Improving code quality with Continuous
Integration Martin de Keijzer PHPBenelux Conference 2011

Martin de Keijzer •Software Engineer
at Ibuildings •PHPBenelux board member •Zend Certified Engineer (PHP5) •Twitter: Martin1982 2

Image resources Slide 5: http://labs.specialmoves.com/code/automating-development-tasks-ant-and-hudson/
Slide 9: http://chucktv.net/ Slide 10: http://www.sxc.hu/photo/1269250 Slide 12: http://www.sxc.hu/photo/1139313 Slide 15: http://www.sxc.hu/photo/913679 Slide 24: http://www.sxc.hu/photo/1269809 Slide 30: http://www.sxc.hu/photo/1290413 Your rights missing?? Contact me and I will update the slide. 3

Talk summary •What is Continuous
Integration •The structure of a CI environment •Tools for a CI process •Setting up your CI server •Apache Ant •Adding your project •Questions 4

What is Continuous Integration?
5

What is continuous integration? First
written of in 1999; originating from the eXtreme Programming community. Martin Fowler Kent Beck 6

What is continuous integration? Wikipedia
says: “In software engineering, continuous integration (CI) implements continuous processes of applying quality control — small pieces of effort, applied frequently.” 7

Benefits More work? What will
I gain? 8

Benefits of CI
9

Benefits of CI •Detect errors
early and often 9

Benefits of CI •Detect errors
early and often •Scaleable automation of Quality Assurance 9

Benefits of CI •Detect errors
early and often •Scaleable automation of Quality Assurance •Reports for each build 9

Benefits of CI •Detect errors
early and often •Scaleable automation of Quality Assurance •Reports for each build •Improvement of your overall codebase 9

Benefits of CI •Detect errors
early and often •Scaleable automation of Quality Assurance •Reports for each build •Improvement of your overall codebase •API Documentation 9

Benefits of CI •Detect errors
early and often •Scaleable automation of Quality Assurance •Reports for each build •Improvement of your overall codebase •API Documentation •Customer and developer satisfaction 9

The structure
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The structure Developer A Commits
SCM Developer B Git/SVN/etc.. Developer C Revision checks Continuous Integration Server Build Tool Apache Ant Set of quality assurance tools PHPDoc / CodeSniffer / PHPMD / PHPUnit / Pdepend CI Frontend 11

Structure: revision control
12

Structure: revision control
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Structure: revision control
14

Setting up a CI server
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Setting up a CI server
JRE 1.5+ required for both Hudson / Jenkins + Plugins Cruise control + phpUnderControl 16

Hudson - Dashboard
17

Hudson - Job overview
18

Hudson - Metrics
19

Setting up a CI server
Optional Hudson plugin Chuck Norris: 20

phpUnderControl - Dashboard
21

phpUnderControl - Job overview
22

phpUnderControl - Metrics
23

The tools
24

The tools
http://www.flickr.com/photos/sebastian_bergmann/
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PHPUnit
26

PHPUnit Goal Unit testing Documentation
www.phpunit.de Installation PEAR Hudson Plugin xUnit 27

PHPUnit - Hudson
28

PHPUnit - phpUnderControl
29

PHPDocumentor
30

PHPDocumentor Goal Code documentation Documentation
www.phpdoc.org Installation PEAR 31

PHPDocumentor - Hudson
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PHPDocumentor - Hudson
33

PHPDocumentor - phpUC
34

PHP_Codesniffer
35

PHP_CodeSniffer PHP_CodeSniffer Goal Coding standards
pear.php.net/ Documentation PHP_CodeSniffer Installation PEAR Hudson plugin Checkstyle 36

PHP_CodeSniffer - Hudson
37

PHP_CodeSniffer - phpUC
38

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http://www.sxc.hu/photo/763374

PHPMD Goal Cleaner code Documentation
phpmd.org Installation PEAR Hudson plugin PMD 40

PHPMD - Hudson
41

PHPMD - phpUnderControl
42

43

PHP CPD PHP CPD Goal
Copy-paste detection https://github.com/ Documentation sebastianbergmann/ phpcpd Installation PEAR Hudson plugin Violations plugin 44

PHP CPD - Hudson
45

PHP CPD - phpUnderControl
46

Preparing a project Checklist: •
Is my project under source control? • Which tools do I want to use for my project? • Do I know the command line options to get the right output? • Are the output formats of my tools supported by the CI server? 47

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Apache Ant • XML Based
• Multiple jobs • Target - command line job 49

Apache Ant build.xml Starts with:
Root tag: 50

Apache Ant - targets
51

Apache Ant - The build
target 52

Adding your project
53

Adding your project
config.xml
54

Configuring CruiseControl Body Boot source
control 55

Configuring CruiseControl Schedule Apache Ant
Logging a build 56

Configuring CruiseControl Publishing additional files
57

More plugins • E-mail triggers
(PHPUC / Hudson) • Twitter (Hudson) • CodeBrowser (PHPUC) • Selenium (Hudson) • Netbeans plugin for Hudson • iPhoneView (Hudson) • The CI Game (Hudson) 58

Questions ?
59

Thank you! Slides will be
available at: http://www.slideshare.com/Martin82 VirtualBox image available per request during the rest of the conference.