Java使用junit框架进行代码测试过程详解

package com.example;
import java.text.SimpleDateFormat;
import java.util.Date;
public class DateTimeUtil {
    /**
     * 时间对象格式化为字符串
     *
     * @param date
     * @return
     */
    public static String toDateString(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        return formatter.format(date);
    }
    public static void main(String[] args) {
        Date now = new Date();
        String nowString = DateTimeUtil.toDateString(now);
        System.out.println(nowString);
    }
}

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.13.2</version>
    <scope>test</scope>
</dependency>

package com.example;
import java.text.SimpleDateFormat;
import java.util.Date;
public class DateTimeUtil {
    /**
     * 时间对象格式化为字符串
     *
     * @param date
     * @return
     */
    public static String toDateString(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        return formatter.format(date);
    }
}

package com.example;
import org.junit.Test;
import java.util.Date;
public class DateTimeUtilTest {
    @Test
    public void toDateString() {
        Date now = new Date();
        String nowString = DateTimeUtil.toDateString(now);
        System.out.println(nowString);
    }
}