86 lines
2.2 KiB
Go
86 lines
2.2 KiB
Go
// Copyright 2021 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 storage
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestMemoizedSeriesIterator(t *testing.T) {
|
|
var it *MemoizedSeriesIterator
|
|
|
|
sampleEq := func(ets int64, ev float64) {
|
|
ts, v := it.Values()
|
|
require.Equal(t, ets, ts, "timestamp mismatch")
|
|
require.Equal(t, ev, v, "value mismatch")
|
|
}
|
|
prevSampleEq := func(ets int64, ev float64, eok bool) {
|
|
ts, v, ok := it.PeekPrev()
|
|
require.Equal(t, eok, ok, "exist mismatch")
|
|
require.Equal(t, ets, ts, "timestamp mismatch")
|
|
require.Equal(t, ev, v, "value mismatch")
|
|
}
|
|
|
|
it = NewMemoizedIterator(NewListSeriesIterator(samples{
|
|
sample{t: 1, v: 2},
|
|
sample{t: 2, v: 3},
|
|
sample{t: 3, v: 4},
|
|
sample{t: 4, v: 5},
|
|
sample{t: 5, v: 6},
|
|
sample{t: 99, v: 8},
|
|
sample{t: 100, v: 9},
|
|
sample{t: 101, v: 10},
|
|
}), 2)
|
|
|
|
require.True(t, it.Seek(-123), "seek failed")
|
|
sampleEq(1, 2)
|
|
prevSampleEq(0, 0, false)
|
|
|
|
require.True(t, it.Next(), "next failed")
|
|
sampleEq(2, 3)
|
|
prevSampleEq(1, 2, true)
|
|
|
|
require.True(t, it.Next(), "next failed")
|
|
require.True(t, it.Next(), "next failed")
|
|
require.True(t, it.Next(), "next failed")
|
|
sampleEq(5, 6)
|
|
prevSampleEq(4, 5, true)
|
|
|
|
require.True(t, it.Seek(5), "seek failed")
|
|
sampleEq(5, 6)
|
|
prevSampleEq(4, 5, true)
|
|
|
|
require.True(t, it.Seek(101), "seek failed")
|
|
sampleEq(101, 10)
|
|
prevSampleEq(100, 9, true)
|
|
|
|
require.False(t, it.Next(), "next succeeded unexpectedly")
|
|
}
|
|
|
|
func BenchmarkMemoizedSeriesIterator(b *testing.B) {
|
|
// Simulate a 5 minute rate.
|
|
it := NewMemoizedIterator(newFakeSeriesIterator(int64(b.N), 30), 5*60)
|
|
|
|
b.SetBytes(int64(b.N * 16))
|
|
b.ReportAllocs()
|
|
b.ResetTimer()
|
|
|
|
for it.Next() {
|
|
// scan everything
|
|
}
|
|
require.NoError(b, it.Err())
|
|
}
|