gitlab.com/aquachain/aquachain@v1.17.16-rc3.0.20221018032414-e3ddf1e1c055/common/metrics/counter_test.go (about)

     1  // Copyright 2018 The aquachain Authors
     2  // This file is part of the aquachain library.
     3  //
     4  // The aquachain library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The aquachain library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the aquachain library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package metrics
    18  
    19  import "testing"
    20  
    21  func BenchmarkCounter(b *testing.B) {
    22  	c := NewCounter()
    23  	b.ResetTimer()
    24  	for i := 0; i < b.N; i++ {
    25  		c.Inc(1)
    26  	}
    27  }
    28  
    29  func TestCounterClear(t *testing.T) {
    30  	c := NewCounter()
    31  	c.Inc(1)
    32  	c.Clear()
    33  	if count := c.Count(); 0 != count {
    34  		t.Errorf("c.Count(): 0 != %v\n", count)
    35  	}
    36  }
    37  
    38  func TestCounterDec1(t *testing.T) {
    39  	c := NewCounter()
    40  	c.Dec(1)
    41  	if count := c.Count(); -1 != count {
    42  		t.Errorf("c.Count(): -1 != %v\n", count)
    43  	}
    44  }
    45  
    46  func TestCounterDec2(t *testing.T) {
    47  	c := NewCounter()
    48  	c.Dec(2)
    49  	if count := c.Count(); -2 != count {
    50  		t.Errorf("c.Count(): -2 != %v\n", count)
    51  	}
    52  }
    53  
    54  func TestCounterInc1(t *testing.T) {
    55  	c := NewCounter()
    56  	c.Inc(1)
    57  	if count := c.Count(); 1 != count {
    58  		t.Errorf("c.Count(): 1 != %v\n", count)
    59  	}
    60  }
    61  
    62  func TestCounterInc2(t *testing.T) {
    63  	c := NewCounter()
    64  	c.Inc(2)
    65  	if count := c.Count(); 2 != count {
    66  		t.Errorf("c.Count(): 2 != %v\n", count)
    67  	}
    68  }
    69  
    70  func TestCounterSnapshot(t *testing.T) {
    71  	c := NewCounter()
    72  	c.Inc(1)
    73  	snapshot := c.Snapshot()
    74  	c.Inc(1)
    75  	if count := snapshot.Count(); 1 != count {
    76  		t.Errorf("c.Count(): 1 != %v\n", count)
    77  	}
    78  }
    79  
    80  func TestCounterZero(t *testing.T) {
    81  	c := NewCounter()
    82  	if count := c.Count(); 0 != count {
    83  		t.Errorf("c.Count(): 0 != %v\n", count)
    84  	}
    85  }
    86  
    87  func TestGetOrRegisterCounter(t *testing.T) {
    88  	r := NewRegistry()
    89  	NewRegisteredCounter("foo", r).Inc(47)
    90  	if c := GetOrRegisterCounter("foo", r); 47 != c.Count() {
    91  		t.Fatal(c)
    92  	}
    93  }