Importing from $app/forms fails in tests

[Gil3co]

Describe the bug

When I import something from $app/forms, like enhance in one of my components, vitest tests fail.
Even when I try to mock $app/forms, it fails, without even reaching my mock.

Thank you!

Reproduction

https://github.com/Gil3co/app-forms-test-fail
To reproduce:

1. Clone the repo and run npm i.
2. Run npm run test and see the test fails.

Logs

This is the error:
Error: Failed to resolve import "$app/forms" from "src/routes/Component.svelte". Does the file exist?

System Info

System:
    OS: macOS 13.1
    CPU: (10) arm64 Apple M1 Pro
    Memory: 56.09 MB / 32.00 GB
    Shell: 5.8.1 - /bin/zsh
  Binaries:
    Node: 18.16.1 - ~/.nvm/versions/node/v18.16.1/bin/node
    npm: 9.7.2 - ~/.nvm/versions/node/v18.16.1/bin/npm
    bun: 1.0.8 - ~/.bun/bin/bun
  Browsers:
    Chrome: 119.0.6045.159
    Safari: 16.2
  npmPackages:
    @sveltejs/adapter-auto: ^2.0.0 => 2.1.1 
    @sveltejs/kit: ^1.27.4 => 1.27.6 
    svelte: ^4.0.5 => 4.2.7 
    vite: ^4.4.2 => 4.5.0

Severity

annoyance

Additional Information

This is very frustrating, since I can't write tests for my project.

[eltigerchino]

closed as duplicate of #1485

[Gil3co]

Thank you for taking the time to review my issue.
I've taken a look at #1485 and it is a duplicate of that.
Could you tell me if this is something you're taking a look at?