如何存根rspec中被测类内部实例化的类

class MyClass
  def initialize
    @dependency = Dependency.new
  end

  def do_something
    @dependency.do_something_else
  end
end

class Dependency
  def do_something_else
    # 实际的实现
  end
end

RSpec.describe MyClass do
  describe '#do_something' do
    it 'calls do_something_else on the dependency' do
      # 存根被测类内部实例化的类
      allow_any_instance_of(Dependency).to receive(:do_something_else)

      my_object = MyClass.new
      my_object.do_something

      # 断言被存根的方法被调用
      expect_any_instance_of(Dependency).to have_received(:do_something_else)
    end
  end
end