Test automation patterns - not only Page Object Pawel Maciejewski

Test automation patterns - not only Page Object by Pawel Maciejewski
Slides illustrating my speech at Selenium Camp 2017 at Kiev

Transcript

1. Pawel Maciejewski pawel@maciejewski.in Selenium Camp Kiev, 25.02 Test automation patterns not only Page Object
2. Pawel Maciejewski + 5y of experience in test automation + Web based apps + C# windows native apps + Banking, fintech, online classifieds + Created automation in C#, PHP, Ruby + ISTQB Foundation + ISTQB Advanced Technical Test Analyst + I love cats - fb.com/azor.cat
3. About olx
4. 10 countries Poznan
5. 86M Monthly users
6. 13M ADS MONTHLY
7. Backend STACK
8. Test Stack
9. Code • PHP • Behat/Gherkin scenarios • PHPUnit
10. NUMBERS • 704 test runs triggered daily • 23000 tests executed daily • 2543 scenarios • Estimation - some tests are executed on demand
11. Continuous Integration On the way to CD • We test each commit in master • We test each PR • Each test run have own docker-based env
12. Jenkins • 8 machines (24CPUs, 128gb ram each), 3 executor each • Separate pipeline for each country and each suite • Results reported to github
13. Agenda • Test data generation via API • Test entity assertion • Page Object Pattern extended
14. History of trojan and Sinon - test data generation
15. Trojan - SINON
16. Trojan /** * @Path /trojan/user/{status} * @POST */ public function createUser($status, JsonPayload $json) { //(...) return ApiForward::ok()->withPayload(['user' => $user]); } App logic, entity generation
17. Sinon /** * @param array $params * @return User */ public function createUser($params = []) { $trojanPost = $this->createTrojanPost($params, 'users/confirmed'); $user = $this->createUser($trojanPost); return new User($user); } Entity
18. Data generation - PROS • No maintenance and storage of test data • No dependance on database schema • Environment independent • Wider coverage
19. Data generation - CONS • Non-deterministic • Can lead to flaky tests
20. DOMAIN IDENTITY Builders, Factories, Entities
21. Domain identity in test // data generation // api call or UI interaction // assertion
22. Test entity assertion - API public function testUsersRequest() { $expectedUser = $this->sinon->createUser(); $this->api = new UserProfileApi($this->accessToken); $actualUser = $this->api->getUser($expectedUser->id); PHPUnit::assertEquals($expectedUser, $actualUser); } Entity retrieved from trojan Call to tested API Assertion on entities
23. TEST ENTITY FACTORY Build entity Same entity Build entity Different source class UserFactory { public function createEntityFromJson($json) { // (...) return User($data); } public function createEntityFromArray(array $user) { // (...) return User($data); } }
24. Test entity builder $email = $this->emailField->getElement($this)->getValue($email); (...) $user = $usersBuilder ->withEmail($email) ->withPassword($password) ->withType($status) (...) ->build(); Retrieve entity fields from UI Pass value to entity builder Build entity
25. Page object pattern
26. Page elements objects
27. Regular way public class LoginPage { public LoginPage typePassword(String password) { driver .findElement(By.id( "pass")) .sendKeys(password); return this; } } https://github.com/SeleniumHQ/selenium/wiki/PageObject s
28. Page elements - page design class LoginPage extends OlxBasePage { // page elements as class vars public function __construct() { // init elements in constructor } // perform actions with usage of elements }
29. Page elements - Class variables class LoginPage extends OlxBasePage { /** @var TextField */ private $emailField; /** @var TextField */ private $passwordField; /** @var Button */ private $submitButton; // rest of page } Each element have own type Elements are reusable
30. Page elements - page Constructor class LoginPage extends OlxBasePage { // page elements as class vars public function __construct() { parent::__construct('login'); $this->emailField = new TextField(LocatorType:: ID, 'userEmail'); $this->passwordField = new TextField(LocatorType:: ID, 'userPass'); $this->submitButton = new Button(LocatorType:: ID, 'se_userLogin'); } // perform actions with usage of elements } Clear definition
31. Page elements - Element usage class LoginPage extends OlxBasePage { // page elements as class vars public function __construct() { // init elements in constructor } public function fillLoginPassword( $password) { $this->passwordField->getElement($this)->setValue($password); } }
32. Page element - Base abstract class BaseElement { /** * @var RemoteWebElement */ protected $element; public function getElement($page) { $this->element = $this->$page->find()->elementWithId( $this->locator); } } Abstraction over webdriver native element
33. Page element - EXAMPLE class TextField extends BaseElement { public function setValue($value) { $this->element->sendKeys($value); } public function getValue() { return $this->element->getAttribute( 'value'); } } Abstraction over webdriver native element Webdriver native methods
34. Page factories multiple implementations - single interface
35. Page factory - MULTIPLE IMPLEMENTATIONS class NewAdPageFactory { public function getDesktopPage() { switch (OlxBaseContext::$currentCountry) { case Country::UKRAINE_RU: return new NewAdPageUA(PageType::DESKTOP); (...) default: return new NewAdPageDefault(PageType::DESKTOP); } } (...) } Each country-specific page
36. Page factory - MULTIPLE ELEMENTS public function getDesktopPage() { switch (OlxBaseContext:: $currentCountry) { (...) case Country::KAZAKHSTAN: $params = array_merge( $params, ['breeding' => new DesktopDropdown(LocatorType:: XPATH, 'targetparam153')]); break; default: $params = array_merge( $params, ['breeding' => new TextField(LocatorType:: ID, 'param185')]); break; } return new NewAdCatsPage( $params); } Different elements
37. Page factory - ONE INTERFACE /** * @Given /^I open posting form$/ */ public function iNavigateToPostingForm() { $adPage = (new NewAdPageFactory())->getDesktopPage(); $adPage->open(); } One call for each country
38. THANK YOU
39. tech.olx.com
40. Pawel Maciejewski pawel@maciejewski.in fb.com/azor.cat linkedin.com/in/pawelmaciejewski @mawelpac