add rest of kr holidays

- kr.BeforeLunarNewYear
- kr.AfterLunarNewYear
- kr.BeforeChuseok
- kr.AfterChuseok

v2/kr/kr_holidays.go

@@ -36,6 +36,16 @@ var (
     // NewYear represents New Year's Day on 1-Jan
     NewYear = aa.NewYear.Clone(&cal.Holiday{Name: "새해 첫날", Type: cal.ObservancePublic})
 
+    // BeforeLunarNewYear represents 설전날 before on the Lunar 1-Jan
+    BeforeLunarNewYear = &cal.Holiday{
+        Name:  "설전날",
+        Type:  cal.ObservancePublic,
+        Month: time.January,
+        Day:   1,
+        Lunar: true,
+        Func:  CalcBeforeDayOfLunarMonth,
+    }
+
     // LunarNewYear represents 설날 on the Lunar 1-Jan
     LunarNewYear = &cal.Holiday{
         Name:     "설날",
@@ -47,6 +57,16 @@ var (
         Func:     CalcDayOfLunarMonth,
     }
 
+    // AfterLunarNewYear represents 설다음날 after on the Lunar 1-Jan
+    AfterLunarNewYear = &cal.Holiday{
+        Name:  "설다음날",
+        Type:  cal.ObservancePublic,
+        Month: time.January,
+        Day:   1,
+        Lunar: true,
+        Func:  CalcAfterDayOfLunarMonth,
+    }
+
     // IndependenceMovementDay represents 3.1절 on the 1-Mar
     IndependenceMovementDay = &cal.Holiday{
         Name:  "3.1절",
@@ -94,6 +114,16 @@ var (
         Func:  cal.CalcDayOfMonth,
     }
 
+    // BeforeChuseok represents 추석전날 before on the Lunar 15-August
+    BeforeChuseok = &cal.Holiday{
+        Name:  "추석전날",
+        Type:  cal.ObservancePublic,
+        Month: time.August,
+        Day:   15,
+        Lunar: true,
+        Func:  CalcBeforeDayOfLunarMonth,
+    }
+
     // Chuseok represents 추석 on the Lunar 15-August
     Chuseok = &cal.Holiday{
         Name:     "추석",
@@ -105,6 +135,16 @@ var (
         Func:     CalcDayOfLunarMonth,
     }
 
+    // AfterChuseok represents 추석전날 after on the Lunar 15-August
+    AfterChuseok = &cal.Holiday{
+        Name:  "추석다음날",
+        Type:  cal.ObservancePublic,
+        Month: time.August,
+        Day:   15,
+        Lunar: true,
+        Func:  CalcAfterDayOfLunarMonth,
+    }
+
     // FoundationDay represents 개천절 on the 3-October
     FoundationDay = &cal.Holiday{
         Name:  "개천절",
@@ -129,13 +169,17 @@ var (
     // Holidays provides a list of the standard national holidays
     Holidays = []*cal.Holiday{
         NewYear,
+        BeforeLunarNewYear,
         LunarNewYear,
+        AfterLunarNewYear,
         IndependenceMovementDay,
         BuddhasDay,
         ChildrensDay,
         MemorialDay,
         LiberationDay,
+        BeforeChuseok,
         Chuseok,
+        AfterChuseok,
         FoundationDay,
         HangeulDay,
         ChristmasDay,
@@ -147,3 +191,15 @@ var (
 func CalcDayOfLunarMonth(h *cal.Holiday, year int) time.Time {
     return Lunar2Solar(year, int(h.Month), h.Day, false)
 }
+
+// CalcBeforeDayOfLunarMonth a before day of specific LunarDate.
+// 1/1 before day maybe become 12/29 or 12/30
+// so treat before day as solar calendar
+func CalcBeforeDayOfLunarMonth(h *cal.Holiday, year int) time.Time {
+    return Lunar2Solar(year, int(h.Month), h.Day, false).Add(time.Hour * 24 * -1)
+}
+
+// CalcAfterDayOfLunarMonth a after day of specific LunarDate.
+func CalcAfterDayOfLunarMonth(h *cal.Holiday, year int) time.Time {
+    return Lunar2Solar(year, int(h.Month), h.Day, false).Add(time.Hour * 24)
+}

v2/kr/kr_holidays_test.go

@@ -30,6 +30,15 @@ func TestHolidays(t *testing.T) {
         {NewYear, 2021, d(2021, 1, 1), d(2021, 1, 1)},
         {NewYear, 2022, d(2022, 1, 1), d(2022, 1, 1)},
 
