chore: mock localStorage in web tests

[timonrieger]

Test Fix

Fixed test environment issue where svelte-persisted-store was failing to access localStorage during test initialization, causing 20 test files to fail. The fix ensures localStorage is properly available in the test environment, resolving all localStorage-related errors and allowing all tests to run correctly.

Test results:

• Run with: cd web && pnpm test
• Before fix: See before.log - 20 failed test files due to localStorage errors
• After fix: See after.log - 35 passed test files, localStorage errors resolved

Note: The remaining failing tests in timeline-manager.svelte.spec.ts are unrelated to this fix and are out of scope for this PR. These appear to be pre-existing test issues.

[danieldietzler]

Thanks!

[danieldietzler]

The remaining failing test is definitely related to your PR since it targets localStorage specifically

[timonrieger]

The remaining failing test is definitely related to your PR since it targets localStorage specifically

What do you mean? As written above

Before fix: See before.log - 20 failed test files due to localStorage errors
After fix: See after.log - 35 passed test files, localStorage errors resolved

EDIT: you mean this one? https://github.com/immich-app/immich/actions/runs/20723239706/job/59492380262?pr=24663

[timonrieger]

hmm it seems like the test fixes have already been pushed to main. I cannot reproduce the test failures anymore I saw when opening the PR regarding localstorage
left: main | right: this PR branch

[danieldietzler]

EDIT: you mean this one? immich-app/immich/actions/runs/20723239706/job/59492380262?pr=24663

I do. And yes, I am not talking about those undefined values in the tests. I'm specifically talking about that one test that expect showAssetOwners to be true while it's actually false. That seems to be a regression from this PR

[timonrieger]

Could not figure out why, i assume some dependency update fixed the local storage issues. Closing this therefore, as this PR introduced on more test failure now.