github.com/c2s/go-ethereum@v1.9.7/metrics/timer_test.go (about) 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(); 35e6 > max || max > 145e6 { 51 t.Errorf("tm.Max(): 35e6 > %v || %v > 145e6\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()) // Output: 47 101 }