Extracts the body of an email and runs nested assertions on it.
You must enable deliveries for this assertion to work, use:
ActionMailer::Base.perform_deliveries = true
assert_select "h1", "Email alert"
# File actionpack/lib/action_controller/assertions/selector_assertions.rb, line 501 def assert_select_email(&block) deliveries = ActionMailer::Base.deliveries assert !deliveries.empty?, "No e-mail in delivery list" for delivery in deliveries for part in delivery.parts if part["Content-Type"].to_s =~ /^text\/html\W/ root = HTML::Document.new(part.body).root assert_select root, ":root", &block end end end end