markdown-it-external-anchor/test.js

Mark external, absolute links with necessary attributes

import { test } from 'node:test';
import MarkdownIt from 'markdown-it';
import mod from './index.js';

const md = MarkdownIt();

// Note: example.com is external, example.org is internal

md.use(mod, { domain: 'example.org' });

test('external link has added attributes', (t) => {
	const example = '[text](https://example.com)';
	const result = md.renderInline(example);
	t.assert.ok(result.includes(`rel="noopener noreferrer"`));
	t.assert.ok(result.includes(`target="_blank"`));
});

test('internal, relative link has no added attributes', (t) => {
	const example = '[text](/example)';
	const result = md.renderInline(example);
	t.assert.ok(!result.includes(`rel="noopener noreferrer"`));
	t.assert.ok(!result.includes(`target="_blank"`));
});

test('internal, absolute link has no added attributes', (t) => {
	const example = '[text](https://example.org)}';
	const result = md.renderInline(example);
	t.assert.ok(!result.includes(`rel="noopener noreferrer"`));
	t.assert.ok(!result.includes(`target="_blank"`));
});