github.com/mprishchepo/go-ethereum@v1.9.7-0.20191031044858-21506be82b68/metrics/meter_test.go (about)

     1  package metrics
     2  
     3  import (
     4  	"testing"
     5  	"time"
     6  )
     7  
     8  func BenchmarkMeter(b *testing.B) {
     9  	m := NewMeter()
    10  	b.ResetTimer()
    11  	for i := 0; i < b.N; i++ {
    12  		m.Mark(1)
    13  	}
    14  }
    15  
    16  func TestGetOrRegisterMeter(t *testing.T) {
    17  	r := NewRegistry()
    18  	NewRegisteredMeter("foo", r).Mark(47)
    19  	if m := GetOrRegisterMeter("foo", r); 47 != m.Count() {
    20  		t.Fatal(m)
    21  	}
    22  }
    23  
    24  func TestMeterDecay(t *testing.T) {
    25  	ma := meterArbiter{
    26  		ticker: time.NewTicker(time.Millisecond),
    27  		meters: make(map[*StandardMeter]struct{}),
    28  	}
    29  	m := newStandardMeter()
    30  	ma.meters[m] = struct{}{}
    31  	go ma.tick()
    32  	m.Mark(1)
    33  	rateMean := m.RateMean()
    34  	time.Sleep(100 * time.Millisecond)
    35  	if m.RateMean() >= rateMean {
    36  		t.Error("m.RateMean() didn't decrease")
    37  	}
    38  }
    39  
    40  func TestMeterNonzero(t *testing.T) {
    41  	m := NewMeter()
    42  	m.Mark(3)
    43  	if count := m.Count(); 3 != count {
    44  		t.Errorf("m.Count(): 3 != %v\n", count)
    45  	}
    46  }
    47  
    48  func TestMeterStop(t *testing.T) {
    49  	l := len(arbiter.meters)
    50  	m := NewMeter()
    51  	if len(arbiter.meters) != l+1 {
    52  		t.Errorf("arbiter.meters: %d != %d\n", l+1, len(arbiter.meters))
    53  	}
    54  	m.Stop()
    55  	if len(arbiter.meters) != l {
    56  		t.Errorf("arbiter.meters: %d != %d\n", l, len(arbiter.meters))
    57  	}
    58  }
    59  
    60  func TestMeterSnapshot(t *testing.T) {
    61  	m := NewMeter()
    62  	m.Mark(1)
    63  	if snapshot := m.Snapshot(); m.RateMean() != snapshot.RateMean() {
    64  		t.Fatal(snapshot)
    65  	}
    66  }
    67  
    68  func TestMeterZero(t *testing.T) {
    69  	m := NewMeter()
    70  	if count := m.Count(); 0 != count {
    71  		t.Errorf("m.Count(): 0 != %v\n", count)
    72  	}
    73  }