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import { expect } from 'chai';
import { parseHTML } from 'linkedom';
import { loadFixture } from '../../../astro/test/test-utils.js';
const FIXTURE_ROOT = new URL('./fixtures/mdx-frontmatter-injection/', import.meta.url);
describe('MDX frontmatter injection', () => {
let fixture;
before(async () => {
fixture = await loadFixture({
root: FIXTURE_ROOT,
});
await fixture.build();
});
it('remark supports custom vfile data - get title', async () => {
const frontmatterByPage = JSON.parse(await fixture.readFile('/glob.json'));
const titles = frontmatterByPage.map((frontmatter = {}) => frontmatter.title);
expect(titles).to.contain('Page 1');
expect(titles).to.contain('Page 2');
});
it('rehype supports custom vfile data - reading time', async () => {
const frontmatterByPage = JSON.parse(await fixture.readFile('/glob.json'));
const readingTimes = frontmatterByPage.map(
(frontmatter = {}) => frontmatter.injectedReadingTime
);
expect(readingTimes.length).to.be.greaterThan(0);
for (let readingTime of readingTimes) {
expect(readingTime).to.not.be.null;
expect(readingTime.text).match(/^\d+ min read/);
}
});
it('overrides injected frontmatter with user frontmatter', async () => {
const frontmatterByPage = JSON.parse(await fixture.readFile('/glob.json'));
const readingTimes = frontmatterByPage.map(
(frontmatter = {}) => frontmatter.injectedReadingTime?.text
);
const titles = frontmatterByPage.map((frontmatter = {}) => frontmatter.title);
expect(titles).to.contain('Overridden title');
expect(readingTimes).to.contain('1000 min read');
});
it('passes injected frontmatter to layouts', async () => {
const html1 = await fixture.readFile('/page-1/index.html');
const html2 = await fixture.readFile('/page-2/index.html');
const title1 = parseHTML(html1).document.querySelector('title');
const title2 = parseHTML(html2).document.querySelector('title');
expect(title1.innerHTML).to.equal('Page 1');
expect(title2.innerHTML).to.equal('Page 2');
});
});
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