Official Go implementation of the Ethereum protocol
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go-ethereum/metrics/gauge_float64_test.go

51 lines
1014 B

package metrics
import (
"sync"
"testing"
)
func BenchmarkGaugeFloat64(b *testing.B) {
g := NewGaugeFloat64()
b.ResetTimer()
for i := 0; i < b.N; i++ {
g.Update(float64(i))
}
}
func BenchmarkGaugeFloat64Parallel(b *testing.B) {
c := NewGaugeFloat64()
var wg sync.WaitGroup
for i := 0; i < 10; i++ {
wg.Add(1)
go func() {
for i := 0; i < b.N; i++ {
c.Update(float64(i))
}
wg.Done()
}()
}
wg.Wait()
if have, want := c.Snapshot().Value(), float64(b.N-1); have != want {
b.Fatalf("have %f want %f", have, want)
}
}
func TestGaugeFloat64Snapshot(t *testing.T) {
g := NewGaugeFloat64()
g.Update(47.0)
snapshot := g.Snapshot()
g.Update(float64(0))
if v := snapshot.Value(); 47.0 != v {
t.Errorf("g.Value(): 47.0 != %v\n", v)
}
}
func TestGetOrRegisterGaugeFloat64(t *testing.T) {
r := NewRegistry()
NewRegisteredGaugeFloat64("foo", r).Update(47.0)
t.Logf("registry: %v", r)
if g := GetOrRegisterGaugeFloat64("foo", r).Snapshot(); 47.0 != g.Value() {
t.Fatal(g)
}
}