Add TimeToJDate with tests
This commit is contained in:
Petar Kapriš
parent
d862f6c35d
commit
6f6b203c5b
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@ -120,3 +120,26 @@ func JDateToTime(d Date) time.Time {
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d = dateDiff(d, offset)
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return time.Date(d.year, d.month, d.day, 0, 0, 0, 0, time.UTC)
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}
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func TimeToJDate(t time.Time) Date {
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offset := -2
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// The date when the offset changes in the gregorian calendar is always
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// 1st of March, so we can always just check the year, and see if we're
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// past 1st of March year
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year := t.Year()
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if t.Month() < time.March {
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year--
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}
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borderYear := 100
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for year >= borderYear {
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if borderYear%400 != 0 {
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offset++
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}
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borderYear += 100
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}
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d := Date{t.Year(), t.Month(), t.Day()}
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d = dateDiff(d, -offset)
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return d
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}
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@ -145,3 +145,82 @@ func TestJDateToTime(t *testing.T) {
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})
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}
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}
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func TestTimeToJDate(t *testing.T) {
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gDate := func(year int, month time.Month, day int) time.Time {
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return time.Date(year, month, day, 0, 0, 0, 0, time.UTC)
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}
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var tests = []struct {
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gd time.Time
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want Date
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}{
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{gDate(100, time.February, 27), Date{100, time.February, 29}},
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{gDate(100, time.February, 28), Date{100, time.March, 1}},
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{gDate(100, time.March, 1), Date{100, time.March, 2}},
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{gDate(200, time.February, 27), Date{200, time.February, 28}},
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{gDate(200, time.February, 28), Date{200, time.February, 29}},
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{gDate(200, time.March, 1), Date{200, time.March, 1}},
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{gDate(300, time.February, 28), Date{300, time.February, 28}},
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{gDate(300, time.March, 1), Date{300, time.February, 29}},
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{gDate(300, time.March, 2), Date{300, time.March, 1}},
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{gDate(500, time.March, 1), Date{500, time.February, 28}},
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{gDate(500, time.March, 2), Date{500, time.February, 29}},
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{gDate(500, time.March, 3), Date{500, time.March, 1}},
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{gDate(600, time.March, 2), Date{600, time.February, 28}},
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{gDate(600, time.March, 3), Date{600, time.February, 29}},
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{gDate(600, time.March, 4), Date{600, time.March, 1}},
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{gDate(700, time.March, 3), Date{700, time.February, 28}},
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{gDate(700, time.March, 4), Date{700, time.February, 29}},
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{gDate(700, time.March, 5), Date{700, time.March, 1}},
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{gDate(900, time.March, 4), Date{900, time.February, 28}},
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{gDate(900, time.March, 5), Date{900, time.February, 29}},
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{gDate(900, time.March, 6), Date{900, time.March, 1}},
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{gDate(1000, time.March, 5), Date{1000, time.February, 28}},
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{gDate(1000, time.March, 6), Date{1000, time.February, 29}},
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{gDate(1000, time.March, 7), Date{1000, time.March, 1}},
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{gDate(1100, time.March, 6), Date{1100, time.February, 28}},
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{gDate(1100, time.March, 7), Date{1100, time.February, 29}},
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{gDate(1100, time.March, 8), Date{1100, time.March, 1}},
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{gDate(1300, time.March, 7), Date{1300, time.February, 28}},
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{gDate(1300, time.March, 8), Date{1300, time.February, 29}},
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{gDate(1300, time.March, 9), Date{1300, time.March, 1}},
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{gDate(1400, time.March, 8), Date{1400, time.February, 28}},
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{gDate(1400, time.March, 9), Date{1400, time.February, 29}},
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{gDate(1400, time.March, 10), Date{1400, time.March, 1}},
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{gDate(1500, time.March, 9), Date{1500, time.February, 28}},
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{gDate(1500, time.March, 10), Date{1500, time.February, 29}},
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{gDate(1500, time.March, 11), Date{1500, time.March, 1}},
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{gDate(1582, time.October, 14), Date{1582, time.October, 4}},
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{gDate(1582, time.October, 15), Date{1582, time.October, 5}},
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{gDate(1582, time.October, 16), Date{1582, time.October, 6}},
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{gDate(1700, time.February, 28), Date{1700, time.February, 18}},
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{gDate(1700, time.March, 1), Date{1700, time.February, 19}},
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{gDate(1700, time.March, 10), Date{1700, time.February, 28}},
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{gDate(1700, time.March, 11), Date{1700, time.February, 29}},
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{gDate(1700, time.March, 12), Date{1700, time.March, 1}},
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{gDate(1800, time.February, 28), Date{1800, time.February, 17}},
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{gDate(1800, time.March, 1), Date{1800, time.February, 18}},
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{gDate(1800, time.March, 11), Date{1800, time.February, 28}},
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{gDate(1800, time.March, 12), Date{1800, time.February, 29}},
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{gDate(1800, time.March, 13), Date{1800, time.March, 1}},
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{gDate(1900, time.February, 28), Date{1900, time.February, 16}},
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{gDate(1900, time.March, 1), Date{1900, time.February, 17}},
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{gDate(1900, time.March, 12), Date{1900, time.February, 28}},
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{gDate(1900, time.March, 13), Date{1900, time.February, 29}},
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{gDate(1900, time.March, 14), Date{1900, time.March, 1}},
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{gDate(2100, time.February, 28), Date{2100, time.February, 15}},
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{gDate(2100, time.March, 1), Date{2100, time.February, 16}},
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{gDate(2100, time.March, 13), Date{2100, time.February, 28}},
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{gDate(2100, time.March, 14), Date{2100, time.February, 29}},
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}
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for _, tt := range tests {
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testname := fmt.Sprintf("%v, %v", tt.gd, tt.want)
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t.Run(testname, func(t *testing.T) {
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ans := TimeToJDate(tt.gd)
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if ans != tt.want {
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t.Errorf("got %v, want %v", ans, tt.want)
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}
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})
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}
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}
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