Do not send repository check mails when they are disabled

app/workers/admin_email_worker.rb

@@ -3,6 +3,12 @@ class AdminEmailWorker
   include CronjobQueue
 
   def perform
+    send_repository_check_mail if Gitlab::CurrentSettings.repository_checks_enabled
+  end
+
+  private
+
+  def send_repository_check_mail
     repository_check_failed_count = Project.where(last_repository_check_failed: true).count
     return if repository_check_failed_count.zero?
 

spec/workers/admin_email_worker_spec.rb

+require 'spec_helper'
+
+describe AdminEmailWorker do
+  subject(:worker) { described_class.new }
+
+  describe '.perform' do
+    it 'does not attempt to send repository check mail when they are disabled' do
+      stub_application_setting(repository_checks_enabled: false)
+
+      expect(worker).not_to receive(:send_repository_check_mail)
+
+      worker.perform
+    end
+
+    context 'repository_checks enabled' do
+      before do
+        stub_application_setting(repository_checks_enabled: true)
+      end
+
+      it 'checks if repository check mail should be sent' do
+        expect(worker).to receive(:send_repository_check_mail)
+
+        worker.perform
+      end
+
+      it 'does not send mail when there are no failed repos' do
+        expect(RepositoryCheckMailer).not_to receive(:notify)
+
+        worker.perform
+      end
+
+      it 'send mail when there is a failed repo' do
+        create(:project, last_repository_check_failed: true, last_repository_check_at: Date.yesterday)
+
+        expect(RepositoryCheckMailer).to receive(:notify).and_return(spy)
+
+        worker.perform
+      end
+    end
+  end
+end