@Before
    public void setUp() throws Exception {
        root = org.apache.log4j.Logger.getRootLogger();
        root.addAppender(listAppender);
    }
Test whether invoking the SLF4J API causes problems or not.

@author Ceki Gulcu
slf4j-reload4j/src/test/java/org/slf4j/reload4j/InvocationTest.java