fake a method with sinon in javascript

// Let's say you have an object with a method you want to replace
const myObj = {
  myMethod: () => {
    return 'Original method result';
  }
};

// Now, in your test, you can replace myMethod with a fake function using sinon
const sinon = require('sinon');

// Create a fake function
const fakeMethod = sinon.fake.returns('Fake method result');

// Replace the original method with the fake one
sinon.replace(myObj, 'myMethod', fakeMethod);

// Now, when you call the method, it will return the result of the fake function
const result = myObj.myMethod(); // "Fake method result"

// Don't forget to restore the original method after your test
sinon.restore();
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