Validating username error with Navalia LB

empty-username-navalia.js

// Register the work against a Navalia instance
// returning so the test can signal completetion:
it('should have a username input', () => {
  return navalia.run((chrome) => chrome.goto('http://localhost:3000/')
    .then(() => chrome.exists('[data-test="username"]'))
    .then((exists) => expect(exists).toEqual(true)));
});