path: root/metrics/gauge_float64_test.go

package metrics

import "testing"

func BenchmarkGuageFloat64(b *testing.B) {
    g := NewGaugeFloat64()
    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        g.Update(float64(i))
    }
}

func TestGaugeFloat64(t *testing.T) {
    g := NewGaugeFloat64()
    g.Update(float64(47.0))
    if v := g.Value(); float64(47.0) != v {
        t.Errorf("g.Value(): 47.0 != %v\n", v)
    }
}

func TestGaugeFloat64Snapshot(t *testing.T) {
    g := NewGaugeFloat64()
    g.Update(float64(47.0))
    snapshot := g.Snapshot()
    g.Update(float64(0))
    if v := snapshot.Value(); float64(47.0) != v {
        t.Errorf("g.Value(): 47.0 != %v\n", v)
    }
}

func TestGetOrRegisterGaugeFloat64(t *testing.T) {
    r := NewRegistry()
    NewRegisteredGaugeFloat64("foo", r).Update(float64(47.0))
    t.Logf("registry: %v", r)
    if g := GetOrRegisterGaugeFloat64("foo", r); float64(47.0) != g.Value() {
        t.Fatal(g)
    }
}

func TestFunctionalGaugeFloat64(t *testing.T) {
    var counter float64
    fg := NewFunctionalGaugeFloat64(func() float64 {
        counter++
        return counter
    })
    fg.Value()
    fg.Value()
    if counter != 2 {
        t.Error("counter != 2")
    }
}

func TestGetOrRegisterFunctionalGaugeFloat64(t *testing.T) {
    r := NewRegistry()
    NewRegisteredFunctionalGaugeFloat64("foo", r, func() float64 { return 47 })
    if g := GetOrRegisterGaugeFloat64("foo", r); 47 != g.Value() {
        t.Fatal(g)
    }
}