Is it possbile to call a function in nodejs during e2e tests?

[leilengma]

Hi, i am very new to cypress and still playing around with it.
In my case I need to test the pairing function from a website to an iot device.

So for me it is necessary to simulate a device in nodejs to send the correction information to the webservice when user clicks on "pair" button on the website.

I know there is a beforeEach hook, but it is already in the browser when this hook is getting called. I really need the node enviroment to support the azure-iot-device library.

So I would like to ask if there is a way to jump out of the browser and execute some code in node during the test execution?

My current idea is to start a server before test execution and provide apis to perform all necessary actions via calling apis.

Thanks a lot in advance!