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I would like to write a test for a method that receives an ElementRef. I don't find a way to mock the ElementRef, can anyone help? Thanks so much!

exampleService.service.ts:

I'm quite aware about the difference of toBe and toEqual in a test so I thought my setup would run smoothly but it still fails due to 'type problems'. This simplified setup still represents the problem:

My Component looks like (excerpt):

I'm using jest-mock-extended in my tests.

I would like to test the following code:

I have an axios code that calls an endpoint which returns 302 and a Location: header. I am writing a test which should evaluate method response and confirm the correct (HTTP 302) response as well as check Location: URL contents.

So I have a test code (Jest)

I'm trying to mock nanoid for my testing but it doesn't seem to be working.

my function

I am trying to start test with react-native/expo and typescript. I have created an app with the expo's basic typescript template.

To start testing, I followed the expo's documentation on testing with Jest. I have added jest-expo and react-test-renderer as dev dependencies, and have updated the package.json as per the docs:

This is my index.js

I am testing the create item API. Now, in order to create an item, the middleware checks the tokens into the cookies and if there is a session in the db. The thing is that even if the session gets created (I can see it in the db) from the first call to the login API the create item API is not able to "read" the session. Is it like jest is making 2 different requests (one for the login and the other for the create item) or that the session doesn't persist into the same request?

middleware looks like this:

I'm trying to spyOn an async function that's called within a submodule. This is something I've done many times before, so I can't work out why it's failing! Here's the (simplified) code:

routes.js: