commit
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@ -1,5 +1,11 @@
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# Changelog
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## Develop-Branch changes (unreleased)
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FEATURES:
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- [common] Date range parsing from string (ex. "2015-12-31:2017-12-31")
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## 0.2.2 (June 16, 2017)
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FEATURES:
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@ -16,7 +22,6 @@ BUG FIXES:
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- [flowrate] Fix non-deterministic test failures
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## 0.2.1 (June 2, 2017)
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FEATURES:
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package common
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import (
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"strings"
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"time"
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"github.com/pkg/errors"
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)
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// TimeLayout helps to parse a date string of the format YYYY-MM-DD
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// Intended to be used with the following function:
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// time.Parse(TimeLayout, date)
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var TimeLayout = "2006-01-02" //this represents YYYY-MM-DD
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// ParseDateRange parses a date range string of the format start:end
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// where the start and end date are of the format YYYY-MM-DD.
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// The parsed dates are time.Time and will return the zero time for
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// unbounded dates, ex:
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// unbounded start: :2000-12-31
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// unbounded end: 2000-12-31:
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func ParseDateRange(dateRange string) (startDate, endDate time.Time, err error) {
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dates := strings.Split(dateRange, ":")
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if len(dates) != 2 {
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err = errors.New("bad date range, must be in format date:date")
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return
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}
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parseDate := func(date string) (out time.Time, err error) {
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if len(date) == 0 {
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return
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}
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out, err = time.Parse(TimeLayout, date)
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return
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}
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startDate, err = parseDate(dates[0])
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if err != nil {
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return
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}
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endDate, err = parseDate(dates[1])
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if err != nil {
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return
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}
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return
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}
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@ -0,0 +1,46 @@
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package common
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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var (
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date = time.Date(2015, time.Month(12), 31, 0, 0, 0, 0, time.UTC)
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date2 = time.Date(2016, time.Month(12), 31, 0, 0, 0, 0, time.UTC)
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zero time.Time
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)
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func TestParseDateRange(t *testing.T) {
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assert := assert.New(t)
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var testDates = []struct {
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dateStr string
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start time.Time
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end time.Time
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errNil bool
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}{
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{"2015-12-31:2016-12-31", date, date2, true},
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{"2015-12-31:", date, zero, true},
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{":2016-12-31", zero, date2, true},
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{"2016-12-31", zero, zero, false},
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{"2016-31-12:", zero, zero, false},
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{":2016-31-12", zero, zero, false},
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}
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for _, test := range testDates {
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start, end, err := ParseDateRange(test.dateStr)
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if test.errNil {
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assert.Nil(err)
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testPtr := func(want, have time.Time) {
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assert.True(have.Equal(want))
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}
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testPtr(test.start, start)
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testPtr(test.end, end)
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} else {
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assert.NotNil(err)
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}
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}
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}
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