DroidconUK 2013 : Beef up android apps with java tools

USING JAVA TOOLS�BEEF UP ANDROID APPS�

Stéphane Nicolas & Jérôme Van Der Linden

Jerome Van Der Linden�

android-­‐holo-­‐colors.com  

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@jeromevdl   +jerome  van  der  linden  jeromevdl  

Stéphane Nicolas�

BoundBox  

And  others  :  RoboDemo,  Quality  Analysis  Tools  for  Android,  android-­‐maven-­‐plugin,  …  

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+stephane  nicolas  snicolas  stephanenicolas  

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JAVA ENVIRONMENT�

ONCE UPON A TIME �15  

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Everything is testable ��

Everything is measurable ��

Everything is integrated���

No excuses to have poor apps ! �

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Great ! �

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And me ?! �

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2 WTF ?! �

ANDROID IS JAVA ! �

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Almost YES… �

… a story of �Virtual Machine �

So what … ?�

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Oh Yeah ! �

(almost) Everything is testable ��

(almost) Everything is measurable ��

BUT��

Everything is NOT integrated������

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Quality Tools for Android��

http://goo.gl/zGFvda�

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3 Quality Tools Android �

Ant�

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4 Quality Tools Android �

Maven �

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<plugin> ! <groupId>com.jayway.maven.plugins.android.generation2</groupId>"! <artifactId>android-maven-plugin</artifactId> ! <version>3.6.1</version> !</plugin> !

The magical� plugin�

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The ultimate � profile �

# run junit, robotium, robolectric tests and get code coverage!> mvn clean install –P jacoco!

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Maven Profiles

Junit  +  Robo,um Robolectric UIAutomator Code  

coverage

Quality  checks  

(Checkstyle  +  findbugs  +  PMD  +  lint)

Sonar

standard

emma

cobertura

ui  automator

spoon

jacoco

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x2  

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hOps://github.com/SonarCommunity/sonar-­‐android  

# analyse code (pmd, checkstyle, findbugs, lint) and report in sonar !> mvn sonar:sonar –P jacoco!

Android Lint �Sonar plugin�

Not an archetype �(see akquinet : http://goo.gl/O46LIw) �

�Only samples �

�Do not use everything ! �

�Pick up what you need ! �

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Return of �real life experience �

Maven  Jenkins  Sonar  (PMD,  checkstyle,  findbugs,  lint)  Junit  (Instrumenta[onTestCase)  

~  100  screens  (phone  +  tablet)  ~  5  developers  during  only  5  months  ~  60k  loc  (java),  15k  loc  (xml)  ~  400  unit  tests  :  not  an  excep[onal  coverage  (~  30%)  Built  on  each  commit  on  Jenkins  +  Genymo[on  0  lint,  pmd,  findbugs,  checkstyle  viola[ons  1  sonar  report  generated  each  night  with  those  metrics    è  An  happy  customer  J  

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A  laborious  development  environment  :  eclipse  +  maven  +  m2eclipse  +  android  m2e  connector  è Many  hours  lost  è  Use  IntelliJ  !    

A  laborious  execu[on  environment  :  emulator  è  Too  slow  è  Use  Genymo[on  (or  at  least  a  device)  !    Not  enough  tests  :  è Instrumenta[onTestCase  are  too  heavy/slow  for  Unit  Tes[ng    è Use  Robolectric  and/or  think  about  MV*  paOern  è  Keep  Instrumenta[onTestCase  for  Android  specific  (Ac[vity,  Services,  …)    

Lessons � learned�

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A  robust  development  environment  :  eclipse  +  maven  +  m2eclipse  +  android  m2e  connector  è  s[ll  some  problem  with  eclipse  and  maven  integra[on    About  tests  è Instrumenta[onTestCase  are  fast  enough  with  GenyMo[on  è  Robolectric  can’t  give  you  enough  confidence      

Lessons � learned�

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5 Quality Tools Android �

Gradle �

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Lint ��

UIAutomator��

Monkey & Monkey Runner ��

Robolectric ��

PMD, checkstyle, findbugs ��

Emma, Cobertura, Jacoco �

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Before    V  0.6  

Joke ?! �

Lint ��

UIAutomator��

Monkey & Monkey Runner ��

Robolectric ��

PMD, checkstyle, findbugs ��

Emma, Cobertura, Jacoco �

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V  0.6.+  

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Quality �the gradle way�# run junit, robotium, robolectric tests !# AND Chekstyle + PMD + Findbugs + Classycle !> gradle check!# report in sonar !> gradle sonarRunner!

6 Conclusion�

Android is filling the gap�

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Feature Gradle Maven

Application Variants & Manifest merging ?

Standard  tests  &  Robo,um

Code  Coverage  

Robolectric

UI  automator  /  Monkey  /  Monkey  Runner

PMD  /  CheckStyle  /  FindBgugs  /  Classycle  /  Lint

Sonar  &  Project  Sites

Gradle0.6.1 VS Maven3.6.1�

34  Android offers ��

lots of quality tools ��

lots of testing methods ��

rapid testing��

Everything gets easier to use�

�Build rock solid apps �

Thank You ! �

Any Question ?� Stéphane Nicolas & Jérôme Van Der Linden

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@jeromevdl   +jerome  van  der  linden  jeromevdl  

+stephane  nicolas  snicolas  stephanenicolas  

Quality Tools for Android��

http://goo.gl/zGFvda�

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