Code coverage using Surefire, TestNG, Jacoco and Sonar

Goal

• mvn install should not require any external environment and should be fast.
• Possible to run a certain group of tests from commandline.
• CI server should run all tests, calculate test coverage and update Sonar.
• Test coverage and number of tests in Sonar must be correct.
• Nice if tests are not run more times than necessary.

Surefire plugin in parent pom

Disable all tests in default surefire config.

Add profiles which runs different groups of tests

Notice that defaulttests profile is activated if testgroup is not set.

Profile for code coverage

Gotchas

There seems to be some problems related to argLine:

http://osdir.com/ml/issues.maven.apache.org/2012-05/msg00394.html
http://stackoverflow.com/questions/12269558/maven-jacoco-plugin-error
https://github.com/jacoco/jacoco/issues/44
http://jira.codehaus.org/browse/MEVENIDE-435'

Sonar and TestNG

• Sonar doesn't support TestNG test reports, but TestNG can generate reports in JUnit format.

• Maven generates the test coverage reports and reuse these in Sonar.