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|
package clocks
import (
"math"
"testing"
"time"
qt "github.com/frankban/quicktest"
"github.com/google/go-cmp/cmp"
)
const timeLayout = "2006-01-02-15:04:05"
var durationEq = qt.CmpEquals(
cmp.Comparer(func(x, y time.Duration) bool {
xs := math.RoundToEven(float64(x) / float64(time.Second))
ys := math.RoundToEven(float64(y) / float64(time.Second))
return xs == ys
}),
)
func TestClock(t *testing.T) {
c := qt.New(t)
c.Run("Past", func(c *qt.C) {
c.Parallel()
start, _ := time.Parse(timeLayout, "2019-10-11-02:50:01")
clock := Start(start)
c.Assert(toString(clock.Now()), qt.Equals, "2019-10-11-02:50:01")
time.Sleep(1 * time.Second)
c.Assert(toString(clock.Now()), qt.Equals, "2019-10-11-02:50:02")
})
c.Run("Future", func(c *qt.C) {
c.Parallel()
start, _ := time.Parse(timeLayout, "2053-10-11-02:50:01")
clock := Start(start)
c.Assert(toString(clock.Now()), qt.Equals, "2053-10-11-02:50:01")
time.Sleep(1 * time.Second)
c.Assert(toString(clock.Now()), qt.Equals, "2053-10-11-02:50:02")
})
c.Run("Offset", func(c *qt.C) {
c.Parallel()
clock := Start(time.Now().Add(5010 * time.Millisecond))
c.Assert(clock.Offset(), durationEq, time.Duration(5*time.Second))
})
c.Run("Since", func(c *qt.C) {
c.Parallel()
start, _ := time.Parse(timeLayout, "2019-10-11-02:50:01")
clock := Start(start)
time.Sleep(1 * time.Second)
c.Assert(clock.Since(start), durationEq, time.Duration(1*time.Second))
})
c.Run("Until", func(c *qt.C) {
c.Parallel()
start, _ := time.Parse(timeLayout, "2019-10-11-02:50:01")
clock := Start(start)
then := clock.Now().Add(3010 * time.Millisecond)
c.Assert(clock.Until(then), durationEq, time.Duration(3*time.Second))
})
}
func TestSystemClock(t *testing.T) {
t.Parallel()
c := qt.New(t)
c.Assert(toString(System().Now()), qt.Equals, toString(time.Now()))
c.Assert(System().Since(time.Now().Add(-10*time.Hour)), durationEq, time.Since(time.Now().Add(-10*time.Hour)))
c.Assert(System().Until(time.Now().Add(10*time.Hour)), durationEq, time.Until(time.Now().Add(10*time.Hour)))
c.Assert(System().Offset(), qt.Equals, time.Duration(0))
}
func TestFixedClock(t *testing.T) {
t.Parallel()
c := qt.New(t)
fixed := Fixed(TimeCupFinalNorway1976)
fiveSecondsLater := Fixed(TimeCupFinalNorway1976.Add(5 * time.Second))
fiveSecondsBefore := Fixed(TimeCupFinalNorway1976.Add(-5 * time.Second))
c.Assert(toString(fixed.Now()), qt.Equals, toString(TimeCupFinalNorway1976))
c.Assert(fixed.Offset() > 0, qt.IsTrue)
c.Assert(fixed.Since(fiveSecondsBefore.Now()), durationEq, time.Duration(5*time.Second))
c.Assert(fixed.Until(fiveSecondsLater.Now()), durationEq, time.Duration(5*time.Second))
}
func toString(t time.Time) string {
return t.UTC().Format(timeLayout)
}
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