如何使用rspec测试条件ActiveRecord after_update回调？

require 'rails_helper'

RSpec.describe ModelName, type: :model do
  # ...
end

RSpec.describe ModelName, type: :model do
  describe 'after_update callback' do
    before(:each) do
      @model = ModelName.create(name: 'Example')
    end

    it 'should perform certain actions after update' do
      # 在这里编写测试逻辑，模拟更新操作并验证回调是否被触发
      @model.update(name: 'Updated Example')
      expect(@model.some_attribute).to eq('expected_value')
    end
  end
end

bundle exec rspec spec/models/model_name_spec.rb