github.com/insionng/yougam@v0.0.0-20170714101924-2bc18d833463/libraries/rcrowley/go-metrics/timer_test.go (about)

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