import { describe, expect, it } from 'vitest'
import { bodyImageIds } from '../bodyImageIds'

describe('bodyImageIds', () => {
	it('lists the ids of the images that carry data-image-id', () => {
		const body =
			'<p>a</p><img src="/a.jpg" alt="" data-image-id="1"><p>b</p><img data-image-id="4" src="/b.svg">'

		expect(bodyImageIds(body)).toEqual([1, 4])
	})

	it('ignores images without an id and non numeric ids', () => {
		const body =
			'<img src="/a.jpg"><img src="/b.jpg" data-image-id="abc"><img data-image-id="">'

		expect(bodyImageIds(body)).toEqual([])
	})

	it('returns nothing for a body without images', () => {
		expect(bodyImageIds('<p>Hello</p>')).toEqual([])
	})
})