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query_test.go
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query_test.go
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// Copyright (c) The Thanos Authors.
// Licensed under the Apache License 2.0.
package main
import (
"testing"
"time"
"github.com/prometheus/prometheus/promql"
"github.com/efficientgo/core/testutil"
)
func TestLookbackDeltaFactory(t *testing.T) {
type testCase struct {
stepMillis int64
expect time.Duration
}
var (
minute = time.Minute.Milliseconds()
hour = time.Hour.Milliseconds()
tData = []struct {
lookbackDelta time.Duration
dynamicLookbackDelta bool
tcs []testCase
}{
{
// Non-dynamic lookbackDelta should always return the same engine.
lookbackDelta: 0,
dynamicLookbackDelta: false,
tcs: []testCase{
{0, time.Duration(0)},
{5 * minute, time.Duration(0)},
{1 * hour, time.Duration(0)},
},
},
{
lookbackDelta: 3 * time.Minute,
dynamicLookbackDelta: true,
tcs: []testCase{
{2 * minute, time.Duration(3) * time.Minute},
{3 * minute, time.Duration(3) * time.Minute},
{4 * minute, time.Duration(5) * time.Minute},
{5 * minute, time.Duration(5) * time.Minute},
{6 * minute, time.Duration(1) * time.Hour},
{1 * hour, time.Duration(1) * time.Hour},
{2 * hour, time.Duration(1) * time.Hour},
},
},
{
lookbackDelta: 5 * time.Minute,
dynamicLookbackDelta: true,
tcs: []testCase{
{0, time.Duration(5) * time.Minute},
{5 * minute, time.Duration(5) * time.Minute},
{6 * minute, time.Duration(1) * time.Hour},
{59 * minute, time.Duration(1) * time.Hour},
{1 * hour, time.Duration(1) * time.Hour},
{2 * hour, time.Duration(1) * time.Hour},
},
},
{
lookbackDelta: 30 * time.Minute,
dynamicLookbackDelta: true,
tcs: []testCase{
{0, time.Duration(30) * time.Minute},
{5 * minute, time.Duration(30) * time.Minute},
{30 * minute, time.Duration(30) * time.Minute},
{31 * minute, time.Duration(1) * time.Hour},
{59 * minute, time.Duration(1) * time.Hour},
{1 * hour, time.Duration(1) * time.Hour},
{2 * hour, time.Duration(1) * time.Hour},
},
},
{
lookbackDelta: 1 * time.Hour,
dynamicLookbackDelta: true,
tcs: []testCase{
{0, time.Duration(1) * time.Hour},
{5 * minute, time.Duration(1) * time.Hour},
{1 * hour, time.Duration(1) * time.Hour},
{2 * hour, time.Duration(1) * time.Hour},
},
},
}
)
for _, td := range tData {
lookbackCreate := LookbackDeltaFactory(promql.EngineOpts{LookbackDelta: td.lookbackDelta}, td.dynamicLookbackDelta)
for _, tc := range td.tcs {
got := lookbackCreate(tc.stepMillis)
testutil.Equals(t, tc.expect, got)
}
}
}