When I\'m running a complete test suite, it would be helpful if exceptions that caused a test to fail would appear in my (SLF4J-)log. What is the best method to achieve this
Look outside the box... What are you using to run the tests? Most environments for running tests (e.g., Ant, Jenkins, Maven, etc.) have means for using a testrunner that outputs an XML file, with support for aggregating the XML files from a suite into a comprehensive report.