mailer.deliver_now无法在测试环境中序列化对象

Question

在rails6中，我们通过参数化邮件从Mailer.deliver_now切换到Mailer.deliver_later。

#environments/test.rb
config.action_mailer.delivery_method = :test
config.active_job.queue_adapter = :inline # is this neccessary?


# model.rb
def send_mail 
    WithdrawalMailer.with(address: self).confirm_address.deliver_later
end

在开发中，一切都很好，但是在测试环境中，这失败了，因为他无法序列化对象。

 1) Asset withdrawals .process_withdrawals! starts the process
     Failure/Error: WithdrawalMailer.with(address: self).confirm_address.deliver_later
     ActiveJob::SerializationError:
     Unable to serialize Wallet::WithdrawalAddress without an id. (Maybe you forgot to call save?)
     # ./app/models/wallet/withdrawal_address.rb:60:in `send_confirmation_email'

如何使.deliver_later在测试环境中工作？

Answer 1

在after_commit中而不是在before_create中发送邮件的呼叫，它可以工作。