Automated UI testing. Selenium. DrupalCamp Kyiv 2011

Automated UI testing. Selenium

Plan
What is Selenium?
Selenium IDE, RC, Webdriver
Integration to Drupal
Tests API, locators, examples
Future

What is Selenium?
Selenium IDE
Selenium RC
Selenium Grid
Selenium 2 (Webdriver)

Selenium IDE
Addon to Firefox
Easy to start using
Can record tests in PHP
Demo

Selenium RC
Run in multiple browsers in Virtual Boxes
Runs tests via Javascript

Selenium RC
To install Selenium RC download java server from http://seleniumhq.org/download
Run Selenium IDE tests via PHPUnit
Ubuntu: apt-get install phpunit
If php 5.2 make a preference for karmic like for php
Demo

Selenium 2 Webdriver
Communicate with browsers in 'native' way via drivers
Not limited to javascripts. For example: upload files, work with popups, iframes etc.
Support for a lot of browsers including mobile phone browsers
PHPUnit libraries: https://github.com/chibimagic/WebDriver-PHP

Selenium2 Webdriver and Drupal
How to integrate to simpletest
In order to get into sandbox we need to set headers
This is possible with Firefox only (send custom profile to Selenium)
http://drupal.org/project/selenium
Demo

Drupal tests API
Main class DrupalSeleniumWebTestCase
Init driver as connection to Selenium server
Already implemented methods:
drupalOpenUrl, drupalLogin, drupalLogout, verboseScreenshot ...
class SeleniumWebElement (sendKeys, click, submit, getText...)

Selenium 2 locators
css, id, name, class, link, xpath

XPath vs CSS locators
Selenium RC has sizzle
Webdriver uses native browsers CSS selectors.
CSS selectors are faster
XPath can go up
Example:
id('user1')/../../td[@class="actions"]/a[@class="delete-user"]

Drag and drop example

Run tests on headless server
Key tool: Xvfb – X11 server that performs all graphical operations in memory, not showing any screen output (http://en.wikipedia.org/wiki/Xvfb).
Before we start Selenium server we need to start Xvfb.
Run tests from shell:
sudo -u www-data php ./scripts/run-tests.sh --url http://URL --class SeleniumTestExample

Future
Implement methods from DrupalWebTestCase
Start using Selenium in testing contrib modules and core (module draggableviews already have one selenium test)

References
Selenium RC supported browsers http://www.seleniumwiki.com/software-testing/selenium-supported-browsers
PHPUnit documentation about Selenium http://www.phpunit.de/manual/3.5/en/selenium.html#selenium.selenium-rc
http://ygerasimov.com/integrating-selenium-to-drupal-simpletest-framework
http://ygerasimov.com/run-selenium-tests-drupal-on-debian-headless
http://ygerasimov.com/drupal-selenium-tests-api

Questions
Ваша фотка
email: [email_address] twitter: ygerasimov skype: yuriy_gerasimov
d.o.: http://drupal.org/user/257311

Automated UI testing. Selenium. DrupalCamp Kyiv 2011

by ygerasimov

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