编程实现NextDay 函数。Y、M、D分别存储当前的年、月、日String NextDayString Y String M String D根据当前日期输出下一天的日期。现在要测试NextDay函数分别用语句覆盖、判定覆盖、条件覆盖、判定条件覆盖、条件组合覆盖设计测试用例并编写对应Junit代码进行测试。

语句覆盖：

测试用例1：Y="2022"，M="02"，D="28"，期望输出为"2022-03-01" 测试用例2：Y="2020"，M="02"，D="28"，期望输出为"2020-02-29" 测试用例3：Y="2022"，M="12"，D="31"，期望输出为"2023-01-01"

判定覆盖：

测试用例1：Y="2000"，M="02"，D="28"，期望输出为"2000-02-29" 测试用例2：Y="2100"，M="02"，D="28"，期望输出为"2100-03-01" 测试用例3：Y="2022"，M="04"，D="31"，期望输出为"日期错误"

条件覆盖：

判定条件覆盖：

条件组合覆盖：

Junit代码：

import org.junit.Assert;
import org.junit.Test;

public class NextDayTest {
    @Test
    public void testNextDay_statement(){
        Assert.assertEquals("2022-03-01", NextDay.NextDay("2022", "02", "28"));
        Assert.assertEquals("2020-02-29", NextDay.NextDay("2020", "02", "28"));
        Assert.assertEquals("2023-01-01", NextDay.NextDay("2022", "12", "31"));
    }

    @Test
    public void testNextDay_decision(){
        Assert.assertEquals("2000-02-29", NextDay.NextDay("2000", "02", "28"));
        Assert.assertEquals("2100-03-01", NextDay.NextDay("2100", "02", "28"));
        Assert.assertEquals("日期错误", NextDay.NextDay("2022", "04", "31"));
    }

    @Test
    public void testNextDay_condition(){
        Assert.assertEquals("2000-02-29", NextDay.NextDay("2000", "02", "28"));
        Assert.assertEquals("2100-03-01", NextDay.NextDay("2100", "02", "28"));
        Assert.assertEquals("日期错误", NextDay.NextDay("2022", "04", "31"));
    }

    @Test
    public void testNextDay_decisionCondition(){
        Assert.assertEquals("2000-02-29", NextDay.NextDay("2000", "02", "28"));
        Assert.assertEquals("2100-03-01", NextDay.NextDay("2100", "02", "28"));
        Assert.assertEquals("日期错误", NextDay.NextDay("2022", "04", "31"));
    }

    @Test
    public void testNextDay_conditionCombination(){
        Assert.assertEquals("2000-02-29", NextDay.NextDay("2000", "02", "28"));
        Assert.assertEquals("2100-03-01", NextDay.NextDay("2100", "02", "28"));
        Assert.assertEquals("日期错误", NextDay.NextDay("2022", "04", "31"));
    }
}
``

编程实现NextDay 函数。Y、M、D分别存储当前的年、月、日String NextDayString Y String M String D根据当前日期输出下一天的日期。现在要测试NextDay函数分别用语句覆盖、判定覆盖、条件覆盖、判定条件覆盖、条件组合覆盖设计测试用例并编写对应Junit代码进行测试。