module ActionMailer::TestCase::Behavior

def charset
  "UTF-8"
end

def encode(subject)
  Mail::Encodings.q_value_encode(subject, charset)
end

def initialize_test_deliveries
  set_delivery_method :test
  @old_perform_deliveries = ActionMailer::Base.perform_deliveries
  ActionMailer::Base.perform_deliveries = true
end

def read_fixture(action)
  IO.readlines(File.join(Rails.root, 'test', 'fixtures', self.class.mailer_class.name.underscore, action))
end

def restore_delivery_method
  ActionMailer::Base.delivery_method = @old_delivery_method
end

def restore_test_deliveries
  restore_delivery_method
  ActionMailer::Base.perform_deliveries = @old_perform_deliveries
  ActionMailer::Base.deliveries.clear
end

def set_delivery_method(method)
  @old_delivery_method = ActionMailer::Base.delivery_method
  ActionMailer::Base.delivery_method = method
end

def set_expected_mail
  @expected = Mail.new
  @expected.content_type ["text", "plain", { "charset" => charset }]
  @expected.mime_version = '1.0'
end