Rspec：測試是否在作業內的對象上調用方法？

Question

如果ended_at小於今天，我做了一個調用方法的工作。出於某種原因，即使我正在拋出一個綁定撬，它即將中斷並手動調用該方法，並且工作正常，我仍然會收到失敗。但是，如果我只是讓規範測試自行運行，我仍然會失敗。

我的工作：

class RemoveOldEventsFromAlgoliaJob < ApplicationJob 
    queue_as :default 

    def perform 

    old_events = Event.where("ended_at < ?", Date.today) 
    old_events.each do |e| 
     e.remove_from_algolia 
    end 
    end 
end 

我的方法：

def remove_from_algolia 
    index = Algolia::Index.new(@@ALGOLIA_INDEX_NAME) 
    index.delete_object(self.id) 
end 

我的規格測試：

require 'rails_helper' 

RSpec.describe RemoveOldEventsFromAlgoliaJob, type: :job do 
    it "will remove old events from the index" do 
    ActiveJob::Base.queue_adapter = :test 
    event = FactoryGirl.create(:event, title: "EXPIRED EVENT", ended_at: 1.day.ago) 

    RemoveOldEventsFromAlgoliaJob.perform_now 

    expect(event).to receive(:remove_from_algolia) 
    end 
end 

RSpec的輸出：

Failures: 

    1) d will remove old events from the index 
    Failure/Error: expect(event).to receive(:remove_from_algolia) 

     (#<Event id: 401, uuid: "6e9a6f08-c34d-45af-9f3c-870b28643809", organization_id: nil, event_type_id: nil, name: "cool-event", title: "Cool Event", description: "Rad thing that's gonna happen", platform_type: "ee", platform_id: "12345678", platform_url: "http://event.com/12345678", featured: false, capacity: 100, rsvp_count: nil, attendee_count: nil, status: "upcoming", started_at: "2017-10-21 03:00:39", ended_at: "2017-03-23 07:00:00", deleted_at: "2017-10-21 03:00:39", created_at: "2017-03-24 00:24:54", updated_at: "2017-03-24 00:24:54", location_line_1: nil, location_line_2: nil, location_city: nil, location_state: nil, location_zip: nil, location_country: nil>).remove_from_algolia(*(any args)) 
      expected: 1 time with any arguments 
      received: 0 times with any arguments 
    # ./spec/jobs/remove_old_events_from_algolia_job_spec.rb:10:in `block (2 levels) in <top (required)>' 

Finished in 0.8828 seconds (files took 7.12 seconds to load) 
1 example, 1 failure 

Failed examples: 

rspec ./spec/jobs/remove_old_events_from_algolia_job_spec.rb:4 # RemoveOldEventsFromAlgoliaJob will remove old events from the index 

Coverage report generated for RSpec to /workproject/coverage. 384/496 LOC (77.42%) covered. 

我可以規範測試過程中投入了binding.pry我的工作中，並調用該方法成功：

 4: def perform 
    5: 
    6: old_events = Event.where("ended_at < ?", Date.today) 
    7: old_events.each do |e| 
=> 8: binding.pry 
    9:  e.remove_from_algolia 
    10: end 
    11: end 

[1] pry(#<RemoveOldEventsFromAlgoliaJob>)> e.remove_from_algolia 
=> {"deletedAt"=>"2017-03-24T00:37:53.743Z", "taskID"=>206043962, "objectID"=>"409"} 
[2] pry(#<RemoveOldEventsFromAlgoliaJob>)> 

Answer 1

嘗試使用存根event，而不是一個真正的Event模型：

require 'rails_helper' 

RSpec.describe RemoveOldEventsFromAlgoliaJob, type: :job do 
    it "will remove old events from the index" do 
    ActiveJob::Base.queue_adapter = :test 
    event = double('event') 
    allow(Event).to receive(:where).and_return([event]) 
    expect(event).to receive(:remove_from_algolia) 

    RemoveOldEventsFromAlgoliaJob.perform_now 

    end 
end