product_spec.rb

require "rails_helper"

describe Product do

  it 'cannot associate with categories from other accounts' do
    account = create :account
    product = build :product, account: account
    a = create :category, account: account
    b = create :category, account: build(:account)
    product.category_ids = [a.id, b.id]
    expect(product.categories).to eq [a]
  end

  # def category_ids=(ids)
  #   safe_ids = Category.where(account: account, id: ids).pluck(:id)
  #   super(safe_ids)
  # end

end