workbox/infra/testing/server/routes/test-sw.js

/*
  Copyright 2019 Google LLC

  Use of this source code is governed by an MIT-style
  license that can be found in the LICENSE file or at
  https://opensource.org/licenses/MIT.
*/

const globby = require('globby');
const path = require('path');
const templateData = require('../template-data');

const match = '/test/:packageName/sw/';

async function handler(req, res) {
  // See https://github.com/GoogleChrome/workbox/pull/2744#issuecomment-774138051
  if (!req.path.endsWith('/')) {
    return res.redirect(req.path + '/');
  }

  const {packageName} = req.params;
  const testFilter = req.query.filter || '**/test-*.mjs';

  const testFiles =
    (await globby(`test/${packageName}/sw/${testFilter}`)) || [];
  const testModules = testFiles.map((file) => '/' + file);

  if (testFiles.length > 0) {
    templateData.assign({packageName, testModules, testFilter});

    res.set('Content-Type', 'text/html');

    // Since templates can change between tests without the URL changing,
    // we need to make sure the browser doesn't cache the response.
    res.set('Cache-Control', 'no-cache, no-store, must-revalidate');
    res.set('Expires', '0');

    const file = path.join(__dirname, '..', 'templates', 'test-sw.html.njk');
    res.render(file, templateData.get());
  } else {
    res.status(404).send(`No test files found for: ${testFilter}`);
  }
}

module.exports = {
  handler,
  match,
};