koel/resources/assets/js/components/ui/AlbumArtOverlay.spec.ts

import { waitFor } from '@testing-library/vue'
import { expect, it } from 'vitest'
import { albumStore } from '@/stores'
import UnitTestCase from '@/__tests__/UnitTestCase'
import AlbumArtOverlay from './AlbumArtOverlay.vue'

let albumId: number

new class extends UnitTestCase {
  private async renderComponent () {
    albumId = 42

    const rendered = this.render(AlbumArtOverlay, {
      props: {
        album: albumId
      }
    })

    await this.tick()

    return rendered
  }

  protected test () {
    it('fetches and displays the album thumbnail', async () => {
      const fetchMock = this.mock(albumStore, 'fetchThumbnail').mockResolvedValue('http://test/thumb.jpg')

      const { html } = await this.renderComponent()

      await waitFor(() => {
        expect(fetchMock).toHaveBeenCalledWith(albumId)
        expect(html()).toMatchSnapshot()
      })
    })

    it('displays nothing if fetching fails', async () => {
      const fetchMock = this.mock(albumStore, 'fetchThumbnail').mockRejectedValue(new Error())

      const { html } = await this.renderComponent()

      await waitFor(() => {
        expect(fetchMock).toHaveBeenCalledWith(albumId)
        expect(html()).toMatchSnapshot()
      })
    })
  }
}