WeeklyOverviewWorker: add worker to send the week overview

app/workers/weekly_overview_worker.rb

@@ -0,0 +1,10 @@
+class WeeklyOverviewWorker
+  include Sidekiq::Worker
+
+  def perform(*args)
+    Gestionnaire.all
+      .map { |gestionnaire| [gestionnaire, gestionnaire.last_week_overview] }
+      .reject { |_, overview| overview.nil? }
+      .each { |gestionnaire, overview| GestionnaireMailer.last_week_overview(gestionnaire, overview).deliver_now }
+  end
+end

spec/workers/weekly_overview_worker_spec.rb

@@ -0,0 +1,30 @@
+require 'rails_helper'
+
+RSpec.describe WeeklyOverviewWorker, type: :worker do
+  describe 'perform' do
+    let!(:gestionnaire) { create(:gestionnaire) }
+    let(:overview) { double('overview') }
+    let(:mailer_double) { double('mailer', deliver_now: true) }
+
+    context 'with one gestionnaire with one overview' do
+      before :each do
+        expect_any_instance_of(Gestionnaire).to receive(:last_week_overview).and_return(overview)
+        allow(GestionnaireMailer).to receive(:last_week_overview).and_return(mailer_double)
+        WeeklyOverviewWorker.new.perform
+      end
+
+      it { expect(GestionnaireMailer).to have_received(:last_week_overview).with(gestionnaire, overview) }
+      it { expect(mailer_double).to have_received(:deliver_now) }
+    end
+
+    context 'with one gestionnaire with no overviews' do
+      before :each do
+        expect_any_instance_of(Gestionnaire).to receive(:last_week_overview).and_return(nil)
+        allow(GestionnaireMailer).to receive(:last_week_overview)
+        WeeklyOverviewWorker.new.perform
+      end
+
+      it { expect(GestionnaireMailer).not_to have_received(:last_week_overview) }
+    end
+  end
+end