github.com/neatio-net/neatio@v1.7.3-0.20231114194659-f4d7a2226baa/utilities/metrics/ewma_test.go (about)

     1  package metrics
     2  
     3  import "testing"
     4  
     5  func BenchmarkEWMA(b *testing.B) {
     6  	a := NewEWMA1()
     7  	b.ResetTimer()
     8  	for i := 0; i < b.N; i++ {
     9  		a.Update(1)
    10  		a.Tick()
    11  	}
    12  }
    13  
    14  func TestEWMA1(t *testing.T) {
    15  	a := NewEWMA1()
    16  	a.Update(3)
    17  	a.Tick()
    18  	if rate := a.Rate(); 0.6 != rate {
    19  		t.Errorf("initial a.Rate(): 0.6 != %v\n", rate)
    20  	}
    21  	elapseMinute(a)
    22  	if rate := a.Rate(); 0.22072766470286553 != rate {
    23  		t.Errorf("1 minute a.Rate(): 0.22072766470286553 != %v\n", rate)
    24  	}
    25  	elapseMinute(a)
    26  	if rate := a.Rate(); 0.08120116994196772 != rate {
    27  		t.Errorf("2 minute a.Rate(): 0.08120116994196772 != %v\n", rate)
    28  	}
    29  	elapseMinute(a)
    30  	if rate := a.Rate(); 0.029872241020718428 != rate {
    31  		t.Errorf("3 minute a.Rate(): 0.029872241020718428 != %v\n", rate)
    32  	}
    33  	elapseMinute(a)
    34  	if rate := a.Rate(); 0.01098938333324054 != rate {
    35  		t.Errorf("4 minute a.Rate(): 0.01098938333324054 != %v\n", rate)
    36  	}
    37  	elapseMinute(a)
    38  	if rate := a.Rate(); 0.004042768199451294 != rate {
    39  		t.Errorf("5 minute a.Rate(): 0.004042768199451294 != %v\n", rate)
    40  	}
    41  	elapseMinute(a)
    42  	if rate := a.Rate(); 0.0014872513059998212 != rate {
    43  		t.Errorf("6 minute a.Rate(): 0.0014872513059998212 != %v\n", rate)
    44  	}
    45  	elapseMinute(a)
    46  	if rate := a.Rate(); 0.0005471291793327122 != rate {
    47  		t.Errorf("7 minute a.Rate(): 0.0005471291793327122 != %v\n", rate)
    48  	}
    49  	elapseMinute(a)
    50  	if rate := a.Rate(); 0.00020127757674150815 != rate {
    51  		t.Errorf("8 minute a.Rate(): 0.00020127757674150815 != %v\n", rate)
    52  	}
    53  	elapseMinute(a)
    54  	if rate := a.Rate(); 7.404588245200814e-05 != rate {
    55  		t.Errorf("9 minute a.Rate(): 7.404588245200814e-05 != %v\n", rate)
    56  	}
    57  	elapseMinute(a)
    58  	if rate := a.Rate(); 2.7239957857491083e-05 != rate {
    59  		t.Errorf("10 minute a.Rate(): 2.7239957857491083e-05 != %v\n", rate)
    60  	}
    61  	elapseMinute(a)
    62  	if rate := a.Rate(); 1.0021020474147462e-05 != rate {
    63  		t.Errorf("11 minute a.Rate(): 1.0021020474147462e-05 != %v\n", rate)
    64  	}
    65  	elapseMinute(a)
    66  	if rate := a.Rate(); 3.6865274119969525e-06 != rate {
    67  		t.Errorf("12 minute a.Rate(): 3.6865274119969525e-06 != %v\n", rate)
    68  	}
    69  	elapseMinute(a)
    70  	if rate := a.Rate(); 1.3561976441886433e-06 != rate {
    71  		t.Errorf("13 minute a.Rate(): 1.3561976441886433e-06 != %v\n", rate)
    72  	}
    73  	elapseMinute(a)
    74  	if rate := a.Rate(); 4.989172314621449e-07 != rate {
    75  		t.Errorf("14 minute a.Rate(): 4.989172314621449e-07 != %v\n", rate)
