Following a recent article on how to Test System.out with JUnit, here’s a follow up on how to test log4J with JUnit. This article describes a technique to test log4J output in a JUnit test by adding a custom appender. This allows us to verify that log4j output contains expected Strings.
Stuart 'Stevie' Leitch's blog on Software Development, Java Technologies, Security and Testing
Don't Panic! blog and example code by Stuart 'Stevie' Leitch is licensed under a Creative Commons Attribution 3.0 Unported License.The views expressed on this blog are my own and do not necessarily reflect the views of my employers, past or present.