Testing aasm state transitions with rspec

Question

I'm using aasm gem to handle state transitions in my project. I have a simple model that looks like this:

class TransferPostingBid < ActiveRecord::Base
  include AASM

  aasm :status do
    state :offered, initial: true
    state :wait_for_pap_confirmation
    state :confirmed_by_pap
    state :retracted_by_pap

    event :pap_choosed do
      transitions from: :offered, to: :wait_for_pap_confirmation
    end

    event :confirmed_by_pap do
      transitions from: :wait_for_pap_confirmation, to: :confirmed_by_pap
    end

    event :retracted_by_pap do
      transitions from: :wait_for_pap_confirmation, to: :retracted_by_pap
    end
  end
end

And I'm trying to test transitions with aasm built in rspec matchers:

require 'rails_helper'

describe TransferPostingBid, type: :model do
  describe 'state transitions' do
    let(:transfer_posting_bid) { TransferPostingBid.new }

    it 'has default state' do
      expect(transfer_posting_bid).to transition_from(:offered).to(:wait_for_pap_confirmation).on_event(:pap_choosed)
    end
  end
end

When I run this spec it returns me following error:

 AASM::UnknownStateMachineError:
   There is no state machine with the name 'default' defined in TransferPostingBid!

How can I fix this?

score 7 · Answer 1 · answered Dec 17 '16 at 15:42

7

You can try using the the #on method to specify which state machine you're testing:

transition_from(:offered).to(:wait_for_pap_confirmation).on_event(:pap_choosed).on(:status)

answered Dec 17 '16 at 15:42

Drenmi

8,492
4
42
51

Testing aasm state transitions with rspec

1 Answers1