# File vendor/rails/actionpack/lib/action_controller/assertions/selector_assertions.rb, line 557
557: def assert_select_email(&block)
558: deliveries = ActionMailer::Base.deliveries
559: assert !deliveries.empty?, "No e-mail in delivery list"
560:
561: for delivery in deliveries
562: for part in delivery.parts
563: if part["Content-Type"].to_s =~ /^text\/html\W/
564: root = HTML::Document.new(part.body).root
565: assert_select root, ":root", &block
566: end
567: end
568: end
569: end