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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| package datetime | ||
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| import "time" | ||
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| type Period struct { | ||
| Begin time.Time `json:"start" yaml:"start"` | ||
| End time.Time `json:"end" yaml:"end"` | ||
| } | ||
|
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| const maxNsec = 999999999 | ||
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| func NewPeriod(a, b time.Time) Period { | ||
| return Period{Begin: StartOfDay(a), End: EndOfDay(b)} | ||
| } | ||
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| func StartOfDay(t time.Time) time.Time { | ||
| return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, time.UTC) | ||
| } | ||
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| func EndOfDay(t time.Time) time.Time { | ||
| return time.Date(t.Year(), t.Month(), t.Day(), 23, 59, 59, maxNsec, time.UTC) | ||
| } | ||
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| func MonthOf(t time.Time) Period { | ||
| var ( | ||
| begin = time.Date(t.Year(), t.Month(), 1, 0, 0, 0, 0, time.UTC) | ||
| finalDay = time.Date(t.Year(), t.Month()+1, 0, 0, 0, 0, 0, time.UTC).Day() | ||
| end = time.Date(t.Year(), t.Month(), finalDay, 23, 59, 59, maxNsec, time.UTC) | ||
| ) | ||
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| return Period{Begin: begin, End: end} | ||
| } | ||
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| func PreviousMonthOf(t time.Time) Period { | ||
| return MonthOf(t.AddDate(0, -1, 0)) | ||
| } | ||
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| func (p Period) Within(o Period) bool { | ||
| return (p.Begin.Equal(o.Begin) || p.Begin.After(o.Begin)) && | ||
| (p.End.Equal(o.End) || p.End.Before(o.End)) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| package datetime_test | ||
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| import ( | ||
| "testing" | ||
| "time" | ||
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| "github.com/blue-health/blue-go-toolbox/datetime" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
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| func TestPreviousMonthOf(t *testing.T) { | ||
| testCases := []struct { | ||
| in time.Time | ||
| out datetime.Period | ||
| }{ | ||
| {in: time.Date(2022, time.July, 1, 0, 0, 0, 0, time.UTC), out: datetime.Period{ | ||
| Begin: time.Date(2022, time.June, 1, 0, 0, 0, 0, time.UTC), | ||
| End: time.Date(2022, time.June, 30, 23, 59, 59, 999999999, time.UTC), | ||
| }}, | ||
| {in: time.Date(2022, time.August, 1, 0, 0, 0, 0, time.UTC), out: datetime.Period{ | ||
| Begin: time.Date(2022, time.July, 1, 0, 0, 0, 0, time.UTC), | ||
| End: time.Date(2022, time.July, 31, 23, 59, 59, 999999999, time.UTC), | ||
| }}, | ||
| {in: time.Date(2022, time.September, 3, 0, 0, 0, 0, time.UTC), out: datetime.Period{ | ||
| Begin: time.Date(2022, time.August, 1, 0, 0, 0, 0, time.UTC), | ||
| End: time.Date(2022, time.August, 31, 23, 59, 59, 999999999, time.UTC), | ||
| }}, | ||
| {in: time.Date(2022, time.September, 15, 0, 0, 0, 0, time.UTC), out: datetime.Period{ | ||
| Begin: time.Date(2022, time.August, 1, 0, 0, 0, 0, time.UTC), | ||
| End: time.Date(2022, time.August, 31, 23, 59, 59, 999999999, time.UTC), | ||
| }}, | ||
| {in: time.Date(2022, time.September, 30, 0, 0, 0, 0, time.UTC), out: datetime.Period{ | ||
| Begin: time.Date(2022, time.August, 1, 0, 0, 0, 0, time.UTC), | ||
| End: time.Date(2022, time.August, 31, 23, 59, 59, 999999999, time.UTC), | ||
| }}, | ||
| {in: time.Date(2023, time.January, 1, 0, 0, 0, 0, time.UTC), out: datetime.Period{ | ||
| Begin: time.Date(2022, time.December, 1, 0, 0, 0, 0, time.UTC), | ||
| End: time.Date(2022, time.December, 31, 23, 59, 59, 999999999, time.UTC), | ||
| }}, | ||
| } | ||
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| for _, c := range testCases { | ||
| t.Run(c.in.Format(time.RFC1123), func(t *testing.T) { | ||
| require.Equal(t, c.out, datetime.PreviousMonthOf(c.in)) | ||
| }) | ||
| } | ||
| } |
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