github.com/m3db/m3@v1.5.0/src/query/graphite/common/percentiles_test.go (about)

     1  // Copyright (c) 2019 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package common
    22  
    23  import (
    24  	"testing"
    25  
    26  	"github.com/stretchr/testify/assert"
    27  )
    28  
    29  type percentileTestParams struct {
    30  	interpolate bool
    31  	percentile  float64
    32  	input       []float64
    33  	expected    float64
    34  }
    35  
    36  func TestGetPercentile(t *testing.T) {
    37  	tests := []percentileTestParams{
    38  		{
    39  			false,
    40  			0,
    41  			[]float64{1, 2, 3, 4, 5},
    42  			1,
    43  		},
    44  		{
    45  			false,
    46  			10,
    47  			[]float64{1, 2, 3, 4, 5},
    48  			1,
    49  		},
    50  		{
    51  			false,
    52  			50,
    53  			[]float64{1, 2, 3, 4, 5},
    54  			3,
    55  		},
    56  		{
    57  			true,
    58  			50,
    59  			[]float64{1, 2, 3, 4, 5},
    60  			3,
    61  		},
    62  		{
    63  			false,
    64  			50,
    65  			[]float64{1, 2, 3, 4, 5, 6},
    66  			4,
    67  		},
    68  		{
    69  			true,
    70  			50,
    71  			[]float64{1, 2, 3, 4, 5, 6},
    72  			3.5,
    73  		},
    74  		{
    75  			false,
    76  			90,
    77  			[]float64{1, 2, 3, 4, 5},
    78  			5,
    79  		},
    80  		{
    81  			false,
    82  			50,
    83  			[]float64{1},
    84  			1,
    85  		},
    86  		{
    87  			false,
    88  			50,
    89  			[]float64{1, 2},
    90  			2,
    91  		},
    92  		{
    93  			true,
    94  			30,
    95  			[]float64{32, 34, 62, 73, 75},
    96  			33.6,
    97  		},
    98  		{
    99  			true,
   100  			33,
   101  			[]float64{32, 34, 73, 75},
   102  			33.3,
   103  		},
   104  	}
   105  
   106  	for _, test := range tests {
   107  		testGetPercentile(t, test)
   108  	}
   109  }
   110  
   111  func testGetPercentile(t *testing.T, test percentileTestParams) {
   112  	actual := GetPercentile(test.input, test.percentile, test.interpolate)
   113  	assert.Equal(t, test.expected, actual)
   114  }