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Background
Sonar currently reports on the code coverage of unit tests only using the Emma code coverage tool. It is however
desirable to have code coverage for integration and acceptance tests as well. This will help us measure our progress
towards automating all manual tests and improve the efficiency of our test base.
Jacoco
Jacoco is a code coverage tool that uses a different approach from Emma in to obtain code coverage data. Basically,
it does bytecode instrumentation on-the-fly using the java agent technology. It works by inserting probes (additional instructions
that record the fact that they have been executed) into the code base accessible to the virtual machine. It is therefore important
to define inclusions and exclusions to restrict jacoco to mifos code.
Getting the tools
Download jacoco
Download sonar jacoco plugin
Download sonar
Insert the jacoco plugin in the $SONAR_HOME/extensions/plugin directory
Doing the business (getting coverage report - integration tests)
- Modify the pom.xml in $MIFOS_HOME/applicaton directory by adding the following line to maven-surefire-plugin configuration element
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<argLine>-javaagent:${jacoco.agent.path}=destfile=${jacoco.file.path},includes=org.mifos.*,excludes=*_javaassist_*</argLine> * |
- Run
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- acceptance
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- tests,
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- supply
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- the
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- arguments
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- defined
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- in
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- the
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- maven-surefire-plugin
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- above
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mvn \-Djacoco.agent.path="/path/to/jacoco/library/jacocoagent.jar" \-Djacoco.file.path="/path/to/coverage/dump/jacoco.exec" clean install * |
- Run
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- sonar
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- analysis
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- on
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- entire
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- project
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mvn \-Dsonar.jacoco.itReportPath="/home/kojo/jack.exec" sonar:sonar \-Dsonar.dynamicAnalysis consider using \ |
consider using -Dsonar.dynamicAnalysis=reuseReports
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to considerably reduce the time taken for code analysis
- Go to sonar web interface and click on 'configure widgets' to add IT coverage widget
Miscellaneous
Jacoco Ant tasks
References
- Java agent
- Jacoco