prometheus/tsdb/index/postingsstats_test.go

76 lines
1.8 KiB
Go
Raw Normal View History

// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package index
import (
"testing"
"github.com/prometheus/prometheus/util/testutil"
)
func TestPostingsStats(t *testing.T) {
stats := &maxHeap{}
max := 3000000
heapLength := 10
stats.init(heapLength)
for i := 0; i < max; i++ {
item := Stat{
Name: "Label-da",
Count: uint64(i),
}
stats.push(item)
}
stats.push(Stat{Name: "Stuff", Count: 3000000})
data := stats.get()
testutil.Equals(t, 10, len(data))
for i := 0; i < heapLength; i++ {
testutil.Equals(t, uint64(max-i), data[i].Count)
}
}
func TestPostingsStats2(t *testing.T) {
stats := &maxHeap{}
heapLength := 10
stats.init(heapLength)
stats.push(Stat{Name: "Stuff", Count: 10})
stats.push(Stat{Name: "Stuff", Count: 11})
stats.push(Stat{Name: "Stuff", Count: 1})
stats.push(Stat{Name: "Stuff", Count: 6})
data := stats.get()
testutil.Equals(t, 4, len(data))
testutil.Equals(t, uint64(11), data[0].Count)
}
func BenchmarkPostingStatsMaxHep(b *testing.B) {
stats := &maxHeap{}
max := 9000000
heapLength := 10
b.ResetTimer()
for n := 0; n < b.N; n++ {
stats.init(heapLength)
for i := 0; i < max; i++ {
item := Stat{
Name: "Label-da",
Count: uint64(i),
}
stats.push(item)
}
stats.get()
}
}