JavaScript Cannot mock http.ServerResponse with Sinon

It looks like sinon.mock only stubs methods that are hasOwnProperty of the object you are passing it;

https://github.com/sinonjs/sinon/blob/master/lib/sinon/extend.js#L63

I'm thinking ServerResponse.writeHead is implemented on prototype. So that its methods are not directly mocked.

An option is to create a mock object that implements writeHead, write and end, spy on those methods and make assertions on it. This would be a much more manual process in creating the mocked object...

Answer:1

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