class User < ActiveRecord::Base
end

RSpec.describe Kagetsu do
  after { User.delete_all }

  describe '.create_or_update' do
    context 'when user do not exist' do
      specify do
        expect { User.create_or_update(key: { name: 'kotoko' }, update_attributes: { email: 'kotoko@example.com' }) }
          .to change { User.count }
          .from(0)
          .to(1)
      end
    end

    context 'when user exist' do
      let!(:user) { User.create!(name: 'kotoko', email: 'old@example.com') }

      specify 'email is changed' do
        expect { User.create_or_update(key: { name: 'kotoko' }, update_attributes: { email: 'new@example.com' }) }
          .to change { user.reload.email }
          .from('old@example.com')
          .to('new@example.com')
      end
    end
  end
end