github.com/aswedchain/aswed@v1.0.1/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); tm.Count() != 1 {
    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(); stdDev != 4.611686018427388e+18 {
    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 l+1 != len(arbiter.meters) {
    39  		t.Errorf("arbiter.meters: %d != %d\n", l+1, len(arbiter.meters))
    40  	}
    41  	tm.Stop()
    42  	if l != len(arbiter.meters) {
    43  		t.Errorf("arbiter.meters: %d != %d\n", l, len(arbiter.meters))
    44  	}
    45  }
    46  
    47  func TestTimerFunc(t *testing.T) {
    48  	var (
    49  		tm         = NewTimer()
    50  		testStart  = time.Now()
    51  		actualTime time.Duration
    52  	)
    53  	tm.Time(func() {
    54  		time.Sleep(50 * time.Millisecond)
    55  		actualTime = time.Since(testStart)
    56  	})
    57  	var (
    58  		drift    = time.Millisecond * 2
    59  		measured = time.Duration(tm.Max())
    60  		ceil     = actualTime + drift
    61  		floor    = actualTime - drift
    62  	)
    63  	if measured > ceil || measured < floor {
    64  		t.Errorf("tm.Max(): %v > %v || %v > %v\n", measured, ceil, measured, floor)
    65  	}
    66  }
    67  
    68  func TestTimerZero(t *testing.T) {
    69  	tm := NewTimer()
    70  	if count := tm.Count(); count != 0 {
    71  		t.Errorf("tm.Count(): 0 != %v\n", count)
    72  	}
    73  	if min := tm.Min(); min != 0 {
    74  		t.Errorf("tm.Min(): 0 != %v\n", min)
    75  	}
    76  	if max := tm.Max(); max != 0 {
    77  		t.Errorf("tm.Max(): 0 != %v\n", max)
    78  	}
    79  	if mean := tm.Mean(); mean != 0.0 {
    80  		t.Errorf("tm.Mean(): 0.0 != %v\n", mean)
    81  	}
    82  	if stdDev := tm.StdDev(); stdDev != 0.0 {
    83  		t.Errorf("tm.StdDev(): 0.0 != %v\n", stdDev)
    84  	}
    85  	ps := tm.Percentiles([]float64{0.5, 0.75, 0.99})
    86  	if ps[0] != 0.0 {
    87  		t.Errorf("median: 0.0 != %v\n", ps[0])
    88  	}
    89  	if ps[1] != 0.0 {
    90  		t.Errorf("75th percentile: 0.0 != %v\n", ps[1])
    91  	}
    92  	if ps[2] != 0.0 {
    93  		t.Errorf("99th percentile: 0.0 != %v\n", ps[2])
    94  	}
    95  	if rate1 := tm.Rate1(); rate1 != 0.0 {
    96  		t.Errorf("tm.Rate1(): 0.0 != %v\n", rate1)
    97  	}
    98  	if rate5 := tm.Rate5(); rate5 != 0.0 {
    99  		t.Errorf("tm.Rate5(): 0.0 != %v\n", rate5)
   100  	}
   101  	if rate15 := tm.Rate15(); rate15 != 0.0 {
   102  		t.Errorf("tm.Rate15(): 0.0 != %v\n", rate15)
   103  	}
   104  	if rateMean := tm.RateMean(); rateMean != 0.0 {
   105  		t.Errorf("tm.RateMean(): 0.0 != %v\n", rateMean)
   106  	}
   107  }
   108  
   109  func ExampleGetOrRegisterTimer() {
   110  	m := "account.create.latency"
   111  	t := GetOrRegisterTimer(m, nil)
   112  	t.Update(47)
   113  	fmt.Println(t.Max()) // Output: 47
   114  }