github.com/yinchengtsinghua/golang-Eos-dpos-Ethereum@v0.0.0-20190121132951-92cc4225ed8e/metrics/gauge_float64_test.go (about)

     1  
     2  //此源码被清华学神尹成大魔王专业翻译分析并修改
     3  //尹成QQ77025077
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     9  package metrics
    10  
    11  import "testing"
    12  
    13  func BenchmarkGuageFloat64(b *testing.B) {
    14  	g := NewGaugeFloat64()
    15  	b.ResetTimer()
    16  	for i := 0; i < b.N; i++ {
    17  		g.Update(float64(i))
    18  	}
    19  }
    20  
    21  func TestGaugeFloat64(t *testing.T) {
    22  	g := NewGaugeFloat64()
    23  	g.Update(float64(47.0))
    24  	if v := g.Value(); float64(47.0) != v {
    25  		t.Errorf("g.Value(): 47.0 != %v\n", v)
    26  	}
    27  }
    28  
    29  func TestGaugeFloat64Snapshot(t *testing.T) {
    30  	g := NewGaugeFloat64()
    31  	g.Update(float64(47.0))
    32  	snapshot := g.Snapshot()
    33  	g.Update(float64(0))
    34  	if v := snapshot.Value(); float64(47.0) != v {
    35  		t.Errorf("g.Value(): 47.0 != %v\n", v)
    36  	}
    37  }
    38  
    39  func TestGetOrRegisterGaugeFloat64(t *testing.T) {
    40  	r := NewRegistry()
    41  	NewRegisteredGaugeFloat64("foo", r).Update(float64(47.0))
    42  	t.Logf("registry: %v", r)
    43  	if g := GetOrRegisterGaugeFloat64("foo", r); float64(47.0) != g.Value() {
    44  		t.Fatal(g)
    45  	}
    46  }
    47  
    48  func TestFunctionalGaugeFloat64(t *testing.T) {
    49  	var counter float64
    50  	fg := NewFunctionalGaugeFloat64(func() float64 {
    51  		counter++
    52  		return counter
    53  	})
    54  	fg.Value()
    55  	fg.Value()
    56  	if counter != 2 {
    57  		t.Error("counter != 2")
    58  	}
    59  }
    60  
    61  func TestGetOrRegisterFunctionalGaugeFloat64(t *testing.T) {
    62  	r := NewRegistry()
    63  	NewRegisteredFunctionalGaugeFloat64("foo", r, func() float64 { return 47 })
    64  	if g := GetOrRegisterGaugeFloat64("foo", r); 47 != g.Value() {
    65  		t.Fatal(g)
    66  	}
    67  }