github.com/yinchengtsinghua/golang-Eos-dpos-Ethereum@v0.0.0-20190121132951-92cc4225ed8e/metrics/counter_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 BenchmarkCounter(b *testing.B) {
    14  	c := NewCounter()
    15  	b.ResetTimer()
    16  	for i := 0; i < b.N; i++ {
    17  		c.Inc(1)
    18  	}
    19  }
    20  
    21  func TestCounterClear(t *testing.T) {
    22  	c := NewCounter()
    23  	c.Inc(1)
    24  	c.Clear()
    25  	if count := c.Count(); 0 != count {
    26  		t.Errorf("c.Count(): 0 != %v\n", count)
    27  	}
    28  }
    29  
    30  func TestCounterDec1(t *testing.T) {
    31  	c := NewCounter()
    32  	c.Dec(1)
    33  	if count := c.Count(); -1 != count {
    34  		t.Errorf("c.Count(): -1 != %v\n", count)
    35  	}
    36  }
    37  
    38  func TestCounterDec2(t *testing.T) {
    39  	c := NewCounter()
    40  	c.Dec(2)
    41  	if count := c.Count(); -2 != count {
    42  		t.Errorf("c.Count(): -2 != %v\n", count)
    43  	}
    44  }
    45  
    46  func TestCounterInc1(t *testing.T) {
    47  	c := NewCounter()
    48  	c.Inc(1)
    49  	if count := c.Count(); 1 != count {
    50  		t.Errorf("c.Count(): 1 != %v\n", count)
    51  	}
    52  }
    53  
    54  func TestCounterInc2(t *testing.T) {
    55  	c := NewCounter()
    56  	c.Inc(2)
    57  	if count := c.Count(); 2 != count {
    58  		t.Errorf("c.Count(): 2 != %v\n", count)
    59  	}
    60  }
    61  
    62  func TestCounterSnapshot(t *testing.T) {
    63  	c := NewCounter()
    64  	c.Inc(1)
    65  	snapshot := c.Snapshot()
    66  	c.Inc(1)
    67  	if count := snapshot.Count(); 1 != count {
    68  		t.Errorf("c.Count(): 1 != %v\n", count)
    69  	}
    70  }
    71  
    72  func TestCounterZero(t *testing.T) {
    73  	c := NewCounter()
    74  	if count := c.Count(); 0 != count {
    75  		t.Errorf("c.Count(): 0 != %v\n", count)
    76  	}
    77  }
    78  
    79  func TestGetOrRegisterCounter(t *testing.T) {
    80  	r := NewRegistry()
    81  	NewRegisteredCounter("foo", r).Inc(47)
    82  	if c := GetOrRegisterCounter("foo", r); 47 != c.Count() {
    83  		t.Fatal(c)
    84  	}
    85  }