Ember Page Objects

Represent the screens of your web app as a series of objects. This ember-cli addon ease the construction of these objects on your acceptance tests.

What is a Page Object?

An excerpt from the Selenium Wiki

Within your web app's UI there are areas that your tests interact with. A Page Object simply models these as objects within the test code. This reduces the amount of duplicated code and means that if the UI changes, the fix need only be applied in one place.

The pattern was first introduced by the Selenium

You can find more information about this design pattern here:

• Page Objects - Selenium wiki
• PageObject - Martin Fowler

Usage

Install the npm package on your ember-cli project

npm install --save-dev ember-cli-page-object

then import the page-object helper

import PO from '../page-object';

The previous example assumes that your test file is one level deep under tests/ folder. i.e. tests/acceptance/my-acceptance-test.js.

Then you can start building your page objects as follows:

var login = PO.build({
  visit:        PO.visitable('/login'),
  userName:     PO.fillable('#username'),
  password:     PO.fillable('#password'),
  submit:       PO.clickable('#login'),
  errorMessage: PO.text('.message')
});

test('Invalid log in', function(assert) {
  login
    .visit()
    .userName('user@example.com')
    .password('secret')
    .submit();

  andThen(function() {
    assert.equal(login.errorMessage(), 'Invalid credentials!');
  });
});

Built-in support for defining tables and collections:

<table id="users">
  <tr>
    <td>Jane</td>
    <td>Doe</td>
  </tr>
  <tr>
    <td>John</td>
    <td>Doe</td>
  </tr>
</table>

var page = PO.build({
  visit: PO.visitable('/users'),

  users: PO.collection({
    itemScope: '#users tr',

    item: {
      firstName: PO.text('td:nth-of-type(1)'),
      lastName:  PO.text('td:nth-of-type(2)')
    }
  })
});

test('show all users', function(assert) {
  page.visit();

  andThen(function() {
    assert.equal(page.users().count(), 2);
    assert.equal(page.users(1).firstName(), 'Jane');
    assert.equal(page.users(1).lastName(), 'Doe');
    assert.equal(page.users(2).firstName(), 'John');
    assert.equal(page.users(2).lastName(), 'Doe');
  });
});

You can use ES6 destructuring to declutter even more your page definition:

var { visitable, collection, text } = PO;

var page = PO.build({
  visit: visitable('/users'),

  users: collection({
    itemScope: '#users tr',

    item: {
      firstName: text('td:nth-of-type(1)'),
      lastName:  text('td:nth-of-type(2)')
    }
  })
});

Check the DOCUMENTATION for more information.

Blueprints

You can create a new page object called users using the generate command

$ ember generate page-object users

installing
  create tests/pages/users.js

A new file will be generated under tests/pages folder and can be included on an acceptance test like follows

import Ember from 'ember';
import { module, test } from 'qunit';
import startApp from '../helpers/start-app';
import page from '../pages/users';

var application;

module('Acceptance: UserList', {
  beforeEach: function() {
    application = startApp();
  },

  afterEach: function() {
    Ember.run(application, 'destroy');
  }
});

test('visiting /users', function(assert) {
  page.visit();

  andThen(function() {
    assert.equal(currentPath(), 'users');
  });
});

Development

Installation

• git clone this repository
• npm install
• bower install

Running

• ember server
• Visit your app at http://localhost:4200.

Running Tests

• ember test
• ember test --server

Building

• ember build

Project's health

License

ember-cli-page-object is licensed under the MIT license.

See LICENSE for the full license text.