Cucumber+EmailSpec+Rails3:为什么它说在实际工作时不发送电子邮件?

我在用 EmailSpec 用黄瓜测试邮件。我的测试失败了,说没有发送电子邮件,但是 我找不到我的代码有任何问题,所以我在生产中尝试过,并发送电子邮件 .

下面是失败的一步:

# ...
And I should see "You have requested for a condition report, and will be emailed one as soon as we are able to process your request." # features/step_definitions/web_steps.rb:107
And I should receive an email # features/step_definitions/email_steps.rb:51
  expected: 1,
       got: 0 (using ==) (RSpec::Expectations::ExpectationNotMetError)
  ./features/step_definitions/email_steps.rb:52:in `/^(?:I|they|"([^"]*?)") should receive (an|no|\d+) emails?$/'
  features/request_for_condition_reports.feature:18:in `And I should receive an email'
When I open the email                                                                                                                 # features/step_definitions/email_steps.rb:72
Then I should see "Ramon (ramon@email.com) wants a condition report for" in the email body 

下面是发送电子邮件的班级:

class ReportRequest < ActiveRecord::Base
  ...

  private

  def notify_admin
    Mailer.condition_report_request_to_admin(self).deliver
  end
end

我该怎么做才能修好这个测试?

谢谢!