import needle from 'needle'; import assert from 'node:assert'; import crypto from 'node:crypto'; import { Worker as JestWorker } from 'jest-worker'; import { readFileSync } from 'fs'; async function test_pattern(str) { const worker = new JestWorker( new URL('./pathological_worker.js', import.meta.url), { numWorkers: 1, enableWorkerThreads: true } ); let result; const ac = new AbortController(); try { result = await Promise.race([ worker.render(str), new Promise((_, reject) => setTimeout(() => reject(new Error('Terminated (timeout exceeded)')), 3000).unref()) ]); } catch (e) { throw e; } finally { ac.abort(); await worker.end(); } return result; } describe('Pathological sequences speed', () => { it('Integrity check', async () => { assert.strictEqual( await test_pattern('foo'), '

foo

\n' ); }); // Ported from cmark, https://github.com/commonmark/cmark/blob/master/test/pathological_tests.py describe('Cmark', () => { it('verify original source crc', async () => { /* eslint-disable max-len */ const src = await needle('get', 'https://raw.githubusercontent.com/commonmark/cmark/master/test/pathological_tests.py'); const src_md5 = crypto.createHash('md5').update(src.body).digest('hex'); const tracked_md5 = JSON.parse(readFileSync(new URL('./pathological.json', import.meta.url))).md5; assert.strictEqual( src_md5, tracked_md5, 'CRC or cmark pathological tests hanged. Verify and update pathological.json' ); }); it('nested inlines', async () => { await test_pattern('*'.repeat(60000) + 'a' + '*'.repeat(60000)); }); it('nested strong emph', async () => { await test_pattern('*a **a '.repeat(5000) + 'b' + ' a** a*'.repeat(5000)); }); it('many emph closers with no openers', async () => { await test_pattern('a_ '.repeat(30000)); }); it('many emph openers with no closers', async () => { await test_pattern('_a '.repeat(30000)); }); it('many link closers with no openers', async () => { await test_pattern('a]'.repeat(10000)); }); it('many link openers with no closers', async () => { await test_pattern('[a'.repeat(10000)); }); it('mismatched openers and closers', async () => { await test_pattern('*a_ '.repeat(50000)); }); it('commonmark/cmark#389', async () => { await test_pattern('*a '.repeat(20000) + '_a*_ '.repeat(20000)); }); it('openers and closers multiple of 3', async () => { await test_pattern('a**b' + ('c* '.repeat(50000))); }); it('link openers and emph closers', async () => { await test_pattern('[ a_'.repeat(10000)); }); it('pattern [ (]( repeated', async () => { await test_pattern('[ (]('.repeat(40000)); }); it('pattern ![[]() repeated', async () => { await test_pattern('![[]()'.repeat(20000)); }); it('nested brackets', async () => { await test_pattern('['.repeat(20000) + 'a' + ']'.repeat(20000)); }); it('nested block quotes', async () => { await test_pattern('> '.repeat(50000) + 'a'); }); it('deeply nested lists', async () => { await test_pattern(Array(1000).fill(0).map(function (_, x) { return ' '.repeat(x) + '* a\n'; }).join('')); }); it('backticks', async () => { await test_pattern(Array(3000).fill(0).map(function (_, x) { return 'e' + '`'.repeat(x); }).join('')); }); it('unclosed links A', async () => { await test_pattern('[a]( { await test_pattern('[a](b'.repeat(30000)); }); it('unclosed