Deliver parameterized mail with DeliveryJob

Deliver parameterized mail with `ActionMailer::DeliveryJob`
and remove `ActionMailer::Parameterized::DeliveryJob`.

actionmailer/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Deliver parameterized mail with `ActionMailer::DeliveryJob` and remove `ActionMailer::Parameterized::DeliveryJob`.
+
+    *Gannon McGibbon*
+
 *   Fix ActionMailer assertions not working when a Mail defines
     a custom delivery job class
 
@@ -8,17 +12,6 @@
 
     *Marcus Ilgner*
 
-*   Allow ActionMailer classes to configure the parameterized delivery job
-    Example:
-    ```
-    class MyMailer < ApplicationMailer
-      self.parameterized_delivery_job = MyCustomDeliveryJob
-      ...
-    end
-    ```
-
-    *Luke Pearce*
-
 *   `ActionDispatch::IntegrationTest` includes `ActionMailer::TestHelper` module by default.
 
     *Ricardo Díaz*

actionmailer/lib/action_mailer/base.rb

@@ -462,7 +462,6 @@ def _protected_ivars # :nodoc:
     helper ActionMailer::MailHelper
 
     class_attribute :delivery_job, default: ::ActionMailer::DeliveryJob
-    class_attribute :parameterized_delivery_job, default: ::ActionMailer::Parameterized::DeliveryJob
     class_attribute :default_params, default: {
       mime_version: "1.0",
       charset:      "UTF-8",

actionmailer/lib/action_mailer/delivery_job.rb

@@ -12,8 +12,9 @@ class DeliveryJob < ActiveJob::Base # :nodoc:
 
     rescue_from StandardError, with: :handle_exception_with_mailer_class
 
-    def perform(mailer, mail_method, delivery_method, *args) #:nodoc:
-      mailer.constantize.public_send(mail_method, *args).send(delivery_method)
+    def perform(mailer, mail_method, delivery_method, params, *args) #:nodoc:
+      mailer_class = params ? mailer.constantize.with(params) : mailer.constantize
+      mailer_class.public_send(mail_method, *args).send(delivery_method)
     end
 
     private

actionmailer/lib/action_mailer/message_delivery.rb

@@ -135,7 +135,7 @@ def enqueue_delivery(delivery_method, options = {})
             "#deliver_later, 2. only touch the message *within your mailer " \
             "method*, or 3. use a custom Active Job instead of #deliver_later."
         else
-          args = @mailer_class.name, @action.to_s, delivery_method.to_s, *@args
+          args = @mailer_class.name, @action.to_s, delivery_method.to_s, nil, *@args
           job = @mailer_class.delivery_job
           job.set(options).perform_later(*args)
         end

actionmailer/lib/action_mailer/parameterized.rb

@@ -140,16 +140,10 @@ def enqueue_delivery(delivery_method, options = {})
             super
           else
             args = @mailer_class.name, @action.to_s, delivery_method.to_s, @params, *@args
-            job = @mailer_class.parameterized_delivery_job
+            job = @mailer_class.delivery_job
             job.set(options).perform_later(*args)
           end
         end
     end
-
-    class DeliveryJob < ActionMailer::DeliveryJob # :nodoc:
-      def perform(mailer, mail_method, delivery_method, params, *args)
-        mailer.constantize.with(params).public_send(mail_method, *args).send(delivery_method)
-      end
-    end
   end
 end

actionmailer/lib/action_mailer/test_helper.rb

@@ -124,15 +124,12 @@ def assert_enqueued_emails(number, &block)
     #     end
     #   end
     def assert_enqueued_email_with(mailer, method, args: nil, queue: "mailers", &block)
-      if args.is_a? Hash
-        job = mailer.parameterized_delivery_job
-        args = [mailer.to_s, method.to_s, "deliver_now", args]
+      args = if args.is_a?(Hash)
+        [mailer.to_s, method.to_s, "deliver_now", args]
       else
-        job = mailer.delivery_job
-        args = [mailer.to_s, method.to_s, "deliver_now", *args]
+        [mailer.to_s, method.to_s, "deliver_now", nil, *args]
       end
-
-      assert_enqueued_with(job: job, args: args, queue: queue, &block)
+      assert_enqueued_with(job: mailer.delivery_job, args: args, queue: queue, &block)
     end
 
