Testing Cronjobs in Rails - ruby-on-rails

Question

I have a cronjob, which moves users from one table to another according some deadline reached.
This cronjob works in rails console, but the test is red. If I test the function from this cronjob, the test is green. When I go inside the cronjob with binding.pry, it holds all necessary variables and does its work correctly.
What can be wrong?
Test:
describe 'try various methods' do
before(:each) do
Obparticipant::Participant.all.delete_all
#content = FactoryBot.create(:content, :with_department_ob, target_group: 'child', subject: 'Infos für Teilnehmer aus {ort}', message: '«{geschlecht} | Lieber | Liebe» {vorname}, du bist am {geburtsdatum} geboren.', notification_email: '{nachname}, {straße}, {plz}, {wohnland}, {bundesland}, {landesgruppe}')
germany = ::Physical::Base::Country.GERMAN
address = FactoryBot.create(:address, addressline_1: 'Sesamstraße', addressline_2: 'Kaufmannstraße', state: 'Bayern', city: 'München', zip: '80331', country_id: germany.id)
person = FactoryBot.create(:person, firstname: 'Pablo', lastname: 'Domingo', dateofbirth: Date.new(2001,2,3), gender: 'm', address_id: address.id)
#participant = FactoryBot.create(:participant, person_id: person.id)
#participant.open_todos.by_task(:account_data).each{ |t| t.complete! }
end
it 'should move recipients with a start_date of today back to content_recipients' do
person_two = FactoryBot.create(:person)
participant_two = FactoryBot.create(:participant, person_id: person_two.id, program_season_id: #participant.program_season_id)
participant_two.open_todos.by_task(:account_data).each{ |t| t.complete! }
filter = '{"program_season":"' + #participant.program_season_id.to_s + '"}'
#content.update_attributes(for_dynamic_groups: true, filter: filter, is_draft: false, delay_days: 5)
FactoryBot.create(:delayed_content_recipient, content_id: #content.id, recipient_id: participant_two.id, start_date: Date.today)
expect(#content.content_recipients.size).to eq(0)
Cronjobs.check_recipients # or #content.insert_open_recipients
expect(#content.delayed_content_recipients.size).to eq(1)
expect(#content.content_recipients.map(&:recipient_id).last).to eq(participant_two.id) # this expectation fails, when a cronjob is tested, and passes, when a function is tested
end`
Cronjob:
def self.check_recipients
contents = ::Content.published.current.by_for_dynamic_groups(true)
contents.each do |content|
content.insert_open_recipients
end
end
Function
def insert_open_recipients
search = ::SimpleParticipantSearch.new(JSON.parse(self.filter))
new_recipients = search.result.without_content(self.id)
new_recipients.each do |nr|
if self.delay_days.present?
unless self.delayed_content_recipients.map(&:recipient_id).include?(nr.id)
self.delayed_content_recipients.create(content_id: self.id, recipient_id: nr.id, start_date: Date.today + self.delay_days.days)
end
else
self.participant_recipients << nr unless errors_with_participant?(nr)
end
end
if self.delayed_content_recipients.any?
self.delayed_content_recipients.each do |recipient|
if new_recipients.map(&:id).include?(recipient.recipient_id)
if recipient.start_date == Date.today
self.delayed_content_recipients.delete(recipient)
self.participant_recipients << Obparticipant::Participant.find_by(id: recipient.recipient_id) unless errors_with_participant?(Obparticipant::Participant.find_by(id: recipient.recipient_id))
end
else
self.delayed_content_recipients.delete(recipient)
end
end
end
end

Answer 1

The solution I found is to test separately whether a Cronjob is run, and whether the function it calls works.
I wrote a stub for this Cronjob in the cronjobs controller rspec
it 'should call the correct method on the Cronjobs.check_recipients object' do
Cronjobs.stub(:check_recipients)
post :create, job: 'CheckRecipients'
expect(Cronjobs).to have_received(:check_recipients)
expect(response).to have_http_status(200)
end
and tested the function in the test i provided above.
it 'should move recipients with a start_date of today back to content_recipients' do
person_two = FactoryBot.create(:person)
participant_two = FactoryBot.create(:participant, person_id: person_two.id, program_season_id: #participant.program_season_id)
participant_two.open_todos.by_task(:account_data).each{ |t| t.complete! }
filter = '{"program_season":"' + #participant.program_season_id.to_s + '"}'
#content.update_attributes(for_dynamic_groups: true, filter: filter, is_draft: false, delay_days: 5)
FactoryBot.create(:delayed_content_recipient, content_id: #content.id, recipient_id: participant_two.id, start_date: Date.today)
expect(#content.content_recipients.size).to eq(0)
#content.insert_open_recipients
expect(#content.delayed_content_recipients.size).to eq(1)
expect(#content.content_recipients.map(&:recipient_id).last).to eq(participant_two.id)
end