    76  	}
    77  	elapseMinute(a)
    78  	if rate := a.Rate(); 1.8354139230109722e-07 != rate {
    79  		t.Errorf("15 minute a.Rate(): 1.8354139230109722e-07 != %v\n", rate)
    80  	}
    81  }
    82  
    83  func TestEWMA5(t *testing.T) {
    84  	a := NewEWMA5()
    85  	a.Update(3)
    86  	a.Tick()
    87  	if rate := a.Rate(); 0.6 != rate {
    88  		t.Errorf("initial a.Rate(): 0.6 != %v\n", rate)
    89  	}
    90  	elapseMinute(a)
    91  	if rate := a.Rate(); 0.49123845184678905 != rate {
    92  		t.Errorf("1 minute a.Rate(): 0.49123845184678905 != %v\n", rate)
    93  	}
    94  	elapseMinute(a)
    95  	if rate := a.Rate(); 0.4021920276213837 != rate {
    96  		t.Errorf("2 minute a.Rate(): 0.4021920276213837 != %v\n", rate)
    97  	}
    98  	elapseMinute(a)
    99  	if rate := a.Rate(); 0.32928698165641596 != rate {
   100  		t.Errorf("3 minute a.Rate(): 0.32928698165641596 != %v\n", rate)
   101  	}
   102  	elapseMinute(a)
   103  	if rate := a.Rate(); 0.269597378470333 != rate {
   104  		t.Errorf("4 minute a.Rate(): 0.269597378470333 != %v\n", rate)
   105  	}
   106  	elapseMinute(a)
   107  	if rate := a.Rate(); 0.2207276647028654 != rate {
   108  		t.Errorf("5 minute a.Rate(): 0.2207276647028654 != %v\n", rate)
   109  	}
   110  	elapseMinute(a)
   111  	if rate := a.Rate(); 0.18071652714732128 != rate {
   112  		t.Errorf("6 minute a.Rate(): 0.18071652714732128 != %v\n", rate)
   113  	}
   114  	elapseMinute(a)
   115  	if rate := a.Rate(); 0.14795817836496392 != rate {
   116  		t.Errorf("7 minute a.Rate(): 0.14795817836496392 != %v\n", rate)
   117  	}
   118  	elapseMinute(a)
   119  	if rate := a.Rate(); 0.12113791079679326 != rate {
   120  		t.Errorf("8 minute a.Rate(): 0.12113791079679326 != %v\n", rate)
   121  	}
   122  	elapseMinute(a)
   123  	if rate := a.Rate(); 0.09917933293295193 != rate {
   124  		t.Errorf("9 minute a.Rate(): 0.09917933293295193 != %v\n", rate)
   125  	}
   126  	elapseMinute(a)
   127  	if rate := a.Rate(); 0.08120116994196763 != rate {
   128  		t.Errorf("10 minute a.Rate(): 0.08120116994196763 != %v\n", rate)
   129  	}
   130  	elapseMinute(a)
   131  	if rate := a.Rate(); 0.06648189501740036 != rate {
   132  		t.Errorf("11 minute a.Rate(): 0.06648189501740036 != %v\n", rate)
   133  	}
   134  	elapseMinute(a)
   135  	if rate := a.Rate(); 0.05443077197364752 != rate {
   136  		t.Errorf("12 minute a.Rate(): 0.05443077197364752 != %v\n", rate)
   137  	}
   138  	elapseMinute(a)
   139  	if rate := a.Rate(); 0.04456414692860035 != rate {
   140  		t.Errorf("13 minute a.Rate(): 0.04456414692860035 != %v\n", rate)
   141  	}
   142  	elapseMinute(a)
   143  	if rate := a.Rate(); 0.03648603757513079 != rate {
   144  		t.Errorf("14 minute a.Rate(): 0.03648603757513079 != %v\n", rate)
   145  	}
   146  	elapseMinute(a)
   147  	if rate := a.Rate(); 0.0298722410207183831020718428 != rate {
   148  		t.Errorf("15 minute a.Rate(): 0.0298722410207183831020718428 != %v\n", rate)
