notebook/spec/concerns/has_attributes_spec.rb

require 'rails_helper'

describe HasAttributes do
  let(:user) { create(:user) }
  let(:category) { create(:attribute_category, entity_type: 'universe', user: user) }
  let(:field) { create(:attribute_field, attribute_category: category, user: user, name: 'foo') }

  describe '.attribute_categories' do
    let(:categories) { Universe.attribute_categories(user) }

    context 'without a user' do
      let(:user) { nil }

      it 'returns an array of AttributeCategory' do
        expect(categories).to be_a_kind_of(Array)
        expect(categories.first).to be_a_kind_of(AttributeCategory)
      end
    end

    context 'with a user' do
      it 'returns an array of AttributeCategory' do
        expect(categories).to be_a_kind_of(ActiveRecord::AssociationRelation)
        expect(categories.first).to be_a_kind_of(AttributeCategory)
      end

      context 'with custom attributes' do
        before { field }

        it 'includes custom attribute categories' do
          expect(categories).to include(category)
        end
      end
    end
  end

  describe '#update_custom_attributes' do
    subject { create(:universe, user: user) }
    let(:values) { [{ name: field.name }] }

    before do
      subject.custom_attribute_values = values
    end

    context 'with attached custom attribute values' do
      it 'saves attribute field values' do
        expect {
          subject.save
        }.to change{Attribute.count}.from(0).to(1)
      end
    end
  end
end