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README.md

Docker Selenium-Grid PHPUnit/Mink

This is the example application for the article Selenium-Grid mit Docker im PHP Magazin 5.16

This is a simple example how to use a Selenium-Grid with PHPUnit and Mink. There are three test classes, to demonstrate parallel execution of tests. One test has a duration of ~10s (uses sleep()). So you can see the difference and have time to observe the test execution in the Selenium-Grid.

  • WikipediaChromeTest: Uses Google Chrome with Selenium to test the search widget
  • WikipediaFirefoxTest: Uses Mozilla Firefox with Selenium to test the search widget
  • WikipediaGoutteTest: Uses Mink Goutte Driver to test the search widget (headless Browser)

Start Selenium-Grid

First, you need to setup a Selenium-Grid. Please install Docker >= 1.11 and Docker Compose >= 1.7 and then run:

$ docker-compose up -d

If you interested in more Docker Images, please take a look at the prooph/docker-files.

Scaling Selenium-Grid

You can run more Firefox oder Chrome instances by running:

$ docker-compose scale firefox=5
$ docker-compose scale chrome=5

Watching Tests

You can watch the test execution with a VNC Viewer like xvnc4viewer.

Determine the ports of the Selenium-Node Docker container with:

$ docker-compose port firefox
$ docker-compose port chrome

Use the IP/Port with the VNC Viewer. The passwort is secret:

$ vncviewer 0.0.0.0:49338

Install Composer Dependencies

To install the Composer dependencies run:

$ docker run --rm -it --volume $(pwd):/app prooph/composer:7.0 install --dev -o

Using PHPUnit

Every test is executed in order. This should take ~28s.

$ docker run --rm -it --volume $(pwd):/app --link hub:hub prooph/php:7.0-cli vendor/bin/phpunit

Output:

PHPUnit 5.3.4 by Sebastian Bergmann and contributors.

...                                                                 3 / 3 (100%)

Time: 28.07 seconds, Memory: 8.00MB

OK (3 tests, 3 assertions)

Using ParaTest

The objective of ParaTest is to support parallel testing in PHPUnit. Every test is executed in parallel. This should take ~13s.

$ docker run --rm -it --volume $(pwd):/app --link hub:hub prooph/php:7.0-cli vendor/bin/paratest

Output:

Running phpunit in 5 processes with /app/vendor/bin/phpunit

Configuration read from /app/phpunit.xml.dist

...

Time: 13.57 seconds, Memory: 4.00MB

OK (3 tests, 3 assertions)

Using parallel

Every test is executed parallel in an own Docker PHP container. This should take ~13s.

$ find test/ -name "*Test.php" | parallel --gnu -P 0 'docker run --rm --volume $(pwd):/app --link hub:hub prooph/php:7.0-cli vendor/bin/phpunit {};echo "Runned {} tests";'

Output:

When using programs that use GNU Parallel to process data for publication please cite:

  O. Tange (2011): GNU Parallel - The Command-Line Power Tool,
  ;login: The USENIX Magazine, February 2011:42-47.

This helps funding further development; and it won't cost you a cent.
Or you can get GNU Parallel without this requirement by paying 10000 EUR.

To silence this citation notice run 'parallel --bibtex' once or use '--no-notice'.

PHPUnit 5.3.4 by Sebastian Bergmann and contributors.

.                                                                   1 / 1 (100%)

Time: 5.73 seconds, Memory: 6.00MB

OK (1 test, 1 assertion)
Runned test/integration/WikipediaGoutteTest.php tests
PHPUnit 5.3.4 by Sebastian Bergmann and contributors.

.                                                                   1 / 1 (100%)

Time: 9.44 seconds, Memory: 4.00MB

OK (1 test, 1 assertion)
Runned test/integration/WikipediaChromeTest.php tests
PHPUnit 5.3.4 by Sebastian Bergmann and contributors.

.                                                                   1 / 1 (100%)

Time: 13.14 seconds, Memory: 6.00MB

OK (1 test, 1 assertion)
Runned test/integration/WikipediaFirefoxTest.php tests