   149  	}
   150  }
   151  
   152  func TestEWMA15(t *testing.T) {
   153  	a := NewEWMA15()
   154  	a.Update(3)
   155  	a.Tick()
   156  	if rate := a.Rate(); 0.6 != rate {
   157  		t.Errorf("initial a.Rate(): 0.6 != %v\n", rate)
   158  	}
   159  	elapseMinute(a)
   160  	if rate := a.Rate(); 0.5613041910189706 != rate {
   161  		t.Errorf("1 minute a.Rate(): 0.5613041910189706 != %v\n", rate)
   162  	}
   163  	elapseMinute(a)
   164  	if rate := a.Rate(); 0.5251039914257684 != rate {
   165  		t.Errorf("2 minute a.Rate(): 0.5251039914257684 != %v\n", rate)
   166  	}
   167  	elapseMinute(a)
   168  	if rate := a.Rate(); 0.4912384518467888184678905 != rate {
   169  		t.Errorf("3 minute a.Rate(): 0.4912384518467888184678905 != %v\n", rate)
   170  	}
   171  	elapseMinute(a)
   172  	if rate := a.Rate(); 0.459557003018789 != rate {
   173  		t.Errorf("4 minute a.Rate(): 0.459557003018789 != %v\n", rate)
   174  	}
   175  	elapseMinute(a)
   176  	if rate := a.Rate(); 0.4299187863442732 != rate {
   177  		t.Errorf("5 minute a.Rate(): 0.4299187863442732 != %v\n", rate)
   178  	}
   179  	elapseMinute(a)
   180  	if rate := a.Rate(); 0.4021920276213831 != rate {
   181  		t.Errorf("6 minute a.Rate(): 0.4021920276213831 != %v\n", rate)
   182  	}
   183  	elapseMinute(a)
   184  	if rate := a.Rate(); 0.37625345116383313 != rate {
   185  		t.Errorf("7 minute a.Rate(): 0.37625345116383313 != %v\n", rate)
   186  	}
   187  	elapseMinute(a)
   188  	if rate := a.Rate(); 0.3519877317060185 != rate {
   189  		t.Errorf("8 minute a.Rate(): 0.3519877317060185 != %v\n", rate)
   190  	}
   191  	elapseMinute(a)
   192  	if rate := a.Rate(); 0.3292869816564153165641596 != rate {
   193  		t.Errorf("9 minute a.Rate(): 0.3292869816564153165641596 != %v\n", rate)
   194  	}
   195  	elapseMinute(a)
   196  	if rate := a.Rate(); 0.3080502714195546 != rate {
   197  		t.Errorf("10 minute a.Rate(): 0.3080502714195546 != %v\n", rate)
   198  	}
   199  	elapseMinute(a)
   200  	if rate := a.Rate(); 0.2881831806538789 != rate {
   201  		t.Errorf("11 minute a.Rate(): 0.2881831806538789 != %v\n", rate)
   202  	}
   203  	elapseMinute(a)
   204  	if rate := a.Rate(); 0.26959737847033216 != rate {
   205  		t.Errorf("12 minute a.Rate(): 0.26959737847033216 != %v\n", rate)
   206  	}
   207  	elapseMinute(a)
   208  	if rate := a.Rate(); 0.2522102307052083 != rate {
   209  		t.Errorf("13 minute a.Rate(): 0.2522102307052083 != %v\n", rate)
   210  	}
   211  	elapseMinute(a)
   212  	if rate := a.Rate(); 0.23594443252115815 != rate {
   213  		t.Errorf("14 minute a.Rate(): 0.23594443252115815 != %v\n", rate)
   214  	}
   215  	elapseMinute(a)
   216  	if rate := a.Rate(); 0.2207276647028646247028654470286553 != rate {
   217  		t.Errorf("15 minute a.Rate(): 0.2207276647028646247028654470286553 != %v\n", rate)
   218  	}
   219  }
   220  
   221  func elapseMinute(a EWMA) {
   222  	for i := 0; i < 12; i++ {
   223  		a.Tick()
   224  	}
   225  }