text: const {expect} = require('chai');
  const forceSsl = require('./force_ssl');
  
  describe('The ForceSSL Handler', () => {
    it('does nothing if no headers are set', (done) => {
      const req = {headers: {}};
      const res = {
        redirect: () => {
          throw new Error('Did not expect redirect');
        },
      };
      const next = () => done();
      forceSsl(req, res, next);
    });
  
    it('adds https if x-forwarded-proto header is present', (done) => {
      const req = {
        url: '',
        headers: {
          'x-forwarded-proto': 'http',
          host: 'localhost:9000',
        },
      };
      const res = {
        redirect: (url) => {
          expect(url.indexOf('https')).to.equal(0);
          done();
        },
      };
      const next = () => {
        throw new Error('did not expect next to be called');
      };
      forceSsl(req, res, next);
    });
  });
  