Frontend component and unit testing

[n30w]

Description

Implement more unit tests and new component tests with playwright for the frontend.

• [ ] Test ArticleBox components. Observe rendering on different data.
• [ ] accessibility checking.
  • Possibly use HAR files.
• [x] <meta> tests.

Links

• https://playwright.dev/docs/mock
• https://www.checklyhq.com/blog/integrating-accessibility-checks-in-playwright-tes/
• https://github.com/oekazuma/svelte-meta-tags/blob/main/tests/svelte-5/tests/profile.test.ts

Additional context

No response

[n30w]

Implementing component tests with:

https://svelte.dev/docs/svelte/testing

Creates this error when running vitest.

Svelte error: rune_outside_svelte
The `$state` rune is only available inside `.svelte` and `.svelte.js/ts` files