+        {BeforeLunarNewYear, 2015, d(2015, 2, 18), d(2015, 2, 18)},
+        {BeforeLunarNewYear, 2016, d(2016, 2, 7), d(2016, 2, 7)},
+        {BeforeLunarNewYear, 2017, d(2017, 1, 27), d(2017, 1, 27)},
+        {BeforeLunarNewYear, 2018, d(2018, 2, 15), d(2018, 2, 15)},
+        {BeforeLunarNewYear, 2019, d(2019, 2, 4), d(2019, 2, 4)},
+        {BeforeLunarNewYear, 2020, d(2020, 1, 24), d(2020, 1, 24)},
+        {BeforeLunarNewYear, 2021, d(2021, 2, 11), d(2021, 2, 11)},
+        {BeforeLunarNewYear, 2022, d(2022, 1, 31), d(2022, 1, 31)},
+
         {LunarNewYear, 2015, d(2015, 2, 19), d(2015, 2, 19)},
         {LunarNewYear, 2016, d(2016, 2, 8), d(2016, 2, 8)},
         {LunarNewYear, 2017, d(2017, 1, 28), d(2017, 1, 30)},
@@ -39,6 +48,15 @@ func TestHolidays(t *testing.T) {
         {LunarNewYear, 2021, d(2021, 2, 12), d(2021, 2, 12)},
         {LunarNewYear, 2022, d(2022, 2, 1), d(2022, 2, 1)},
 
+        {AfterLunarNewYear, 2015, d(2015, 2, 20), d(2015, 2, 20)},
+        {AfterLunarNewYear, 2016, d(2016, 2, 9), d(2016, 2, 9)},
+        {AfterLunarNewYear, 2017, d(2017, 1, 29), d(2017, 1, 29)},
+        {AfterLunarNewYear, 2018, d(2018, 2, 17), d(2018, 2, 17)},
+        {AfterLunarNewYear, 2019, d(2019, 2, 6), d(2019, 2, 6)},
+        {AfterLunarNewYear, 2020, d(2020, 1, 26), d(2020, 1, 26)},
+        {AfterLunarNewYear, 2021, d(2021, 2, 13), d(2021, 2, 13)},
+        {AfterLunarNewYear, 2022, d(2022, 2, 2), d(2022, 2, 2)},
+
         {IndependenceMovementDay, 2015, d(2015, 3, 1), d(2015, 3, 1)},
         {IndependenceMovementDay, 2016, d(2016, 3, 1), d(2016, 3, 1)},
         {IndependenceMovementDay, 2017, d(2017, 3, 1), d(2017, 3, 1)},
@@ -84,6 +102,14 @@ func TestHolidays(t *testing.T) {
         {LiberationDay, 2021, d(2021, 8, 15), d(2021, 8, 15)},
         {LiberationDay, 2022, d(2022, 8, 15), d(2022, 8, 15)},
 
+        {BeforeChuseok, 2016, d(2016, 9, 14), d(2016, 9, 14)},
+        {BeforeChuseok, 2017, d(2017, 10, 3), d(2017, 10, 3)},
+        {BeforeChuseok, 2018, d(2018, 9, 23), d(2018, 9, 23)},
+        {BeforeChuseok, 2019, d(2019, 9, 12), d(2019, 9, 12)},
+        {BeforeChuseok, 2020, d(2020, 9, 30), d(2020, 9, 30)},
+        {BeforeChuseok, 2021, d(2021, 9, 20), d(2021, 9, 20)},
+        {BeforeChuseok, 2022, d(2022, 9, 9), d(2022, 9, 9)},
+
         {Chuseok, 2016, d(2016, 9, 15), d(2016, 9, 15)},
         {Chuseok, 2017, d(2017, 10, 4), d(2017, 10, 4)},
         {Chuseok, 2018, d(2018, 9, 24), d(2018, 9, 24)},
@@ -92,6 +118,14 @@ func TestHolidays(t *testing.T) {
         {Chuseok, 2021, d(2021, 9, 21), d(2021, 9, 21)},
         {Chuseok, 2022, d(2022, 9, 10), d(2022, 9, 12)},
 
+        {AfterChuseok, 2016, d(2016, 9, 16), d(2016, 9, 16)},
+        {AfterChuseok, 2017, d(2017, 10, 5), d(2017, 10, 5)},
+        {AfterChuseok, 2018, d(2018, 9, 25), d(2018, 9, 25)},
+        {AfterChuseok, 2019, d(2019, 9, 14), d(2019, 9, 14)},
+        {AfterChuseok, 2020, d(2020, 10, 2), d(2020, 10, 2)},
+        {AfterChuseok, 2021, d(2021, 9, 22), d(2021, 9, 22)},
+        {AfterChuseok, 2022, d(2022, 9, 11), d(2022, 9, 11)},
+
         {FoundationDay, 2015, d(2015, 10, 3), d(2015, 10, 3)},
         {FoundationDay, 2016, d(2016, 10, 3), d(2016, 10, 3)},
         {FoundationDay, 2017, d(2017, 10, 3), d(2017, 10, 3)},