ruby-on-rails - 如何在 ruby​​ on rails 中使用存根和模拟调用 post 方法

Question

我对 rspec 中的这种模拟和存根不熟悉。实际上在我的控制器中，我有一个动作方法邀请。我想在我的控制器中模拟/存根这个邀请方法......下面是我的代码：

when(/^I invite a subject with required attributes$/) do
  patient_enrollment = {subject_enrollment{
    country_code: "USA",
    subject_id: "Subj 100",
    subject_uuid: "23451"}}
  return_enrollment = {subject_enrollment{
    country_code: "USA",
    subject_id: "Subj 100",
    activation_code: "xcvbnh",
    subject_uuid: "23451"}}

patient_enrollment 是邀请操作（通过 Post 方法）接受的参数，我希望它返回 return_enrollment ...