nodebook/tests/examples.js

Node.js • Apprendre par la pratique. Familiarisez-vous avec JavaScript, Node.js et l'écosystème de modules npm. Apprenez à concevoir et à déployer des *applications web* et des *outils en ligne de commande*.

'use strict';

const test = require('blue-tape');
const tapSpec = require('tap-spec');
const {extname, posix, relative, join} = require('path');
const spawn = require('tape-spawn');
const glob = require('glob');
const {platform} = process;

test.createStream().pipe(tapSpec()).pipe(process.stdout);

const EXTRAS = require('./examples-config.js');
const examples = glob.sync(process.argv[3] || '*/examples/**/*.{mjs,js}');
const serverSide = (file) => /chapter-09/.test(file) === false;
const nodeModules = (file) => /node_modules/.test(file) === false;

const DEFAULT_CONFIG = {
  exitCode: 0,
  timeout: 5000,
};

examples
  .filter(serverSide)
  .filter(nodeModules)
  .forEach(FILE => {
    test(FILE, {timeout: 1000}, t => {
      const {[FILE]:config=DEFAULT_CONFIG} = EXTRAS;
      let nodeArgs = '';

      if (config.skip) {
        t.skip();
        return t.end();
      }

      // enable ECMAScript Module experimental support
      if (extname(FILE) === '.mjs') {
        nodeArgs += '--experimental-modules'
      }

      const {command='node', args:cmdArgs=''} = config;
      const cwd = join(__dirname, '..', FILE.split(posix.sep)[0]);
      const test_file = relative(cwd, FILE);

      const p = spawn(t, `${command} ${nodeArgs} ${test_file} ${cmdArgs}`, {cwd});
      p.exitCode(config.exitCode, `exit code = ${config.exitCode}`);

      if (config.timeout) {
        t.timeoutAfter(config.timeout * 2)
        p.timeout(config.timeout);
      }

      if (config.stdin) {
        p.stdin.end(config.stdin);
      }

      if (config.stdout) {
        // runs win32 specific tests or default platforms
        p.stdout.match(config[`${platform}stdout`] || config.stdout);
      }

      config.stderr
        ? p.stderr.match(new RegExp(config.stderr))
        : p.stderr.match(/^$/, 'stderr is empty');

      return p.end();
    });
  });