Presentation done in VN office (2011/03/02) Why do we need to use Sonar at

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Sonar in Action
by Frédéric DROUET and Arnaud HERITIER
02/03/2011

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Agenda
» How do we measure the code quality ?
» The 7 worst practices
» The Goals of Sonar
» Demonstration on YOUR code

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Why do we need this kind of tool

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How do we measure the code quality ?
In the past

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How do we measure the code quality ?
That is not sufficient !

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How do we measure the code quality ?
Today : we need to measure the Technical Debt …

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How do we measure the code quality ?
… and to monitor this Technical Debt …
… to take corrective actions without being blind

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The 7 worst practices

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The 7 worst practices
1- Duplicated code
» Which one do you prefer ?

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The 7 worst practices
2- Maldistribution of the complexity
» What is the best ?
» 1 method with a complexity of 30
» 10 methods with a complexity of 3

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The 7 worst practices
3- Bad design
» Which package / class
is responsible of what ?

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The 7 worst practices
4- Potential bugs

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The 7 worst practices
5- Little or no use of unit tests
» Please add a new case
BUT
without any regression of course

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The 7 worst practices
6- Non-compliance with standards
» We have opened a dedicated Wiki Space for Development Standards for eXo
» https://wiki-int.exoplatform.org/display/DEVSTD

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The 7 worst practices
7- No comment or too many comments

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The goals of Sonar

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The goals of Sonar
» Help the developer to find the problems
» Help the managers to monitor the health of the codebase
and to follow the trends

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Demonstration

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Demonstration
» https://sonar.exoplatform.org