Ever got the message "Fatal error: Out of memory" when running your unit tests? Or do you have to wait for more than 5 minutes for all of your unit tests to complete? We're using Docker to mitigate these and other issues. In this session I will show you how we have split up a single testsuite of 3K+ tests into manageable unit modules which are executed by Docker micro instances in parallel. And with this set up we test our application on the current PHP version, but it also allows us to test against a new major PHP version the moment it is released or even is available in beta.

1. DOCKERIZE YOUR UNIT TESTS FOR
FASTER FEEDBACK
Let’s speed up your tests!
https://goo.gl/images/OdSqB4

2. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 2
FotobyAnnaFilinaatBGPHP16

3. Michelangelo van Dam
‣ Pro PHP consultant at in2it
‣ President of PHPBenelux
‣ Open-Source contributor
‣ Conference Speaker
‣ ZCE and ZF-CE
in itPROFESSIONAL PHP SERVICES
PHPUnit + Docker = 🚗💨 3

4. PHPUNIT
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 4
https://goo.gl/images/eBa0vw

5. EXTRAS TO RUN PHPUNIT
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 5
‣ Command-line?
‣ Run from IDE?
‣ Test server?
‣ Jenkins, TeamCity, Bamboo?
‣ Vagrant?
‣ Docker?
https://goo.gl/images/l0HXj7

6. DRAWBACKS
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 6
‣ Takes long time for many tests
‣ Environment not always ready for testing
‣ Tests don’t provide good feedback
https://goo.gl/images/TajZrP

7. SYSTEM FAILURES
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 7
‣ Memory Exhausted
‣ Disk full
‣ No network or network latency
‣ Systems crash
https://goo.gl/images/ruod6b

8. DOCKER
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 8
https://goo.gl/images/vhDEGy

9. WHAT IS DOCKER?
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 9
‣ Technology platform
‣ Run processes in separate containers
‣ Scales fast and seemlessly
‣ Containers are easy shippable
‣ Best next thing since sliced bread
https://goo.gl/images/xEfLk5

10. DOCKER USAGE
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 10
‣ Mimic distributed architectures
‣ Isolate applications
‣ Run single purpose commands
https://goo.gl/images/LIfWVb

11. DEMO TIME
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 11

12. RUN THEM ALL
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 12
https://goo.gl/images/grh4mu

13. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 13

14. USING @GROUP
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 14
https://www.flickr.com/photos/bgphp/21210790293

15. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 15

16. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 16

17. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 17
for i in `./vendor/bin/phpunit --list-groups | grep "^
-" | awk {'print $2'}`; do ./vendor/bin/phpunit --group
$i; done;

18. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 18

19. SHIP IT WITH DOCKER!!!
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 19
https://goo.gl/images/Fo0dVi

20. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 20
docker run -ti --rm -v "$PWD":/usr/src/myapp -w /usr/
src/myapp php:7.0-cli ./vendor/bin/phpunit

21. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 21

22. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 22
https://www.gnu.org/software/parallel/

23. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 23
for i in `./vendor/bin/phpunit —list-groups | grep "^
-“ | awk {'print $2'}`; do echo $i; done | /usr/local/
bin/parallel docker run -v "$PWD":/usr/src/myapp -w /
usr/src/myapp php:7.0-cli ./vendor/bin/phpunit --log-
junit=build/junit-{}.xml --group {}

24. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 24

25. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 25
for i in `./vendor/bin/phpunit —list-groups | grep "^
-“ | awk {'print $2'}`; do echo $i; done | time /usr/
local/bin/parallel docker run -d -v "$PWD":/usr/src/
myapp -w /usr/src/myapp php:7.0-cli ./vendor/bin/
phpunit --log-junit=build/junit-{}.xml --group {}

26. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 26

27. WHERE ARE MY FAILURES?
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 27
https://goo.gl/images/VWpYFO

28. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 28
for i in `./vendor/bin/phpunit --list-groups | grep "^
-" | awk {'print $2'}`; do echo $i; done | time
parallel docker run -d -v "$PWD":/var/run/phpunit -w /
var/run/phpunit --name pu-docker-{} php:7.0-cli /var/
run/phpunit/vendor/bin/phpunit --group {} && for i in
`./vendor/bin/phpunit --list-groups | grep "^ -" | awk
{'print $2'}`; do docker wait pu-docker-$i | grep -c 0
> /dev/null || docker logs pu-docker-$i && docker rm -f
pu-docker-$i > /dev/null; done;

29. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 29
‣ loop over our @group list entries
‣ run these in docker (daemonized)
‣ loop over our @group list entries
‣ fetch the exit status of phpunit from the containers
‣ if not 0 -> show us the failure

30. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 30

31. #FTW #PARTY #AWESOME
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 31
https://goo.gl/images/uWs8N0

32. OTHER SCENARIOS
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 32
‣ Test on different PHP versions
‣ Test separation based on TestSuite, Directory, …
‣ Testing long running integration tests separately
‣ Resilience testing
https://goo.gl/images/JnY8yr

33. QUESTIONS
www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 33
https://goo.gl/images/mM3D3j

34. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 34
PHPUnit/Unit Testing
Ensure your apps are
of high quality
Zend Framework 2/3
Build robust web
applications
Azure PHP
Quick time to market
Scale up and out
jQuery
Professional jQuery
PHP 7
Learn the web language
that powers 80% of the
internet
On-site Training
Personal coaching and
mentoring on-site
Training courses 2016 - 2017

35. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 35
phpcon.eu
Ticket sales start soon!
January 27 & 28 in Antwerp (Belgium)

36. www.in2it.be - @in2itvof PHPUnit + Docker = 🚗💨 36
https://goo.gl/images/dKsFdO