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package metrics
import (
"fmt"
"math"
"testing"
"time"
)
func BenchmarkTimer(b *testing.B) {
tm := NewTimer()
b.ResetTimer()
for i := 0; i < b.N; i++ {
tm.Update(1)
}
}
func TestGetOrRegisterTimer(t *testing.T) {
r := NewRegistry()
NewRegisteredTimer("foo", r).Update(47)
if tm := GetOrRegisterTimer("foo", r); 1 != tm.Count() {
t.Fatal(tm)
}
}
func TestTimerExtremes(t *testing.T) {
tm := NewTimer()
tm.Update(math.MaxInt64)
tm.Update(0)
if stdDev := tm.StdDev(); 4.611686018427388e+18 != stdDev {
t.Errorf("tm.StdDev(): 4.611686018427388e+18 != %v\n", stdDev)
}
}
func TestTimerStop(t *testing.T) {
l := len(arbiter.meters)
tm := NewTimer()
if len(arbiter.meters) != l+1 {
t.Errorf("arbiter.meters: %d != %d\n", l+1, len(arbiter.meters))
}
tm.Stop()
if len(arbiter.meters) != l {
t.Errorf("arbiter.meters: %d != %d\n", l, len(arbiter.meters))
}
}
func TestTimerFunc(t *testing.T) {
tm := NewTimer()
tm.Time(func() { time.Sleep(50e6) })
if max := tm.Max(); 45e6 > max || max > 55e6 {
t.Errorf("tm.Max(): 45e6 > %v || %v > 55e6\n", max, max)
}
}
func TestTimerZero(t *testing.T) {
tm := NewTimer()
if count := tm.Count(); 0 != count {
t.Errorf("tm.Count(): 0 != %v\n", count)
}
if min := tm.Min(); 0 != min {
t.Errorf("tm.Min(): 0 != %v\n", min)
}
if max := tm.Max(); 0 != max {
t.Errorf("tm.Max(): 0 != %v\n", max)
}
if mean := tm.Mean(); 0.0 != mean {
t.Errorf("tm.Mean(): 0.0 != %v\n", mean)
}
if stdDev := tm.StdDev(); 0.0 != stdDev {
t.Errorf("tm.StdDev(): 0.0 != %v\n", stdDev)
}
ps := tm.Percentiles([]float64{0.5, 0.75, 0.99})
if 0.0 != ps[0] {
t.Errorf("median: 0.0 != %v\n", ps[0])
}
if 0.0 != ps[1] {
t.Errorf("75th percentile: 0.0 != %v\n", ps[1])
}
if 0.0 != ps[2] {
t.Errorf("99th percentile: 0.0 != %v\n", ps[2])
}
if rate1 := tm.Rate1(); 0.0 != rate1 {
t.Errorf("tm.Rate1(): 0.0 != %v\n", rate1)
}
if rate5 := tm.Rate5(); 0.0 != rate5 {
t.Errorf("tm.Rate5(): 0.0 != %v\n", rate5)
}
if rate15 := tm.Rate15(); 0.0 != rate15 {
t.Errorf("tm.Rate15(): 0.0 != %v\n", rate15)
}
if rateMean := tm.RateMean(); 0.0 != rateMean {
t.Errorf("tm.RateMean(): 0.0 != %v\n", rateMean)
}
}
func ExampleGetOrRegisterTimer() {
m := "account.create.latency"
t := GetOrRegisterTimer(m, nil)
t.Update(47)
fmt.Println(t.Max()) // Output: 47
}
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