### Question:
Slf4JLogger extends AbstractInternalLogger { public void info(String msg) { logger.info(msg); } Slf4JLogger(Logger logger); void debug(String msg); void debug(String msg, Throwable cause); void error(String msg); void error(String msg, Throwable cause); void info(String msg); void info(String msg, Throwable cause); boolean isDebugEnabled(); boolean isErrorEnabled(); boolean isInfoEnabled(); boolean isWarnEnabled(); void warn(String msg); void warn(String msg, Throwable cause); @Override String toString();  }### Answer:
@Test public void testInfo() { Logger mock = createStrictMock(Logger.class); mock.info("a"); replay(mock); InternalLogger logger = new Slf4JLogger(mock); logger.info("a"); verify(mock); }
@Test public void testInfoWithException() { Logger mock = createStrictMock(Logger.class); mock.info("a", e); replay(mock); InternalLogger logger = new Slf4JLogger(mock); logger.info("a", e); verify(mock); }