     # Asserts that no emails are enqueued for later delivery.
@@ -159,8 +156,7 @@ def assert_no_enqueued_emails(&block)
       def delivery_job_filter(job)
         job_class = job.is_a?(Hash) ? job.fetch(:job) : job.class
 
-        Base.descendants.map(&:delivery_job).include?(job_class) ||
-        Base.descendants.map(&:parameterized_delivery_job).include?(job_class)
+        Base.descendants.map(&:delivery_job).include?(job_class)
       end
   end
 end

actionmailer/test/message_delivery_test.rb

@@ -64,34 +64,34 @@ def test_should_enqueue_and_run_correctly_in_activejob
   end
 
   test "should enqueue the email with :deliver_now delivery method" do
-    assert_performed_with(job: ActionMailer::DeliveryJob, args: ["DelayedMailer", "test_message", "deliver_now", 1, 2, 3]) do
+    assert_performed_with(job: ActionMailer::DeliveryJob, args: ["DelayedMailer", "test_message", "deliver_now", nil, 1, 2, 3]) do
       @mail.deliver_later
     end
   end
 
   test "should enqueue the email with :deliver_now! delivery method" do
-    assert_performed_with(job: ActionMailer::DeliveryJob, args: ["DelayedMailer", "test_message", "deliver_now!", 1, 2, 3]) do
+    assert_performed_with(job: ActionMailer::DeliveryJob, args: ["DelayedMailer", "test_message", "deliver_now!", nil, 1, 2, 3]) do
       @mail.deliver_later!
     end
   end
 
   test "should enqueue a delivery with a delay" do
     travel_to Time.new(2004, 11, 24, 01, 04, 44) do
-      assert_performed_with(job: ActionMailer::DeliveryJob, at: Time.current + 10.minutes, args: ["DelayedMailer", "test_message", "deliver_now", 1, 2, 3]) do
+      assert_performed_with(job: ActionMailer::DeliveryJob, at: Time.current + 10.minutes, args: ["DelayedMailer", "test_message", "deliver_now", nil, 1, 2, 3]) do
         @mail.deliver_later wait: 10.minutes
       end
     end
   end
 
   test "should enqueue a delivery at a specific time" do
     later_time = Time.current + 1.hour
-    assert_performed_with(job: ActionMailer::DeliveryJob, at: later_time, args: ["DelayedMailer", "test_message", "deliver_now", 1, 2, 3]) do
+    assert_performed_with(job: ActionMailer::DeliveryJob, at: later_time, args: ["DelayedMailer", "test_message", "deliver_now", nil, 1, 2, 3]) do
       @mail.deliver_later wait_until: later_time
     end
   end
 
   test "should enqueue the job on the correct queue" do
-    assert_performed_with(job: ActionMailer::DeliveryJob, args: ["DelayedMailer", "test_message", "deliver_now", 1, 2, 3], queue: "test_queue") do
+    assert_performed_with(job: ActionMailer::DeliveryJob, args: ["DelayedMailer", "test_message", "deliver_now", nil, 1, 2, 3], queue: "test_queue") do
       @mail.deliver_later
     end
   end
@@ -100,7 +100,7 @@ def test_should_enqueue_and_run_correctly_in_activejob
     old_delivery_job = DelayedMailer.delivery_job
     DelayedMailer.delivery_job = DummyJob
 
