ruby – 如何检查对rspec中构造函数调用的方法的调用？

class MyClass
  def initialize(count)
    count.times{self.do_something}
  end

  def do_something
    # whatever
  end

end

我想说点什么

n = 4
MyClass.new(n).should_receive(:do_something).exactly(n).times
n = 2
MyClass.new(n).should_receive(:do_something).exactly(n).times

但是失败是因为在do_receive被附加到它之前调用了do_something(至少我认为这就是原因).

expected: 4 times with any arguments
received: 0 times with any arguments

或者从构造函数中调用这样的东西是错误的,我应该重构？

此外,这个问题与此非常相似：

rspec: How to stub an instance method called by constructor?

但是我希望在过去的5年里,答案比设置短线新呼叫的手动实现更好.