151 lines
3.0 KiB
Go
151 lines
3.0 KiB
Go
package functions_test
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import (
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"math"
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"testing"
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"github.com/influxdata/platform/query/functions"
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"github.com/influxdata/platform/query"
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"github.com/influxdata/platform/query/execute"
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"github.com/influxdata/platform/query/execute/executetest"
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"github.com/influxdata/platform/query/querytest"
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)
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func TestPercentileOperation_Marshaling(t *testing.T) {
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data := []byte(`{"id":"percentile","kind":"percentile","spec":{"percentile":0.9}}`)
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op := &query.Operation{
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ID: "percentile",
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Spec: &functions.PercentileOpSpec{
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Percentile: 0.9,
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},
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}
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querytest.OperationMarshalingTestHelper(t, data, op)
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}
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func TestPercentile_Process(t *testing.T) {
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testCases := []struct {
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name string
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data []float64
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percentile float64
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exact bool
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want float64
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}{
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{
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name: "zero",
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data: []float64{0, 0, 0},
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percentile: 0.5,
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want: 0.0,
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},
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{
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name: "50th",
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data: []float64{1, 2, 3, 4, 5, 5, 4, 3, 2, 1},
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percentile: 0.5,
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want: 3,
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},
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{
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name: "75th",
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data: []float64{1, 2, 3, 4, 5, 5, 4, 3, 2, 1},
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percentile: 0.75,
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want: 4,
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},
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{
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name: "90th",
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data: []float64{1, 2, 3, 4, 5, 5, 4, 3, 2, 1},
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percentile: 0.9,
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want: 5,
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},
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{
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name: "99th",
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data: []float64{1, 2, 3, 4, 5, 5, 4, 3, 2, 1},
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percentile: 0.99,
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want: 5,
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},
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{
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name: "exact 50th",
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data: []float64{1, 2, 3, 4, 5},
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percentile: 0.5,
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exact: true,
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want: 3,
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},
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{
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name: "exact 75th",
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data: []float64{1, 2, 3, 4, 5},
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percentile: 0.75,
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exact: true,
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want: 4,
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},
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{
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name: "exact 90th",
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data: []float64{1, 2, 3, 4, 5},
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percentile: 0.9,
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exact: true,
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want: 4.6,
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},
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{
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name: "exact 99th",
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data: []float64{1, 2, 3, 4, 5},
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percentile: 0.99,
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exact: true,
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want: 4.96,
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},
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{
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name: "exact 100th",
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data: []float64{1, 2, 3, 4, 5},
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percentile: 1,
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exact: true,
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want: 5,
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},
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{
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name: "exact 50th normal",
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data: NormalData,
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percentile: 0.5,
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exact: true,
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want: 9.997645059676595,
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},
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{
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name: "normal",
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data: NormalData,
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percentile: 0.9,
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want: 13.843815760607427,
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},
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{
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name: "NaN",
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data: []float64{},
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want: math.NaN(),
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},
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}
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for _, tc := range testCases {
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tc := tc
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t.Run(tc.name, func(t *testing.T) {
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var agg execute.Aggregate
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if tc.exact {
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agg = &functions.ExactPercentileAgg{Quantile: tc.percentile}
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} else {
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agg = &functions.PercentileAgg{
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Quantile: tc.percentile,
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Compression: 1000,
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}
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}
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executetest.AggFuncTestHelper(
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t,
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agg,
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tc.data,
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tc.want,
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)
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})
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}
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}
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func BenchmarkPercentile(b *testing.B) {
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executetest.AggFuncBenchmarkHelper(
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b,
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&functions.PercentileAgg{
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Quantile: 0.9,
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Compression: 1000,
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},
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NormalData,
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13.843815760607427,
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)
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}
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