Add EmailDelivery concern and test

This adds an additional method to the MemberMailer class. It's currently called #chaser and it sends...the chaser email.

In the next commit I'll call it from a Job, or maybe a Service that's called from a Job

Signed-off-by: jonathan.kerr <3410350+jonodrew@users.noreply.github.com>

Author: jonodrew

app/mailers/concerns/email_delivery.rb

@@ -0,0 +1,19 @@
+module EmailDelivery
+  extend ActiveSupport::Concern
+
+    private
+
+    def log_sent_email
+      member = params[:member]
+      return unless member
+
+      MemberEmailDelivery.create!(
+        member: member,
+        subject: mail.subject,
+        body: mail.body.to_s,
+        to: mail.to,
+        cc: mail.cc,
+        bcc: mail.bcc
+      )
+    end
+end

app/mailers/member_mailer.rb

@@ -1,5 +1,16 @@
 class MemberMailer < ApplicationMailer
   include EmailHeaderHelper
+  include EmailDelivery
+
+  after_action :log_sent_email, only: [:chaser]
+
+  def chaser
+    @member = params[:member]
+    subject = "It’s been a while, how are you doing? ♥️"
+    mail mail_args(@member, subject, 'hello@codebar.io', 'hello@codebar.io') do |format|
+      format.html {render 'three_month_chaser'}
+    end
+  end
 
   def welcome(member)
     if member.student?

app/models/member_email_delivery.rb

@@ -0,0 +1,3 @@
+class MemberEmailDelivery < ApplicationRecord
+  belongs_to :member, polymorphic: true, optional: true
+end

spec/mailers/member_mailer_spec.rb

@@ -115,4 +115,21 @@
       end.to change { ActionMailer::Base.deliveries.count }.by 1
     end
   end
+
+  describe "#chaser" do
+    it "logs the sent email" do
+      expect do
+        MemberMailer
+          .with(member: member)
+          .chaser
+          .deliver_now
+        end.to change(MemberEmailDelivery, :count).by(1)
+
+      log = MemberEmailDelivery.last
+
+      expect(log.member).to eq(member)
+      expect(log.subject).to eq("It’s been a while, how are you doing? ♥️")
+      expect(log.to).to eq([member.email])
+    end
+  end
 end