feat: Display sent status of emails in email channel (#3125)

spec/workers/email_reply_worker_spec.rb

@@ -0,0 +1,44 @@
+require 'rails_helper'
+
+RSpec.describe EmailReplyWorker, type: :worker do
+  let(:account) { create(:account) }
+  let(:channel) { create(:channel_email, account: account) }
+  let(:message) { create(:message, message_type: :outgoing, inbox: channel.inbox, account: account) }
+  let(:private_message) { create(:message, private: true, message_type: :outgoing, inbox: channel.inbox, account: account) }
+  let(:incoming_message) { create(:message, message_type: :incoming, inbox: channel.inbox, account: account) }
+  let(:template_message) { create(:message, message_type: :template, content_type: :input_csat, inbox: channel.inbox, account: account) }
+  let(:mailer) { double }
+  let(:mailer_action) { double }
+
+  describe '#perform' do
+    before do
+      allow(ConversationReplyMailer).to receive(:with).and_return(mailer)
+      allow(mailer).to receive(:email_reply).and_return(mailer_action)
+      allow(mailer_action).to receive(:deliver_later).and_return(true)
+    end
+
+    it 'calls mailer action with message' do
+      described_class.new.perform(message.id)
+      expect(mailer).to have_received(:email_reply).with(message)
+      expect(mailer_action).to have_received(:deliver_later)
+    end
+
+    it 'does not call mailer action with a private message' do
+      described_class.new.perform(private_message.id)
+      expect(mailer).not_to have_received(:email_reply)
+      expect(mailer_action).not_to have_received(:deliver_later)
+    end
+
+    it 'calls mailer action with a CSAT message' do
+      described_class.new.perform(template_message.id)
+      expect(mailer).to have_received(:email_reply).with(template_message)
+      expect(mailer_action).to have_received(:deliver_later)
+    end
+
+    it 'does not call mailer action with an incoming message' do
+      described_class.new.perform(incoming_message.id)
+      expect(mailer).not_to have_received(:email_reply)
+      expect(mailer_action).not_to have_received(:deliver_later)
+    end
+  end
+end