Then the optimized image should offer the "avif" format

Assert the optimized images of the page offer (or do not offer) an image format: <Picture formats={['avif', 'webp']} /> writes one <source type="image/..."> per format.

Examples

Then the optimized image should offer the "avif" format
And the optimized image should offer the "webp" format
But the optimized image should not offer the "jpeg" format
Then optimized image should offer the "webp" format
And the optimized image should offer the "avif" format

Pattern

Then(/^(?:the )?optimized image should( not)* offer the "([^"]*)?" format$/, …)

Part of @webship-js/astro-steps (github.com/webship/astro-steps), a step pack for Webship-js 2.0.x.