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import assert from 'node:assert/strict';
import { after, before, describe, it } from 'node:test';
import * as cheerio from 'cheerio';
import { loadFixture } from './test-utils.js';
describe('Image', () => {
/** @type {import('./test-utils.js').Fixture} */
let fixture;
before(async () => {
fixture = await loadFixture({
root: './fixtures/image/',
});
await fixture.build();
});
it('build successful', async () => {
assert.ok(await fixture.readFile('../.vercel/output/static/index.html'));
});
it('has link to vercel in build with proper attributes', async () => {
const html = await fixture.readFile('../.vercel/output/static/index.html');
const $ = cheerio.load(html);
const img = $('#basic-image img');
assert.equal(img.attr('src').startsWith('/_vercel/image?url=_astr'), true);
assert.equal(img.attr('loading'), 'lazy');
assert.equal(img.attr('width'), '225');
});
it('has proper vercel config', async () => {
const vercelConfig = JSON.parse(await fixture.readFile('../.vercel/output/config.json'));
assert.deepEqual(vercelConfig.images, {
sizes: [640, 750, 828, 1080, 1200, 1920, 2048, 3840],
domains: ['astro.build'],
remotePatterns: [
{
protocol: 'https',
hostname: '**.amazonaws.com',
},
],
});
});
describe('dev', () => {
let devServer;
before(async () => {
devServer = await fixture.startDevServer();
});
after(async () => {
await devServer.stop();
});
it('has link to local image in dev with proper attributes', async () => {
const html = await fixture.fetch('/').then((res) => res.text());
const $ = cheerio.load(html);
const img = $('#basic-image img');
assert.equal(img.attr('src').startsWith('/_image?href='), true);
assert.equal(img.attr('loading'), 'lazy');
assert.equal(img.attr('width'), '225');
});
it('supports SVGs', async () => {
const html = await fixture.fetch('/').then((res) => res.text());
const $ = cheerio.load(html);
const img = $('#svg img');
const src = img.attr('src');
const res = await fixture.fetch(src);
assert.equal(res.status, 200);
assert.equal(res.headers.get('content-type'), 'image/svg+xml');
});
it('generates valid srcset for responsive images', async () => {
const html = await fixture.fetch('/').then((res) => res.text());
const $ = cheerio.load(html);
const img = $('#responsive img');
const widths = img
.attr('srcset')
.split(', ')
.map((entry) => entry.split(' ')[1]);
assert.deepEqual(widths, ['640w', '750w', '828w', '1080w', '1200w', '1920w']);
});
});
});
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