@Test
    public void testLog4jOverJclConversion() {
        // running log4j to slf4j conversion
        LineConverter log4jConverter = new LineConverter(new Log4jRuleSet());

        // no changes on LogFactory import
        assertEquals("import org.apache.commons.logging.LogFactory;", log4jConverter.getOneLineReplacement("import org.apache.commons.logging.LogFactory;"));
        // no changes on Log import
        assertEquals("import org.apache.commons.logging.Log;", log4jConverter.getOneLineReplacement("import org.apache.commons.logging.Log;"));
        // no changes on Log instanciation using Logfactory.getLog
        assertEquals("public static Log mylog1 = LogFactory.getLog(MyClass.class);",
                        log4jConverter.getOneLineReplacement("public static Log mylog1 = LogFactory.getLog(MyClass.class);"));
        // no changes on log instanciation using LogFactory.getFactory().getInstance
        assertEquals("public Log mylog=LogFactory.getFactory().getInstance(MyClass.class);",
                        log4jConverter.getOneLineReplacement("public Log mylog=LogFactory.getFactory().getInstance(MyClass.class);"));

    }
This test shows that performing Log4j to SLF4J conversion has no impact on
JCL implementation
slf4j-migrator/src/test/java/org/slf4j/migrator/line/NoConversionTest.java