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ancsemi
d8928a9ae7
A word right after the opening ``` was always read as the language name, so ```chmod +x start.sh``` showed " +x start.sh" and dropped chmod (and ls, sudo, and so on). As in Discord, the first word is a language name only when the line ends right after it.
77 lines
2.9 KiB
JavaScript
77 lines
2.9 KiB
JavaScript
'use strict';
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/**
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* Fenced code blocks: a word after the opening fence is a language name only
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* when the line ends there. "```ls haven```" on one line is all code.
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*
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* node --test test/codeBlocks.test.js
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*/
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const assert = require('node:assert/strict');
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const fs = require('node:fs');
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const path = require('node:path');
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const test = require('node:test');
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const vm = require('node:vm');
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const ROOT = path.join(__dirname, '..');
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const MODULES = ['app-utilities.js', 'app-message-content.js', 'app-context.js'].map(name => ({
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name,
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source: fs.readFileSync(path.join(ROOT, 'public/js/modules', name), 'utf8'),
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}));
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function fakeElement() {
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let text = '';
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return {
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set textContent(v) { text = String(v); },
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get textContent() { return text; },
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get innerHTML() { return text.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>'); },
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};
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}
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function loadApp() {
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const sandbox = {
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document: { documentElement: { lang: 'en-US' }, querySelectorAll: () => [], createElement: () => fakeElement() },
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navigator: { languages: ['en-US'] },
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setInterval: () => 0, clearInterval: () => {},
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Intl, Date, Number, Math, JSON, String, Array, Object, RegExp, Error,
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t: (key) => key,
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console,
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};
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const methods = {};
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for (const mod of MODULES) {
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const context = vm.createContext({ module: { exports: {} }, exports: {}, ...sandbox });
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vm.runInContext(mod.source.replace(/^export default/m, 'module.exports ='), context, { filename: mod.name });
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Object.assign(methods, context.module.exports);
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}
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const app = Object.create(methods);
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app.user = { id: 1, username: 'tester' };
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app.channels = [];
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app.channelMembers = [];
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app._nicknames = {};
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return app;
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}
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const block = (html) => {
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const m = html.match(/<div class="code-block"([^>]*)>(.*?)<pre><code>([\s\S]*?)<\/code><\/pre><\/div>/);
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assert.ok(m, 'renders a code block: ' + html);
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return { lang: (m[1].match(/data-lang="([^"]*)"/) || [])[1] || '', code: m[3] };
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};
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test('a one-line block keeps its first word', () => {
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const app = loadApp();
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assert.deepEqual(block(app._formatContent('```chmod +x haven/start.sh```')), { lang: '', code: 'chmod +x haven/start.sh' });
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assert.deepEqual(block(app._formatContent('```ls haven```')), { lang: '', code: 'ls haven' });
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assert.deepEqual(block(app._formatContent('```haven```')), { lang: '', code: 'haven' });
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});
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test('a word alone on the opening line is the language', () => {
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const app = loadApp();
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assert.deepEqual(block(app._formatContent('```js\nconst a = 1;\n```')), { lang: 'js', code: 'const a = 1;' });
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assert.deepEqual(block(app._formatContent('```bash \nsudo ls\n```')), { lang: 'bash', code: 'sudo ls' });
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});
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test('a block that starts on the next line has no language and no leading blank line', () => {
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const app = loadApp();
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assert.deepEqual(block(app._formatContent('```\nsudo firewall-cmd --reload\n```')), { lang: '', code: 'sudo firewall-cmd --reload' });
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});
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