Question

In running some JUnit tests I start with the following to set up Log4J:

BasicConfigurator.configure()

I’m then calling the following via Commons Logging:

LogFactory.getLogger(this.getClass()).fatal(exception)

This doesn’t print stack traces though (only the exception message).

I need to know what steps are necessary to print stack traces via the simplified logging setup used in JUnit tests? I would prefer not to have to fully configure Log4J just for JUnit tests, but if I must, let me know.

Answer 1

This is nothing to do with the logger configurations.

Read the javadoc for the fatal(Object) method. It says:

“WARNING Note that passing a Throwable to this method will print the name of the Throwable but no stack trace. To print a stack trace use the fatal(Object, Throwable) form instead.”

If you want the logs to include a stacktrace, you must use the 2 argument version of the method. This applies to the corresponding methods for other log levels as well.