### Question:
CommonsLogger extends AbstractInternalLogger { public boolean isDebugEnabled() { return logger.isDebugEnabled(); } CommonsLogger(Log logger, String loggerName); 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() { Log mock = createStrictMock(Log.class); expect(mock.isDebugEnabled()).andReturn(true); replay(mock); InternalLogger logger = new CommonsLogger(mock, "foo"); assertTrue(logger.isDebugEnabled()); verify(mock); }