Using Sinon to stub chained Mongoose calls

Question

I get how to stub Mongoose models (thanks to Stubbing a Mongoose model with Sinon), but I don\'t quite understand how to stub calls like:

myModel.findOne({\"         


        

Answer 1

Another way is to stub or spy the prototype functions of the created Query (using sinon):

const mongoose = require('mongoose');

sinon.spy(mongoose.Query.prototype, 'where');
sinon.spy(mongoose.Query.prototype, 'equals');
const query_result = [];
sinon.stub(mongoose.Query.prototype, 'exec').yieldsAsync(null, query_result);