[对谈录]是否可以把logger的输出视为一个方法的output, 并针对它进行单元测试？

import org.junit.Test;

import java.util.logging.*;

class MyLogHandler extends Handler{
    private LogRecord record;

	@Override
	public void flush() {
	}

	@Override
	public void close() throws SecurityException {
	}

	public void publish(LogRecord record) {
		this.record = record;
	}

	public String getMessage() {
		return record.getMessage();
	}

}

 class MyTemp {

	static Logger logger = Logger.getLogger(MyTemp.class.getName());
    public MyTemp(){
    	
    	MyTemp.logger.info("abcdefg");
    	
    }
}
public class MyTest {
	@Test
	public void testLogMessage() {
		Handler h = new MyLogHandler();
		MyTemp.logger.addHandler(h);
		MyTemp.logger.setLevel(Level.FINEST);// 这个设定最重要
		MyTemp t = new MyTemp();

		System.out.println(((MyLogHandler) h).getMessage());
	}
   
}