1 files changed, 25 insertions, 0 deletions
diff --git a/spec/initializers/mailer_retries_spec.rb b/spec/initializers/mailer_retries_spec.rb
new file mode 100644
index 00000000000..c1e56784ad9
--- /dev/null
+++ b/spec/initializers/mailer_retries_spec.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Mailer retries' do
+  # We need to ensure that this runs through Sidekiq to take
+  # advantage of the middleware. There is a Rails bug that means we
+  # have to do some extra steps to make this happen:
+  # https://github.com/rails/rails/issues/37270#issuecomment-553927324
+  around do |example|
+    descendants = ActiveJob::Base.descendants + [ActiveJob::Base]
+    descendants.each(&:disable_test_adapter)
+    ActiveJob::Base.queue_adapter = :sidekiq
+
+    example.run
+
+    descendants.each { |a| a.queue_adapter = :test }
+  end
+
+  it 'sets retries for mailers to 3', quarantine: 'https://gitlab.com/gitlab-org/gitlab/-/issues/332645' do
+    DeviseMailer.user_admin_approval(create(:user)).deliver_later
+
+    expect(Sidekiq::Queues['mailers'].first).to include('retry' => 3)
+  end
+end