a chance to check the failure, @mhenrixon ?

I have tried and failed @pirj, I am moving my family in a few days and likely won't have time to sit down with this until after Christmas.

[pirj]

No worries, take your time and have a great holiday. I might have a chance to try to tweak the PR earlier.

[pirj]

Fixed in #2546. Thanks for your contribuion, @mhenrixon !