Send new action notification email after create Proposal

After create a proposal send email to proposal's author with information text and new actions available.

spec/mailers/dashboard/mailer_spec.rb

@@ -0,0 +1,44 @@
+require "rails_helper"
+
+describe Dashboard::Mailer do
+
+  describe "#new_actions_notification_on_create" do
+
+    before do
+      ActionMailer::Base.deliveries.clear
+    end
+
+    let!(:proposal) { build(:proposal, :draft) }
+    let!(:action)   { create(:dashboard_action, :proposed_action, :active,
+                              day_offset: 0,
+                              published_proposal: true) }
+    let!(:resource) { create(:dashboard_action, :resource, :active,
+                              day_offset: 0,
+                              published_proposal: true) }
+
+    it "sends emails when detect new actions when create a proposal" do
+      action.update(published_proposal: false)
+      resource.update(published_proposal: false)
+      proposal.save
+
+      email = open_last_email
+
+      expect(email).to deliver_from("CONSUL <noreply@consul.dev>")
+      expect(email).to deliver_to(proposal.author)
+      expect(email).to have_subject("Your draft citizen proposal in Decide Madrid is created")
+      expect(email).to have_body_text("Hi #{proposal.author.name}!")
+      expect(email).to have_body_text("Your #{proposal.title} proposal has been successfully created.")
+      expect(email).to have_body_text("Take advantage that your proposal is not public yet and get ready to contact a lot of people.")
+      expect(email).to have_body_text(I18n.t("mailers.new_actions_notification_on_create.text_2", link: proposal_dashboard_url(proposal)).html_safe)
+      expect(email).to have_body_text("We know that creating a proposal with a hook and getting the necessary support can seem complicated. But dont worry because we are going to help you!")
+      expect(email).to have_body_text("You have a tool that will be your new best ally: The Citizen Proposals panel.")
+      expect(email).to have_body_text("Enter every day in the panel of your proposal to use the tips and resources that we will share with you.")
+      expect(email).to have_body_text("These tips, actions and resources will give you ideas and also practical solutions to get more support and a wider community. Dont forget them!")
+      expect(email).to have_body_text("As you gain more support, you will unlock new and better resources. At the moment, you have an e-mail template to send massively to all your contacts, a poster to print, among other features and rewards that you will discover. Dont stop adding support and we will not stop rewarding and helping you!")
+      expect(email).to have_body_text("You have #{Setting['months_to_archive_proposals']} months since you publish the proposal to get #{Setting['votes_for_proposal_success']} support and your proposal can become a reality. But the first days are the most important. It is a challenge. Get ready!")
+      expect(email).to have_body_text("And for you to start with all the motivation,")
+      expect(email).to have_body_text("here you have several resources and a whole list of tips that will come to you every day to prepare the broadcast!")
+      expect(email).to have_body_text("Go ahead, discover them!")
+    end
+  end
+end