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import mdx from '@astrojs/mdx';
import * as assert from 'node:assert/strict';
import { describe, it } from 'node:test';
import { parseHTML } from 'linkedom';
import rehypePrettyCode from 'rehype-pretty-code';
import shikiTwoslash from 'remark-shiki-twoslash';
import { loadFixture } from '../../../astro/test/test-utils.js';
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');
assert.notEqual(shikiCodeBlock, null);
assert.equal(shikiCodeBlock.getAttribute('style').includes('background-color:#24292e'), true);
});
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');
assert.notEqual(shikiCodeBlock, null);
assert.equal(shikiCodeBlock.getAttribute('style').includes('background-color:#282A36'), true);
});
});
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');
assert.notEqual(prismCodeBlock, null);
});
for (const extendMarkdownConfig of [true, false]) {
it(`respects syntaxHighlight when extendMarkdownConfig = ${extendMarkdownConfig}`, async () => {
const fixture = await loadFixture({
root: FIXTURE_ROOT,
markdown: {
syntaxHighlight: 'shiki',
},
integrations: [
mdx({
extendMarkdownConfig,
syntaxHighlight: 'prism',
}),
],
});
await fixture.build();
const html = await fixture.readFile('/index.html');
const { document } = parseHTML(html);
const shikiCodeBlock = document.querySelector('pre.astro-code');
assert.equal(shikiCodeBlock, null, 'Markdown config syntaxHighlight used unexpectedly');
const prismCodeBlock = document.querySelector('pre.language-astro');
assert.notEqual(prismCodeBlock, 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');
assert.notEqual(twoslashCodeBlock, 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');
assert.equal(html.includes('style="background-color:#000000"'), true);
});
});
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