rspec testing instance methods - ruby-on-rails

Question

How can I test these instance methods with rspec and factory?
factories
FactoryGirl.define do
factory :user do
sequence(:email) { |n| "example#{n}#gmail.com"
password 'example0000'
password_confirmation 'example0000'
new_chat_notification { Faker::Number.between(0, 10) }
new_other_notification { Faker::Number.between(0, 10) }
end
factory :notification do
notifiable_id { Faker::Number.between(1, 10) }
notifiable_type { Faker::Lorem.word }
action { Faker::Hipster.word }
checked_at { Faker::Time.between(DateTime.now - 2, DateTime.now - 3) }
association :sender, factory: :user
association :recipient, factory: :user
end
end
user.rb
#check and decrease chat notification that happens between 2 given users (max 1)
def decreasing_chat_notification_number(user)
notification = self.notifications.between_chat_recipient(user).unchecked.first
self.checking_and_decreasing_notification(notification) if notification.present?
end
#check and decrease task notifications that happens between 2 given users
def decreasing_task_notification_number(user)
self.notifications.task.between_other_recipient(user).unchecked.each do |notification|
self.checking_and_decreasing_notification(notification)
end
end
UPDATE
user.rb (here is the method that is called)
def checking_and_decreasing_notification(notification)
notification.check_notification
if notification.notifiable_type == "Message"
decrease_new_chat_notifications
decreased_chat_number_pusher
else
decrease_new_other_notifications
decreased_other_number_pusher
end
end
user_spec.rb
let(:sender) { create(:user) }
let(:user) { create(:user) }
let(:notification) { create(:notification, notifiable_type: "Message", recipient: user, sender: sender) }
it "decreasing_chat_notification_number" do
allow(user).to receive(:checking_and_decreasing_notification).with(notification)
user.decreasing_chat_notification_number(sender)
expect(user).to receive(:checking_and_decreasing_notification).with(notification)
end
error message:
1) User instance methods decreasing_chat_notification_number
Failure/Error: expect(user).to receive(:checking_and_decreasing_notification).with(notification)
(#<User:0x007fefcfd6ce20>).checking_and_decreasing_notification(#<Notification id: 1,
recipient_id: 1, created_at: "2016-04-14 19:47:36", updated_at: "2016-04-14 19:47:36",
sender_id: 2, checked_at: "2016-04-12 02:32:50", notifiable_id: 4, notifiable_type: "Message", action: "tilde">)
expected: 1 time with arguments: (#<Notification id: 1,
recipient_id: 1, created_at: "2016-04-14 19:47:36", updated_at: "2016-04-14 19:47:36",
sender_id: 2, checked_at: "2016-04-12 02:32:50", notifiable_id: 4, notifiable_type: "Message", action: "tilde">)
received: 0 times

Answer 1

(sidenote) You do not need self in your methods.
Take a look:
def decreasing_chat_notification_number(user)
notification = notifications.between_chat_recipient(user).unchecked.first
checking_and_decreasing_notification(notification) if notification.present?
end
describe '#decreasing_chat_notification_number' do
let(:notification) { create(:notification) }
let(:user) { create(:user) }
subject { create(:user) }
it 'your description' do
expect(subject).to receive(:checking_and_decreasing_notification).with(notification)
subject.decreasing_chat_notification_number(user)
end
end