private void ResolveOverflowingDateShould_ResolveResolveOverflowingDate_WhenDaysAndMonthsOverFlowYearAndMonth()
{
var initialDate = new SolarLunarNameSimple(1700, 13, 9);
var nextDate = new SolarLunarNameSimple(1701, 0, 9);
TestTemplate(initialDate, nextDate);
}
private void NextMonthShould_ResolveNextMonth_WhenDaysAndMonthsNotOverFlowMonthOrYear()
{
var initialDate = new SolarLunarNameSimple(1700, 0, 1);
var nextDate = new SolarLunarNameSimple(1700, 0, 1);
TestTemplate(initialDate, nextDate);
}
private void ResolveOverflowingDateShould_ResolveResolveOverflowingDate_WhenDaysOverFlowMonth()
{
var initialDate = new SolarLunarNameSimple(1700, 0, 20);
var nextDate = new SolarLunarNameSimple(1700, 1, 1);
TestTemplate(initialDate, nextDate);
}
private void NextMonthShould_ResolveNextMonth_WhenMonthsOverFlowYear()
{
var initialDate = new SolarLunarNameSimple(1700, 13, 7);
var nextDate = new SolarLunarNameSimple(1701, 0, 7);
TestTemplate(initialDate, nextDate);
}
public DateTime ConvertSolarLunarName(SolarLunarNameSimple solarLunarName)
{
try{
return(ConvertSolarLunarNameExact(solarLunarName));
}
catch {
var resolvedDate = ResolveOverflowingDate(solarLunarName);
return(ConvertSolarLunarNameExact(resolvedDate));
}
}
private void TestTemplate(SolarLunarNameSimple initialDate, SolarLunarNameSimple nextDate)
{
var nextSolarLunarDate = dp.ResolveOverflowingDate(initialDate);
var result =
nextSolarLunarDate.Year == nextDate.Year &&
nextSolarLunarDate.LunarMonth == nextDate.LunarMonth &&
nextSolarLunarDate.LunarDay == nextDate.LunarDay;
Assert.True(result, "Should return expected data.");
}
public SolarLunarNameSimple ResolveOverflowingDate(SolarLunarNameSimple solarLunarNameSimple)
{
var reslovedMonth = ResolveOverflowingDateInner(solarLunarNameSimple);
if (
reslovedMonth.Year == solarLunarNameSimple.Year &&
reslovedMonth.LunarMonth == solarLunarNameSimple.LunarMonth &&
reslovedMonth.LunarDay == solarLunarNameSimple.LunarDay
)
{
return(reslovedMonth);
}
else
{
return(ResolveOverflowingDateInner(reslovedMonth));
}
}
public DateTime ConvertSolarLunarNameExact(SolarLunarNameSimple solarLunarName)
{
int daysInMonth = db.GetMonthData((ValidYear)solarLunarName.Year, (ValidLunarMonth)solarLunarName.LunarMonth).Days;
if (daysInMonth < solarLunarName.LunarDay)
{
throw new DayDoesNotExistException(solarLunarName.Year, solarLunarName.LunarMonth, solarLunarName.LunarDay, daysInMonth);
}
;
var startOfYear = new DateTime(solarLunarName.Year, 1, 1);
DateTime newMoon = db.GetYearData(solarLunarName.Year)
.OrderBy(x => x.FirstDay)
.Where((_, index) => index == solarLunarName.LunarMonth)
.Select(x => x.FirstDay)
.First();
var solarDateTime = newMoon.AddDays(solarLunarName.LunarDay - 1);
return(new DateTime(solarDateTime.Year, solarDateTime.Month, solarDateTime.Day));
}
private SolarLunarNameSimple ResolveOverflowingDateInner(SolarLunarNameSimple solarLunarNameSimple)
{
var data = db.GetYearData(solarLunarNameSimple.Year);
var daysOfMonth =
data
.Where((_, index) => index == solarLunarNameSimple.LunarMonth)
.Select(x => x.Days)
.FirstOrDefault();
int month = solarLunarNameSimple.LunarMonth;
int daysRemaining;
int dayDifference = solarLunarNameSimple.LunarDay - daysOfMonth;
var year = solarLunarNameSimple.Year;
if (dayDifference > 0)
{
daysRemaining = dayDifference;
if (daysOfMonth != 0)
{
month += 1;
}
}
else
{
daysRemaining = solarLunarNameSimple.LunarDay;
}
if (month > data.Count() - 1)
{
year += 1;
month = month - data.Count();
}
return(new SolarLunarNameSimple(year, month, daysRemaining));
}
//TODO This is not really a test of ResolveOverflowingDate which does not throw exceptions of its own
// This may be covered by tests on its dependency the calendar client
private void ExceptionTemplate(int year, int lunarMonth, int lunarDay)
{
var solarLunarDate = new SolarLunarNameSimple(year, lunarMonth, lunarDay);
Assert.Throws <YearOutOfRangeException>(() => dp.ResolveOverflowingDate(solarLunarDate));
}
public DateTime ConvertSolarLunarNameExact(int year, int month, int day)
{
var solarLunarName = new SolarLunarNameSimple(year, month, day);
return(ConvertSolarLunarNameExact(solarLunarName));
}
public SolarLunarNameSimple NextMonth(SolarLunarNameSimple solarLunarNameSimple)
{
return(ResolveOverflowingDate(solarLunarNameSimple));
}
