it('can visit subroutes', function(done) {
  visit('/');

  andThen(function() {
    expect(find('h2').text()).to.be.empty;
  });

  visit('/foo');

  andThen(function() {
    expect(find('h2').text()).to.be.equal('this is an acceptance test');
    done();
  });
});

it('can visit subroutes', async function() {
  await visit('/');

  expect(find('h2').text()).to.be.empty;

  await visit('/foo');

  expect(find('h2').text()).to.be.equal('this is an acceptance test');
});

andThen(function() {
  let foo = 1;
});
andThen(function() {
  let foo = 2;
});

// will become:
let foo = 1;
let foo = 2;