github.com/codingfuture/orig-energi3@v0.8.4/metrics/timer_test.go (about)

     1  // Copyright 2018 The Energi Core Authors
     2  // Copyright 2018 The go-ethereum Authors
     3  // This file is part of the Energi Core library.
     4  //
     5  // The Energi Core library is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU Lesser General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // The Energi Core library is distributed in the hope that it will be useful,
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  // GNU Lesser General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU Lesser General Public License
    16  // along with the Energi Core library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package metrics
    19  
    20  import (
    21  	"fmt"
    22  	"math"
    23  	"testing"
    24  	"time"
    25  )
    26  
    27  func BenchmarkTimer(b *testing.B) {
    28  	tm := NewTimer()
    29  	b.ResetTimer()
    30  	for i := 0; i < b.N; i++ {
    31  		tm.Update(1)
    32  	}
    33  }
    34  
    35  func TestGetOrRegisterTimer(t *testing.T) {
    36  	r := NewRegistry()
    37  	NewRegisteredTimer("foo", r).Update(47)
    38  	if tm := GetOrRegisterTimer("foo", r); 1 != tm.Count() {
    39  		t.Fatal(tm)
    40  	}
    41  }
    42  
    43  func TestTimerExtremes(t *testing.T) {
    44  	tm := NewTimer()
    45  	tm.Update(math.MaxInt64)
    46  	tm.Update(0)
    47  	if stdDev := tm.StdDev(); 4.611686018427388e+18 != stdDev {
    48  		t.Errorf("tm.StdDev(): 4.611686018427388e+18 != %v\n", stdDev)
    49  	}
    50  }
    51  
    52  func TestTimerStop(t *testing.T) {
    53  	l := len(arbiter.meters)
    54  	tm := NewTimer()
    55  	if len(arbiter.meters) != l+1 {
    56  		t.Errorf("arbiter.meters: %d != %d\n", l+1, len(arbiter.meters))
    57  	}
    58  	tm.Stop()
    59  	if len(arbiter.meters) != l {
    60  		t.Errorf("arbiter.meters: %d != %d\n", l, len(arbiter.meters))
    61  	}
    62  }
    63  
    64  func TestTimerFunc(t *testing.T) {
    65  	tm := NewTimer()
    66  	tm.Time(func() { time.Sleep(50e6) })
    67  	if max := tm.Max(); 35e6 > max || max > 145e6 {
    68  		t.Errorf("tm.Max(): 35e6 > %v || %v > 145e6\n", max, max)
    69  	}
    70  }
    71  
    72  func TestTimerZero(t *testing.T) {
    73  	tm := NewTimer()
    74  	if count := tm.Count(); 0 != count {
    75  		t.Errorf("tm.Count(): 0 != %v\n", count)
    76  	}
    77  	if min := tm.Min(); 0 != min {
    78  		t.Errorf("tm.Min(): 0 != %v\n", min)
    79  	}
    80  	if max := tm.Max(); 0 != max {
    81  		t.Errorf("tm.Max(): 0 != %v\n", max)
    82  	}
    83  	if mean := tm.Mean(); 0.0 != mean {
    84  		t.Errorf("tm.Mean(): 0.0 != %v\n", mean)
    85  	}
    86  	if stdDev := tm.StdDev(); 0.0 != stdDev {
    87  		t.Errorf("tm.StdDev(): 0.0 != %v\n", stdDev)
    88  	}
    89  	ps := tm.Percentiles([]float64{0.5, 0.75, 0.99})
    90  	if 0.0 != ps[0] {
    91  		t.Errorf("median: 0.0 != %v\n", ps[0])
    92  	}
    93  	if 0.0 != ps[1] {
    94  		t.Errorf("75th percentile: 0.0 != %v\n", ps[1])
    95  	}
    96  	if 0.0 != ps[2] {
    97  		t.Errorf("99th percentile: 0.0 != %v\n", ps[2])
    98  	}
    99  	if rate1 := tm.Rate1(); 0.0 != rate1 {
   100  		t.Errorf("tm.Rate1(): 0.0 != %v\n", rate1)
   101  	}
   102  	if rate5 := tm.Rate5(); 0.0 != rate5 {
   103  		t.Errorf("tm.Rate5(): 0.0 != %v\n", rate5)
   104  	}
   105  	if rate15 := tm.Rate15(); 0.0 != rate15 {
   106  		t.Errorf("tm.Rate15(): 0.0 != %v\n", rate15)
   107  	}
   108  	if rateMean := tm.RateMean(); 0.0 != rateMean {
   109  		t.Errorf("tm.RateMean(): 0.0 != %v\n", rateMean)
   110  	}
   111  }
   112  
   113  func ExampleGetOrRegisterTimer() {
   114  	m := "account.create.latency"
   115  	t := GetOrRegisterTimer(m, nil)
   116  	t.Update(47)
   117  	fmt.Println(t.Max()) // Output: 47
   118  }