こんなエラーになりました。

spec/models/address_purchase_spec.rb

% bundle exec rspec spec/models/address_purchase_spec.rb

An error occurred while loading ./spec/models/address_purchase_spec.rb.
Failure/Error:
  RSpec.describe AddressPurchase, type: :model do
    describe '商品購入テスト' do
      before do
        # @address_purchase = FactoryBot.build(:address_purchase)
      end
  
      it 'すべての値が正しく入力されていれば保存できること' do
      end
      it '郵便番号が空だと保存できないこと' do
        @address_purchase.postal_code = ''


NameError:
  uninitialized constant AddressPurchase
# ./spec/models/address_purchase_spec.rb:2:in `<top (required)>'
No examples found.

ちなみにrequire 'rails_helper'は

のrails_helper.rbを読みにいっています。