RojerChen's Blog

public static Date StringToDate(String dateString){
  SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
  return format.parse(dateString,new ParsePosition(1));
}

public static double DateDiffHour(Date dateStart,Date dateEnd,Integer second,Integer roundN){      
        long number1 = dateEnd.getTime() - dateStart.getTime(); 
        long number2 = second * 1000;        
        BigDecimal b1 = new BigDecimal(number1);
        BigDecimal b2 = new BigDecimal(number2);
        return b1.divide(b2,roundN,BigDecimal.ROUND_HALF_UP).doubleValue();
}

Date start = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date end = new Date();
long diff = end.getTime()-start.getTime();
System.out.println(diff);

private String GetTime(){
 SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss.SSS");
 Calendar now = Calendar.getInstance();
 timeFormat.setTimeZone(TimeZone.getTimeZone("GMT+8"));
 return timeFormat.format(now.getTime());
}

public class eCommerical
{
    public bool isTimeToDiscount()
    {
        bool result = DateTime.Today.DayOfWeek == DayOfWeek.Friday;
        return result;
    }
}

[TestMethod]
public void Test_Is_Time_To_Discount()
{
    //arrange
    bool expected = true;
    MyLibrary.eCommerical eCom = new eCommerical();
 
    //act
    bool actual = eCom.isTimeToDiscount();
 
    //assert
    Assert.AreEqual(expected,actual);
}