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import mdx from '@astrojs/mdx';
import { expect } from 'chai';
import { parseHTML } from 'linkedom';
import { loadFixture } from '../../../astro/test/test-utils.js';
import shikiTwoslash from 'remark-shiki-twoslash';
import rehypePrettyCode from 'rehype-pretty-code';
const FIXTURE_ROOT = new URL('./fixtures/mdx-syntax-hightlighting/', import.meta.url);
describe('MDX syntax highlighting', () => {
describe('shiki', () => {
it('works', async () => {
const fixture = await loadFixture({
root: FIXTURE_ROOT,
markdown: {
syntaxHighlight: 'shiki',
},
integrations: [mdx()],
});
await fixture.build();
const html = await fixture.readFile('/index.html');
const { document } = parseHTML(html);
const shikiCodeBlock = document.querySelector('pre.astro-code');
expect(shikiCodeBlock).to.not.be.null;
expect(shikiCodeBlock.getAttribute('style')).to.contain('background-color:#0d1117');
});
it('respects markdown.shikiConfig.theme', async () => {
const fixture = await loadFixture({
root: FIXTURE_ROOT,
markdown: {
syntaxHighlight: 'shiki',
shikiConfig: {
theme: 'dracula',
},
},
integrations: [mdx()],
});
await fixture.build();
const html = await fixture.readFile('/index.html');
const { document } = parseHTML(html);
const shikiCodeBlock = document.querySelector('pre.astro-code');
expect(shikiCodeBlock).to.not.be.null;
expect(shikiCodeBlock.getAttribute('style')).to.contain('background-color:#282A36');
});
});
describe('prism', () => {
it('works', async () => {
const fixture = await loadFixture({
root: FIXTURE_ROOT,
markdown: {
syntaxHighlight: 'prism',
},
integrations: [mdx()],
});
await fixture.build();
const html = await fixture.readFile('/index.html');
const { document } = parseHTML(html);
const prismCodeBlock = document.querySelector('pre.language-astro');
expect(prismCodeBlock).to.not.be.null;
});
});
it('supports custom highlighter - shiki-twoslash', async () => {
const fixture = await loadFixture({
root: FIXTURE_ROOT,
markdown: {
syntaxHighlight: false,
},
integrations: [
mdx({
remarkPlugins: [shikiTwoslash.default ?? shikiTwoslash],
}),
],
});
await fixture.build();
const html = await fixture.readFile('/index.html');
const { document } = parseHTML(html);
const twoslashCodeBlock = document.querySelector('pre.shiki');
expect(twoslashCodeBlock).to.not.be.null;
});
it('supports custom highlighter - rehype-pretty-code', async () => {
const fixture = await loadFixture({
root: FIXTURE_ROOT,
markdown: {
syntaxHighlight: false,
},
integrations: [
mdx({
rehypePlugins: [
[
rehypePrettyCode,
{
onVisitHighlightedLine(node) {
node.properties.style = 'background-color:#000000';
},
},
],
],
}),
],
});
await fixture.build();
const html = await fixture.readFile('/index.html');
expect(html).to.include('style="background-color:#000000"')
});
});
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