CinemaDemo/src/test/java/com/example/cinema/blImpl/StatisticsServiceImplTest.java

package com.example.cinema.blImpl;

import com.example.cinema.bl.StatisticsService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.text.ParseException;
import java.util.Calendar;
import java.util.Date;

import static org.junit.Assert.*;

/**
 * @author fjj
 * @date 2019/4/16 3:05 PM
 */
@RunWith(SpringRunner.class)
@SpringBootTest
public class StatisticsServiceImplTest {
    @Autowired
    private StatisticsService statisticsService;
//    @Test
//    public void getScheduleRateByDate() throws ParseException {
//        System.out.println(getNumDayBeforeDate(new Date(),-5));
//        statisticsService.getScheduleRateByDate(getNumDayBeforeDate(new Date(),-5));
//    }

    /**
     * 获得num天后的日期
     * @param oldDate
     * @param num
     * @return
     * @throws ParseException
     */
    Date getNumDayBeforeDate(Date oldDate, int num) throws ParseException {
        Calendar calendarTime = Calendar.getInstance();
        calendarTime.setTime(oldDate);
        calendarTime.add(Calendar.DAY_OF_YEAR, num);
        return calendarTime.getTime();
    }
}