Expand e2e test coverage

[swissspidy]

Images

• [x] Use REST API to verify smart thumbnail cropping
  • Can use Playwright's snapshot comparison for that
• [x] Bulk image optimization
• [x] Optimizing site logo / featured image / media-text / cover block
• [x] Import external media
• [x] Reject image optimization

Videos

• [x] Use REST API to verify the poster image is generated
• [x] Subtitle generation
• [x] Muting
• [ ] Optimize existing video

Audio

• [ ] Optimize existing file

PDFs

• [x] Use REST API to verify the poster image is generated

Media Recording

• [x] Video recording
• [x] Audio recording
• [x] Image recording
• [ ] Background blur
• [ ] Gif mode
• [ ] Video recording without audio
• [ ] Retry
• [ ] Pause & resume

Related:

• https://github.com/microsoft/playwright/issues/2973
• https://gist.github.com/KernelFolla/2647d7c644dce10913c592b1708f3a1e
• https://betterprogramming.pub/fake-video-capture-with-playwright-9314e6380755

Cross-origin isolation

• [ ] MutationObserver adding attributes everywhere (e.g. in welcome dialog or site logo)

Upload Requests

• [x] Test the whole flow

[swissspidy]

Thumbnails: add a few custom image sizes, verify all are generated and client & server sizes are more or less matching

add_action(
    'init',
    static function () {
        add_image_size( 'bottom-right', 220, 220, array( 'right', 'bottom' ) );
        add_image_size( 'custom-size', 100, 100, array( 'left', 'top' ) );
        add_image_size( 'ninek-height', 400, 9999 );
        add_image_size( 'ninek-width', 9999, 600 );
    }
);