User:Dan Nessett/Technical/Notes on Regresssion Testing

The account of this former contributor was not re-activated after the server upgrade of March 2022.

General Notes

• For linux wmctrl allows the manipulation of windows from the command line. This is useful for running tests that start up a browser window (and console, such as Selenium), since it is possible to create a wrapper that starts up the browser and then immediately minimizes its window. This keeps the main window uncluttered during test runs. To install wmctrl on Ubuntu:

sudo apt-get install wmctrl

Notes on getting MW Selenium worked examples to work

Installing the necessary software

• Need to install PHPUnit. Use pear (comes installed with latest version of PHP)

sudo pear upgrade pear
sudo pear channel-discover pear.phpunit.de
sudo pear install phpunit/PHPUnit

Pear files are in (Ubuntu): /usr/share/php/PEAR PHPUnit files are in (Ubuntu): /usr/share/php/PHPUnit

• Need to install Selenium

• Selenium Remote Control (RC) is found at: http://seleniumhq.org/download/
• Need java jvm installed (at least version 1.5)
• Selenium RC only requires running selenium-server:

• java -jar /path/to/selenium-server.jar

• Selenium-IDE is also found at: http://seleniumhq.org/download/
• It is a plugin for Firefox (only works on Firefox).

• Need to install Testing/Selenium:

sudo pear install Testing_Selenium

• You may need to specify a specific version. To find out the most recent verion:

pear remote-info Testing_Selenium

Setting up RunSeleniumTests.php (for Ubuntu)

• Make sure the require_once() of PagedTiffHandler in LocalSetings.php comes after the setting of $wgFileExtensions; otherwise that setting will clobber the addtion of .tiff and .tif by PagedTiffHandler

• Copy the file .../tests/selenium/LocalSeleniumSettings.php.sample to .../tests/selenium/LocalSeleniumSettings.php
• Edit LocalSeleniumSettings.php and change the line:

set_include_path( get_include_path() . PATH_SEPARATOR . 'PEAR' );

to read:

set_include_path( get_include_path() . PATH_SEPARATOR . '/usr/share/php/PEAR' );

• In the file LocalSeleniumSettings.php, make the following modifications (leave the other lines alone):

$wgSeleniumTestsSeleniumHost = 'http://localhost';

$wgSeleniumTestsWikiUrl = 'http://localhost/<relative URL of wiki>';

For example, if in /etc/apache2/sites-enabled/000-default the directory relative URL to all wikis is:

Alias /mediawiki/ "/usr/local/src/mediawiki/"

and the specific wiki containing the selenium test directory is:

/usr/local/src/mediawiki/CZ_RF_1_13_2

then $wgSeleniumTestsWikiUrl should be set to:

$wgSeleniumTestsWikiUrl = 'http://localhost/mediawiki/CZ_refactor_1_13_2/phase3';

Set the following variables to the db user and pw

$wgSeleniumTestsWikiUser      = '';

$wgSeleniumTestsWikiPassword  = '';

Set:

$wgSeleniumTestsBrowsers['firefox']   = '*firefox /usr/bin/firefox';

$wgSeleniumTestsUseBrowser = 'firefox';

Set the tests. Assuming you have loaded the PagedTiffHandler extension (and uploaded the file Multipage.tiff to the Images namespace as Multipage.tiff)

$wgSeleniumTestIncludes = array(

'selenium/SimpleSeleniumTest.php',

'/<path/to/wiki>/phase3/extensions/PagedTiffHandler/selenium/PagedTiffHandler_tests.php'

Some useful URLs

• Netbeans, Selenium and PHPUnit:

  http://netbeans.org/kb/docs/php/phpunit.html

Selenium meeting notes 5/14/2010

• The Selenium framework testing code in the latest trunk of MW (r66751 ) is designed to work with 1.13 and has been tested on 1.13 and 1.15.
• In order to allow tests to dynamically configure the wiki, create an extension that is called by a hook at the end of LocalSettings. This extension then sets any necessary global variables and returns.
• Each test needs to establish the db in a state suitable for testing. How this will be accomplished is yet undefined.
• Discussion of the Selenium Framework for MW will be conducted on Wikitech-l
• There exists RC scripts for the Selenium-Grid machines. These will be checked into the main trunk.
• Some relevant links from Ryan Lane:

• http://grid.tesla.usability.wikimedia.org/console
• http://grid.tesla.usability.wikimedia.org:4444
• http://www.mediawiki.org/wiki/Selenium
• http://www.mediawiki.org/wiki/SeleniumFramework