### Question:
Slf4JLogger extends AbstractInternalLogger { public boolean isDebugEnabled() { return logger.isDebugEnabled(); } 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 testIsDebugEnabled() { Logger mock = createStrictMock(Logger.class); expect(mock.isDebugEnabled()).andReturn(true); replay(mock); InternalLogger logger = new Slf4JLogger(mock); assertTrue(logger.isDebugEnabled()); verify(mock); }