Click not working on ion-button (e2e)

Inizia da package.json e test-config/protractor.conf.js, quindi esegui il comando e2e configurato sulla schermata di accesso e sul test #login-button mostrato. Conferma che il test può attivare il pulsante di invio e osservare il messaggio di errore previsto quando gli input sono vuoti.

I 'm developing an Ionic 3 PWA (using lazy load). The tests was based on this example. I'm trying to do e2e tests.

My initial test is try to fill a form and click in the submit button of a login screen. I can select the button, altought the click event doesn't works. It should show an error message if the input are empty.

My test:

import { browser, by, WebElementPromise } from 'protractor';

describe('App', () => {

  beforeEach(() => {
    
  });

  describe('default screen', () => {
    beforeEach(() => {
      browser.navigateTo('http://10.0.1.63:8100/#/login');
    });

    

    it('It must work', () => {
              browser.findElement(by.css('#login-button')).then(function (element) {                    
                element.click().then(function (clickResult) {
                      console.log(clickResult) // it logs null
                  }).catch(function (error) {
                      console.error('ERROr ON CLICK', error)
                  });
              }).catch(function (error: Error) {
                  console.error('ERROR ON FIND ELEMENT', error)
              });
    });
        
  })
});

Package.json:
{
  "name": "ionic-unit-testing-example",
  "author": "Ionic Framework",
  "homepage": "https://ionicframework.com/",
  "private": true,
  "scripts": {
    "clean": "ionic-app-scripts clean",
    "build": "ionic-app-scripts build",
    "ionic:build": "ionic-app-scripts build",
    "ionic:serve": "ionic-app-scripts serve",
    "test": "karma start ./test-config/karma.conf.js",
    "test-ci": "karma start ./test-config/karma.conf.js --single-run",
    "e2e": "webdriver-manager update --standalone false --gecko false; protractor ./test-config/protractor.conf.js"
  },
  "dependencies": {
    "@angular/common": "4.1.2",
    "@angular/compiler": "4.1.2",
    "@angular/compiler-cli": "4.1.2",
    "@angular/core": "4.1.2",
    "@angular/forms": "4.1.2",
    "@angular/http": "4.1.2",
    "@angular/platform-browser": "4.1.2",
    "@angular/platform-browser-dynamic": "4.1.2",
    "@ionic-native/core": "3.12.1",
    "@ionic-native/splash-screen": "3.12.1",
    "@ionic-native/status-bar": "3.12.1",
    "@ionic/storage": "2.0.1",
    "ionic-angular": "3.3.0",
    "ionicons": "3.0.0",
    "rxjs": "5.1.1",
    "sw-toolbox": "3.4.0",
    "zone.js": "0.8.11"
  },
  "devDependencies": {
    "@ionic/app-scripts": "1.3.7",
    "@ionic/cli-plugin-ionic-angular": "1.4.1",
    "@types/jasmine": "^2.5.41",
    "@types/node": "^7.0.8",
    "angular2-template-loader": "^0.6.2",
    "html-loader": "^0.4.5",
    "ionic": "3.7.0",
    "jasmine": "^2.5.3",
    "jasmine-spec-reporter": "^4.1.0",
    "karma": "^1.5.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-jasmine": "^1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "karma-sourcemap-loader": "^0.3.7",
    "karma-webpack": "^2.0.3",
    "null-loader": "^0.1.1",
    "protractor": "^5.1.1",
    "ts-loader": "^2.0.3",
    "ts-node": "^3.0.2",
    "typescript": "2.3.3"
  },
  "version": "0.0.1",
  "description": "An Ionic project"
}