Java:测试系统输出,包括带有assertEquals的"新行"

我目前正在为战略设计模式编写单元测试.我正在将系统输出与assertEquals方法中的字符串进行比较.输出看起来相同但我的测试仍然失败... 我在想我忘记了与新线或标签有关的事情？

我的单元测试:

import static org.junit.Assert.*;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class MiniDuck1Test {

    private final ByteArrayOutputStream outContent = new ByteArrayOutputStream();
    private final ByteArrayOutputStream errContent = new ByteArrayOutputStream();

    @Before
    public void setUpStreams() {
        System.setOut(new PrintStream(outContent));
        System.setErr(new PrintStream(errContent));
    }

    @After
    public void cleanUpStreams() {
        System.setOut(null);
        System.setErr(null);
    }

    @Test
    public void testDuck1() {       
        Duck mallard = new MallardDuck();
        mallard.performQuack();
        mallard.performFly();

        Duck model = new ModelDuck();
        model.performFly();
        model.setFlyBehavior(new FlyRocketPowered());
        model.performFly();

        assertEquals("Quack\nI'm flying!!\nI can't fly\nI'm flying with a rocket", outContent.toString().trim());
    }
}

输出(第二行和第三行显示为红色):

Quack
I'm flying!!
I can't fly
I'm flying with a rocket

编辑:

最快的解决方案似乎是在我的"\n"前添加一个"\ r".多个答案告诉我,这需要在Windows上完成.应用此之后,我的assertEquals看起来像:

assertEquals("Quack\r\nI'm flying!!\r\nI can't fly\r\nI'm flying with a rocket", outContent.toString().trim());

另外:我忘了提到大部分代码都来自于Eric Freeman,Elisabeth Robson,Bert Bates和Kathy Sierra的书"Head First Design Patterns".