An example of using ParaTest to speed up functional tests with Selenium2 and PHPUnit
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Testing PHPUnit's PHPUnit_Extensions_Selenium2TestCase With ParaTest

This is an example of running Selenium Web Driver tests in parallel with ParaTest. The tests use the Chrome browser to test the Backbone.js Todo app. Running on Ubuntu 12.04 with Chrome Version 22.0.1229.79 - the results were as follows:

Vanilla PHPUnit:

PHPUnit Selenium Results

ParaTest Results:

ParaTest Selenium Results

2.25 times faster than PHPUnit alone on this test and this machine.

Setting Up

Get Selenium Server

You will need to make sure you have selenium server installed. Head over to SeleniumHQ and download the latest and greatest. To run the server run the jar like so:

java -jar /path/to/selenium-server-standalone-2.25.0.jar

Install Dependencies Via Composer

All of the dependencies can be installed via composer.

php composer.phar install

This will install PHPUnit and ParaTest.

Install Chrome Driver

These tests operate via the Chrome Driver. Installation is easy, and instructions for doing so can be found at the Selenium wiki

Running The Tests

To run the tests using ParaTest run the following command (will read suite from phpunix.xml): vendor/bin/paratest -f

To run the tests using phpunit alone run the following command: vendor/bin/phpunit

For more information on ParaTest head over to the repo.