[SOLVED] Shoulda matchers - delegate

Shoulda matchers - delegate_method not working

I have a simple delegator class

class Service::Fs::Account < DelegateClass(Bank::Account)
  extend SingleForwardable

  def initialize(args={})
    @account = Bank::Account.new(args)
    super(@account)
  end

  def_delegators :"Bank::Account", :all, :create, :update
end

from my rails console, everything works fine

2.1.8 :002 > Service::Fs::Account.all
  Bank::Account Load (1.2ms)  SELECT "bank_accounts".* FROM "bank_accounts"
 => #<ActiveRecord::Relation []>

This my spec for Account delegator class

require 'spec_helper'

describe Service::Fs::Account do
  describe 'delegations' do
    it { should delegate_method(:all).to(Bank::Account) }
  end
end

tests are failing with the following error

 Failure/Error: it { should delegate_method(:all).to(Bank::Account) }
   Expected Service::Fs::Account to delegate #all to #Bank::Account object
   Method calls sent to Service::Fs::Account#Bank::Account: (none)
 # ./spec/models/service/fs/account_spec.rb:5:in `block (3 levels) in <top (required)>'

can anyone help me figure out why this test is failing? Thank you

Solution

Instead of using should matchers, you can test this behavior explicitly using RSpec mocks

it "delegates 'all' to Bank::Account" do
  expect(Bank::Account).to receive(:all)
  Service::Fs::Account.all
end