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import * as cheerio from 'cheerio';
import assert from 'node:assert/strict';
import { before, describe, it } from 'node:test';
import { loadFixture } from './test-utils.js';
// note: the hashes should be deterministic, but updating the file contents will change hashes
// be careful not to test that the HTML simply contains CSS, because it always will! filename and quanity matter here (bundling).
const EXPECTED_CSS = {
'/index.html': ['/_astro/'], // don’t match hashes, which change based on content
'/one/index.html': ['/_astro/'],
'/two/index.html': ['/_astro/'],
};
const UNEXPECTED_CSS = [
'/src/components/nav.css',
'../css/typography.css',
'../css/colors.css',
'../css/page-index.css',
'../css/page-one.css',
'../css/page-two.css',
];
describe('CSS Bundling', function () {
/** @type {import('./test-utils').Fixture} */
let fixture;
describe('defaults', () => {
before(async () => {
fixture = await loadFixture({
root: './fixtures/astro-css-bundling/',
// test suite was authored when inlineStylesheets defaulted to never
build: { inlineStylesheets: 'never' },
});
await fixture.build({ mode: 'production' });
});
it('Bundles CSS', async () => {
const builtCSS = new Set();
// for all HTML files…
for (const [filepath, css] of Object.entries(EXPECTED_CSS)) {
const html = await fixture.readFile(filepath);
const $ = cheerio.load(html);
// test 1: assert new bundled CSS is present
for (const href of css) {
const link = $(`link[rel="stylesheet"][href^="${href}"]`);
assert.equal(link.length >= 1, true);
const outHref = link.attr('href');
builtCSS.add(outHref.startsWith('../') ? outHref.slice(2) : outHref);
}
// test 2: assert old CSS was removed
for (const href of UNEXPECTED_CSS) {
const link = $(`link[rel="stylesheet"][href="${href}"]`);
assert.equal(link.length, 0);
}
// test 3: assert all bundled CSS was built and contains CSS
for (const url of builtCSS.keys()) {
const bundledCss = await fixture.readFile(url);
assert.ok(bundledCss);
}
}
});
it('there are 4 css files', async () => {
const dir = await fixture.readdir('/_astro');
assert.equal(dir.length, 4);
});
it('CSS includes hashes', async () => {
const [firstFound] = await fixture.readdir('/_astro');
assert.match(firstFound, /[a-z]+\.[\w-]{8}\.css/);
});
});
describe('using custom assetFileNames config', () => {
before(async () => {
fixture = await loadFixture({
root: './fixtures/astro-css-bundling/',
// test suite was authored when inlineStylesheets defaulted to never
build: { inlineStylesheets: 'never' },
vite: {
build: {
rollupOptions: {
output: {
assetFileNames: 'assets/[name][extname]',
entryFileNames: '[name].js',
},
},
},
},
});
await fixture.build({ mode: 'production' });
});
it('there are 4 css files', async () => {
const dir = await fixture.readdir('/assets');
assert.equal(dir.length, 4);
});
it('CSS does not include hashes', async () => {
const [firstFound] = await fixture.readdir('/assets');
assert.doesNotMatch(firstFound, /[a-z]+\.[\da-z]{8}\.css/);
});
it('there are 2 index named CSS files', async () => {
const dir = await fixture.readdir('/assets');
const indexNamedFiles = dir.filter((name) => name.startsWith('index'));
assert.equal(indexNamedFiles.length, 2);
});
});
});
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