rails/actionmailer/test/log_subscriber_test.rb

# frozen_string_literal: true

require "abstract_unit"
require "mailers/base_mailer"
require "active_support/log_subscriber/test_helper"
require "action_mailer/log_subscriber"

class AMLogSubscriberTest < ActionMailer::TestCase
  include ActiveSupport::LogSubscriber::TestHelper

  def setup
    super
    ActionMailer::LogSubscriber.attach_to :action_mailer
  end

  class BogusDelivery
    def initialize(*)
    end

    def deliver!(mail)
      raise "failed"
    end
  end

  def set_logger(logger)
    ActionMailer::Base.logger = logger
  end

  def test_deliver_is_notified
    BaseMailer.welcome(message_id: "123@abc").deliver_now
    wait

    assert_equal(1, @logger.logged(:info).size)
    assert_match(/Delivered mail 123@abc/, @logger.logged(:info).first)

    assert_equal(2, @logger.logged(:debug).size)
    assert_match(/BaseMailer#welcome: processed outbound mail in [\d.]+ms/, @logger.logged(:debug).first)
    assert_match(/Welcome/, @logger.logged(:debug).second)
  ensure
    BaseMailer.deliveries.clear
  end

  def test_deliver_message_when_perform_deliveries_is_false
    BaseMailer.welcome_without_deliveries(message_id: "123@abc").deliver_now
    wait

    assert_equal(1, @logger.logged(:info).size)
    assert_match("Skipped delivery of mail 123@abc as `perform_deliveries` is false", @logger.logged(:info).first)

    assert_equal(2, @logger.logged(:debug).size)
    assert_match(/BaseMailer#welcome_without_deliveries: processed outbound mail in [\d.]+ms/, @logger.logged(:debug).first)
    assert_match("Welcome", @logger.logged(:debug).second)
  ensure
    BaseMailer.deliveries.clear
  end

  def test_deliver_message_when_exception_happened
    previous_delivery_method = BaseMailer.delivery_method
    BaseMailer.delivery_method = BogusDelivery

    assert_raises(RuntimeError) { BaseMailer.welcome(message_id: "123@abc").deliver_now }
    wait

    assert_equal(1, @logger.logged(:info).size)
    assert_equal('Failed delivery of mail 123@abc error_class=RuntimeError error_message="failed"', @logger.logged(:info).first)
  ensure
    BaseMailer.delivery_method = previous_delivery_method
  end
end