PageObjects + non-angular page - how to join them?

问题:

I'm writing some protractor tests for our application. There is one place where is non-angular page as iframe in angular page.

Problem: I'm unable to map fields from non-angular page in Page Object object and use them in right time in my test specs.

Notes:

• I tried write Page Object as object (var DamagePage: {}) and as function (var DamagePage = function() {}) too. Both works bad in this situation.
• Calling fields from non-angular page in spec works obviously fine, but I want to have it in Page Object for correct project organization.
• I have set browser.driver.ignoreSynchronization = true;

Here is my spec>

'use strict';

var DamagePage = require('../../pages/case/CaseDamagePage.po.js');

describe('Damage selection - ', function() {

  var damagePage = new DamagePage();

  it('Switch to iFrame',function(){
      browser.driver.switchTo().frame('padIframe');
  });

  it('Open a zone', function() {
      browser.driver.findElement(by.id('30_0_79')).click();
      browser.sleep(2000);
  });

  it('Select a part', function () {
      browser.driver.findElement(by.id('32_0_201')).click();
      browser.sleep(3000);
  });

  it('Put I on it with 5 WU', function() {
      // Click I
      damagePage.leftMenuButtons.I.button.click();
  });

And here is my PageObject (actually as function)>

'use strict';

var CaseInterface = require('./CaseInterface.js');

var DamagePage = function() {

  // LEFT-SITE MENU BUTTONS
  this.leftMenuButtons = {
      I: {
          button: browser.driver.findElement(by.id('operation-button-I'))
      },
      E: {
          button: element(by.id('operation-button-E')),
          mutation: element(by.id('operation-button-mutation-E'))
      }
  };
};

module.exports = DamagePage;

In the spec all works fine until it comes to 'Put I on it with 5 WU' step. In this configuration, I got error immediately after protractor start:

C:\Users\xxx\AppData\Roaming\npm\node_modules\protractor\node_modules\selenium-webdriver\lib\atoms\error.js:108 var template = new Error(this.message); ^ NoSuchElementError: no such element: Unable to locate element: {"method":"id","selector":"operation-button-I"} (Session info: chrome=47.0.2526.106) (Driver info: chromedriver=2.19.346078 (6f1f0cde889532d48ce8242342d0b84f94b114a1),platform=Windows NT 6.1 SP1 x86_64) (WARNING: The server did not provide any stacktrace information) Command duration or timeout: 22 milliseconds For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html

Well, it is thanks to "browser.driver.findElement" syntax in Page Object. When I change it to "element", protractor starts correctly and run until 'Put I on it with 5 WU' step. Here it throws:

Failed: Error while waiting for Protractor to sync with the page: "angular could not be found on the window"

回答1:

I got error immediately after protractor start

This is because of where you initialize the Page Object - Protractor initializes your Page Object very early, when gathering the specs. You need to initialize the page object inside the beforeEach():

describe('Damage selection - ', function() {
    var damagePage;

    beforeEach(function () {
       damagePage = new DamagePage();
    });

    // ...
});

Or, directly inside the it():

it('Put I on it with 5 WU', function() {
    var damagePage = new DamagePage();

    // Click I
    damagePage.leftMenuButtons.I.button.click();
});