ruby-on-rails - 应该使用 Rspec Gem 返回字符串 :Class"in belong_to test 的 "undefined method ` Reflect_on_association'

Question

在我的 Rails 应用程序中，我有模型 Request、Service 和 ServiceRequest

在我的 models.rb 文件中，我有:

request.rb:

class Request < ApplicationRecord

  validates_presence_of :userid, :supervisor, :status 

  has_many :servicerequests, dependent: :destroy
  accepts_nested_attributes_for :servicerequests

end

service.rb:

class Service < ApplicationRecord
  validates_presence_of :title, :responsible

  has_many :servicerequests, dependent: :destroy
end

servicerequest.rb:

class Servicerequest < ApplicationRecord
  belongs_to :request, optional: true
  belongs_to :service, optional: true
end

以及导致问题的规范servicerequest_spec.rb:

require "rails_helper"

describe "ServiceRequests", :type => :model do 
  it "is valid with valid attributes"
  it "is not valid without a userid"
  it "is not valid without a request_id"
  it "is not valid without a service_id"

  it { should belong_to(:request)}
  it { should belong_to(:service)}
end

这两行具体是:

it { should belong_to(:request)}
it { should belong_to(:service)}

我收到错误:

     NoMethodError:
   undefined method `reflect_on_association' for String:Class
 # /Users/criva/.rvm/gems/ruby-2.3.1@onboard/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_record/association_matchers/model_reflector.rb:21:in `reflect_on_association'
 # /Users/criva/.rvm/gems/ruby-2.3.1@onboard/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_record/association_matchers/model_reflector.rb:17:in `reflection'
 # /Users/criva/.rvm/gems/ruby-2.3.1@onboard/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_record/association_matcher.rb:825:in `reflection'
 # /Users/criva/.rvm/gems/ruby-2.3.1@onboard/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_record/association_matcher.rb:993:in `association_exists?'
 # /Users/criva/.rvm/gems/ruby-2.3.1@onboard/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_record/association_matcher.rb:926:in `matches?'
 # ./spec/models/servicerequest_spec.rb:10:in `block (2 levels) in <top (required)>'

我意识到应该还没有内置可选，但我希望找到一种方法来测试它，但仍将其保留在那里。

任何帮助都会有助于解决这个谜团。

我尝试过 it { should follow_to(:request).optional(true)} 和 it { should follow_to(:request).conditions(Optional: true)} 无济于事。

Answer 1

感谢@Aguardientico 指出，我应该把

描述ServiceRequest而不是描述“ServiceRequests”