1 package metrics
2
3 import (
4 "fmt"
5 "math"
6 "testing"
7 "time"
8 )
9
10 func BenchmarkTimer(b *testing.B) {
11 tm := NewTimer()
12 b.ResetTimer()
13 for i := 0; i < b.N; i++ {
14 tm.Update(1)
15 }
16 }
17
18 func TestGetOrRegisterTimer(t *testing.T) {
19 r := NewRegistry()
20 NewRegisteredTimer("foo", r).Update(47)
21 if tm := GetOrRegisterTimer("foo", r); 1 != tm.Count() {
22 t.Fatal(tm)
23 }
24 }
25
26 func TestTimerExtremes(t *testing.T) {
27 tm := NewTimer()
28 tm.Update(math.MaxInt64)
29 tm.Update(0)
30 if stdDev := tm.StdDev(); 4.611686018427388e+18 != stdDev {
31 t.Errorf("tm.StdDev(): 4.611686018427388e+18 != %v\n", stdDev)
32 }
33 }
34
35 func TestTimerStop(t *testing.T) {
36 l := len(arbiter.meters)
37 tm := NewTimer()
38 if len(arbiter.meters) != l+1 {
39 t.Errorf("arbiter.meters: %d != %d\n", l+1, len(arbiter.meters))
40 }
41 tm.Stop()
42 if len(arbiter.meters) != l {
43 t.Errorf("arbiter.meters: %d != %d\n", l, len(arbiter.meters))
44 }
45 }
46
47 func TestTimerFunc(t *testing.T) {
48 tm := NewTimer()
49 tm.Time(func() { time.Sleep(50e6) })
50 if max := tm.Max(); 45e6 > max || max > 55e6 {
51 t.Errorf("tm.Max(): 45e6 > %v || %v > 55e6\n", max, max)
52 }
53 }
54
55 func TestTimerZero(t *testing.T) {
56 tm := NewTimer()
57 if count := tm.Count(); 0 != count {
58 t.Errorf("tm.Count(): 0 != %v\n", count)
59 }
60 if min := tm.Min(); 0 != min {
61 t.Errorf("tm.Min(): 0 != %v\n", min)
62 }
63 if max := tm.Max(); 0 != max {
64 t.Errorf("tm.Max(): 0 != %v\n", max)
65 }
66 if mean := tm.Mean(); 0.0 != mean {
67 t.Errorf("tm.Mean(): 0.0 != %v\n", mean)
68 }
69 if stdDev := tm.StdDev(); 0.0 != stdDev {
70 t.Errorf("tm.StdDev(): 0.0 != %v\n", stdDev)
71 }
72 ps := tm.Percentiles([]float64{0.5, 0.75, 0.99})
73 if 0.0 != ps[0] {
74 t.Errorf("median: 0.0 != %v\n", ps[0])
75 }
76 if 0.0 != ps[1] {
77 t.Errorf("75th percentile: 0.0 != %v\n", ps[1])
78 }
79 if 0.0 != ps[2] {
80 t.Errorf("99th percentile: 0.0 != %v\n", ps[2])
81 }
82 if rate1 := tm.Rate1(); 0.0 != rate1 {
83 t.Errorf("tm.Rate1(): 0.0 != %v\n", rate1)
84 }
85 if rate5 := tm.Rate5(); 0.0 != rate5 {
86 t.Errorf("tm.Rate5(): 0.0 != %v\n", rate5)
87 }
88 if rate15 := tm.Rate15(); 0.0 != rate15 {
89 t.Errorf("tm.Rate15(): 0.0 != %v\n", rate15)
90 }
91 if rateMean := tm.RateMean(); 0.0 != rateMean {
92 t.Errorf("tm.RateMean(): 0.0 != %v\n", rateMean)
93 }
94 }
95
96 func ExampleGetOrRegisterTimer() {
97 m := "account.create.latency"
98 t := GetOrRegisterTimer(m, nil)
99 t.Update(47)
100 fmt.Println(t.Max())
101 }
102
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