ActionMailer testing ArgumentError: wrong number of arguments (0 for 1)

Question

无法弄清楚为什么 bundle exec rake test 命令会失败，但是当我手动尝试发送电子邮件时，它可以正常工作并按应有的方式显示。

错误信息： ArgumentError：参数数量错误（0 代表 1）并突出显示 def stock_alert_email(stock) 来自 user_mailer.rb

user_mailer.rb

def stock_alert_email(stock)
    @stock = stock
    mail(to: 'email@email.org', subject: "Stock Alert! %s has reached %s" % [@stock[0].to_s, @stock[1].to_s])
end

user_mailer_test.rb

test "stock_alert_email" do
  email = UserMailer.stock_alert_email().deliver_now
  assert_not ActionMailer::Base.deliveries.empty?

  # Test the body of the sent email contains what we expect it to
  assert_equal ['email@email.org'], email.from
  assert_equal ['email@email.org'], email.to
  assert_equal "Stock Alert! %s has reached %s" % [@stock[0].to_s, @stock[1].to_s], email.subject
  assert_equal read_fixture('stock_alert_email').join, email.body.to_s
end

where I call the mail to send

UserMailer.stock_alert_email(@stock).deliver_now

当我在上面的 ^^ 行之前使用 binding.pry 时，我看到 @stock 是

[1] pry(main)> @stock
=> ["AAPL", 114.21]

Answer 1

问题出在这一行

email = UserMailer.stock_alert_email().deliver_now

您没有向 stock_alert_email 传递任何参数，而它需要一个参数。

ActionMailer testing ArgumentError: wrong number of arguments (0 for 1)

ActionMailer testing ArgumentError: wrong number of arguments (0 for 1)

rake

ruby-on-rails

actionmailer