require "abstract_unit" require "action_controller" class AssetHostMailer < ActionMailer::Base def email_with_asset mail to: "test@localhost", subject: "testing email containing asset path while asset_host is set", from: "tester@example.com" end end class AssetHostTest < ActionMailer::TestCase def setup AssetHostMailer.configure do |c| c.asset_host = "http://www.example.com" end end def teardown restore_delivery_method end def test_asset_host_as_string mail = AssetHostMailer.email_with_asset assert_dom_equal 'Somelogo', mail.body.to_s.strip end def test_asset_host_as_one_argument_proc AssetHostMailer.config.asset_host = Proc.new { |source| if source.starts_with?("/images") "http://images.example.com" end } mail = AssetHostMailer.email_with_asset assert_dom_equal 'Somelogo', mail.body.to_s.strip end end