-    assert_performed_with(job: DummyJob, args: ["DelayedMailer", "test_message", "deliver_now", 1, 2, 3]) do
+    assert_performed_with(job: DummyJob, args: ["DelayedMailer", "test_message", "deliver_now", nil, 1, 2, 3]) do
       @mail.deliver_later
     end
 
@@ -110,7 +110,7 @@ def test_should_enqueue_and_run_correctly_in_activejob
   class DummyJob < ActionMailer::DeliveryJob; end
 
   test "can override the queue when enqueuing mail" do
-    assert_performed_with(job: ActionMailer::DeliveryJob, args: ["DelayedMailer", "test_message", "deliver_now", 1, 2, 3], queue: "another_queue") do
+    assert_performed_with(job: ActionMailer::DeliveryJob, args: ["DelayedMailer", "test_message", "deliver_now", nil, 1, 2, 3], queue: "another_queue") do
       @mail.deliver_later(queue: :another_queue)
     end
   end

actionmailer/test/parameterized_test.rb

@@ -7,6 +7,9 @@
 class ParameterizedTest < ActiveSupport::TestCase
   include ActiveJob::TestHelper
 
+  class DummyDeliveryJob < ActionMailer::DeliveryJob
+  end
+
   setup do
     @previous_logger = ActiveJob::Base.logger
     ActiveJob::Base.logger = Logger.new(nil)
@@ -35,7 +38,13 @@ class ParameterizedTest < ActiveSupport::TestCase
   end
 
   test "enqueue the email with params" do
-    assert_performed_with(job: ActionMailer::Parameterized::DeliveryJob, args: ["ParamsMailer", "invitation", "deliver_now", { inviter: "david@basecamp.com", invitee: "jason@basecamp.com" } ]) do
+    args = [
+      "ParamsMailer",
+      "invitation",
+      "deliver_now",
+      { inviter: "david@basecamp.com", invitee: "jason@basecamp.com" },
+    ]
+    assert_performed_with(job: ActionMailer::DeliveryJob, args: args) do
       @mail.deliver_later
     end
   end
@@ -55,15 +64,26 @@ class ParameterizedTest < ActiveSupport::TestCase
   end
 
   test "should enqueue a parameterized request with the correct delivery job" do
-    old_delivery_job = ParamsMailer.parameterized_delivery_job
-    ParamsMailer.parameterized_delivery_job = ParameterizedDummyJob
-
-    assert_performed_with(job: ParameterizedDummyJob, args: ["ParamsMailer", "invitation", "deliver_now", { inviter: "david@basecamp.com", invitee: "jason@basecamp.com" } ]) do
-      @mail.deliver_later
+    args = [
+      "ParamsMailer",
+      "invitation",
+      "deliver_now",
+      { inviter: "david@basecamp.com", invitee: "jason@basecamp.com" },
+    ]
+
+    with_delivery_job DummyDeliveryJob do
+      assert_performed_with(job: DummyDeliveryJob, args: args) do
+        @mail.deliver_later
+      end
     end
-
-    ParamsMailer.parameterized_delivery_job = old_delivery_job
   end
 
-  class ParameterizedDummyJob < ActionMailer::Parameterized::DeliveryJob; end
+  private
+
+    def with_delivery_job(job)
+      old_delivery_job = ParamsMailer.delivery_job
+      ParamsMailer.delivery_job = job
+    ensure
+      ParamsMailer.delivery_job = old_delivery_job
+    end
 end

actionmailer/test/test_helper_test.rb

@@ -27,12 +27,8 @@ def test_parameter_args
 class CustomDeliveryJob < ActionMailer::DeliveryJob
 end
 
-class CustomParameterizedDeliveryJob < ActionMailer::Parameterized::DeliveryJob
-end
-
 class CustomDeliveryMailer < TestHelperMailer
   self.delivery_job = CustomDeliveryJob
-  self.parameterized_delivery_job = CustomParameterizedDeliveryJob
 end
 
 class TestHelperMailerTest < ActionMailer::TestCase