"true", refs, null, config, null );
loggerConfig.addAppender(appender, null, null);
config.addLogger("org.apache.logging.log4j", loggerConfig);
ctx.updateLoggers();
Logger logger = ctx.getLogger(CustomConfigurationTest.class.getName());
logger.info("This is a test");
final File file = new File(LOG_FILE);
assertTrue("log file not created", file.exists());
assertTrue("No data logged", file.length() > 0);
}