github.1485827954.workers.dev/ethereum/go-ethereum@v1.14.3/metrics/gauge_float64_test.go (about)

     1  package metrics
     2  
     3  import (
     4  	"sync"
     5  	"testing"
     6  )
     7  
     8  func BenchmarkGaugeFloat64(b *testing.B) {
     9  	g := NewGaugeFloat64()
    10  	b.ResetTimer()
    11  	for i := 0; i < b.N; i++ {
    12  		g.Update(float64(i))
    13  	}
    14  }
    15  
    16  func BenchmarkGaugeFloat64Parallel(b *testing.B) {
    17  	c := NewGaugeFloat64()
    18  	var wg sync.WaitGroup
    19  	for i := 0; i < 10; i++ {
    20  		wg.Add(1)
    21  		go func() {
    22  			for i := 0; i < b.N; i++ {
    23  				c.Update(float64(i))
    24  			}
    25  			wg.Done()
    26  		}()
    27  	}
    28  	wg.Wait()
    29  	if have, want := c.Snapshot().Value(), float64(b.N-1); have != want {
    30  		b.Fatalf("have %f want %f", have, want)
    31  	}
    32  }
    33  
    34  func TestGaugeFloat64Snapshot(t *testing.T) {
    35  	g := NewGaugeFloat64()
    36  	g.Update(47.0)
    37  	snapshot := g.Snapshot()
    38  	g.Update(float64(0))
    39  	if v := snapshot.Value(); v != 47.0 {
    40  		t.Errorf("g.Value(): 47.0 != %v\n", v)
    41  	}
    42  }
    43  
    44  func TestGetOrRegisterGaugeFloat64(t *testing.T) {
    45  	r := NewRegistry()
    46  	NewRegisteredGaugeFloat64("foo", r).Update(47.0)
    47  	t.Logf("registry: %v", r)
    48  	if g := GetOrRegisterGaugeFloat64("foo", r).Snapshot(); g.Value() != 47.0 {
    49  		t.Fatal(g)
    50  	}
    51  }