Logging level under maven surefire

Question

I\'m unable to adjust java logging\'s logging level. I\'m using maven surefire (mvn test), and trying to adjust from the default INFO to e.g. FINEST.

I have logging.

Answer 1

I was looking at this exact issue, but did not want a project configuration (pom.xml) file change for every time I need specific logging on a test.

The -D property works from maven command line.

Thus you can select the logging configuration file from the command line:

mvn -Djava.util.logging.config.file=`enter filename here` test

If you are using the generic level denominator .level=FINEST be aware that 3rd party logging will also appear at that level.

To disable or set the maven or 3rd party logging to a specific level use explicit log level selection for those classes in the selected log configuration file.

I have a lot of log lines from com.google.inject.....

aug 08, 2014 12:14:33 PM com.google.inject.internal.util.$Stopwatch resetAndLog
FINE: Instance member validation: 3ms
aug 08, 2014 12:14:33 PM com.google.inject.internal.util.$Stopwatch resetAndLog
FINE: Provider verification: 1ms
aug 08, 2014 12:14:33 PM com.google.inject.internal.util.$Stopwatch resetAndLog
FINE: Static member injection: 1ms

So I add:

com.google.inject.level=INFO

to the file. Remember that the level setting is recursive to all subclasses. Thus com.level=NONE will disable all logging for all loggers from the com domain.

Combining this with the test select feature -Dtest=... in the surefire plugin described here is very good for isolating bugs and errors.