@ember/app-blueprint/tests/fixtures/tests-js-20/testem-dev.js

Blueprint for next generation of Ember apps

const httpProxy = require('http-proxy');

/*
  This can be installed as a testem middleware to make testem run against an
  arbitrary real webserver at targetURL.

  It allows testem to handle the well-known testem-specific paths and proxies
  everything else, while rewriting the testem-added prefix out of your
  "/tests/index.html" URL.
*/

function testemProxy(targetURL) {
  return function testemProxyHandler(app) {
    const proxy = httpProxy.createProxyServer({
      changeOrigin: true,
      ignorePath: true,
    });

    proxy.on('error', (err, _req, res) => {
      res && res.status && res.status(500).json(err);
    });

    app.all('*', (req, res, next) => {
      let url = req.url;
      if (url === '/testem.js' || url.startsWith('/testem/')) {
        return next();
      }
      let m = /^(\/\d+)\/tests\/index.html/.exec(url);
      if (m) {
        url = url.slice(m[1].length);
      }
      proxy.web(req, res, { target: targetURL + url });
    });
  };
}

module.exports = {
  test_page: 'tests/index.html?hidepassed',
  disable_watching: true,
  launch_in_ci: ['Chrome'],
  launch_in_dev: ['Chrome'],
  browser_start_timeout: 120,
  browser_args: {
  Chrome: {
    ci: [
      // --no-sandbox is needed when running Chrome inside a container
      process.env.CI ? '--no-sandbox' : null,
      '--headless',
      '--disable-dev-shm-usage',
      '--disable-software-rasterizer',
      '--mute-audio',
      '--remote-debugging-port=0',
      '--window-size=1440,900',
      ].filter(Boolean),
    },
  },
  middleware: [
    testemProxy('%APP_URL%')
  ],
};