Test Driven Development with OSGi

Balázs Zsoldos

Original motivation

Deployment time

2 minutes Internet time

10 minutes

Coding time

Deployment time

Facebook time

“What was I doing?” time

Reduce

deployment

time

v3

“mvn package”

+

copy file

Iteration is faster, but not fast enough (compile + copy)

drop JAR

OR

Drop project

process

“target/classes”

Eclipse

+

maven-bundle-plugin

=

up-to-date “target/classes”

Richconsole deployment

OSGi container

Bundle A (startLevel=4)

Bundle B (startLevel=2)

StartLevel 10

StartLevel 2B

AA

Deployment time reduced

How can we have better quality?

The Three Laws of TDD

1.You are not allowed to write any production code until you have first

2.You are not allowed to write more of a unit test than is sufficient to

3.You are not allowed to write more production code that is sufficient

The Clean Coder (Chapter 5)

Test runner

Framework Startup

Blocker

Blueprint

Blocker

JUnit4

TestEngine

External Blockers External Test Engines

Test runner

Test service

service.id=MyTest

service.testEngine=junit4

JUnit4

TestEngine

Blueprint / DS / creation from Acvtivator / ...

I do not want to re-run all tests during

development

In development mode only tests with

@TestMethodInDevelopmentMode or

@TestClassInDevelopmentMode runs.

I do not want to re-run all tests during

development

Test Code

Production code

Deploy / Run tests

Test Code

Production code

Deploy / Run tests

What will run the tests on Jenkins?

Maven repository

Get the dist package

File system

- Unpack dist package

- Parse with velocity

- Add the dependencies

eosgi-maven-plugin:dist

Maven repository

eosgi-maven-plugin:integration-test

Get the dist package

File system

- Unpack dist package

- Parse with velocity

- Add the dependencies

- with testrunner

- as symbolic links

Start the container

Collect test results

<plugin><groupId>org.everit.osgi.dev</groupId><artifactId>eosgi-maven-plugin</artifactId><version>1.1.3-SNAPSHOT</version><configuration>

<environments><environment>

<id>equinoxtest</id><framework>equinox</framework>

</environment></environments>

</configuration></plugin>

# Default environments in META-INF/eosgi-framework.properties

equinox=org.everit.osgi.dist:eosgi-dist-equinox:3.7.2-v201309190021equinox-3.7.2=org.everit.osgi.dist:eosgi-dist-equinox:3.7.2-v201309190021

Maven plugin configuration

<plugin><groupId>org.everit.osgi.dev</groupId><artifactId>eosgi-maven-plugin</artifactId><version>1.1.3-SNAPSHOT</version><configuration>

<environments><environment>

<id>equinoxtest</id><framework>equinox</framework><vmOptions>

<vmOption>-Xdebug</vmOption><vmOption>-Xrunjdwp:server=y\,transport=dt_socket\,address=4000\,suspend=n</vmOption>

</vmOptions></environment>

</environments></configuration>

</plugin>

<plugin><groupId>org.everit.osgi.dev</groupId><artifactId>eosgi-maven-plugin</artifactId><version>1.1.3-SNAPSHOT</version><configuration>

<environments><environment>

<id>equinoxtest</id><framework>equinox</framework><systemProperties>

<myProperty1>myValue1</myProperty1><myProperty2>myValue2</myProperty2>

</systemProperties></environment>

</environments></configuration>

</plugin>

Maven plugin configuration

<plugin><groupId>org.everit.osgi.dev</groupId><artifactId>eosgi-maven-plugin</artifactId><version>1.1.3-SNAPSHOT</version><configuration>

<environments><environment>

<id>equinoxtest</id><framework>equinox</framework><timeout>300000</timeout><bundleStartLevel>4</bundleStartLevel><frameworkStartLevel>4</frameworkStartLevel><bundleSettings>

<bundle><symbolicName>myBundle</symbolicName><version>1.0.0</version><startLevel>3</startLevel>

</bundle></bundleSettings>

</environment></environments>

</configuration></plugin>

Maven plugin configuration

<plugin><groupId>org.everit.osgi.dev</groupId><artifactId>eosgi-maven-plugin</artifactId><version>1.1.3-SNAPSHOT</version><executions>

<execution><id>integration-test</id><phase>integration-test</phase><goals>

<goal>integration-test</goal></goals><configuration>

<jacoco><includes>org.everit.osgi.servicereference.*</includes><excludes>org.everit.osgi.servicereference.tests.*</excludes>

</jacoco><environments>

<environment><id>equinoxtest</id><framework>equinox</framework><vmOptions>

<vmOption>-Xdebug</vmOption><vmOption>-Xrunjdwp:server=y\,transport=dt_socket\,address=4000\,suspend=n</vmOption>

</vmOptions></environment>

</environments></configuration>

</execution></executions>

</plugin>

Maven plugin configuration

100% coverage

Let's see it in practice

Creating your own dist package

●Look at the sample equinox package

●Look at the .eosgi.dist.xml file

●Look for the XSD in eosgi-maven-plugin sources and

read the documentation

●Velocity variables

– .eosgi.dist.xml

● bundleArtifacts: List<DistributableBundleArtifact>

● environment: EnvironmentConfiguration

–Parseable files

Thank you

http://github.com/everit-org

balazs.zsoldos@everit.bizE-mail:

Source:

Maven repo: http://repository.everit.biz/nexus/content/groups/public