prometheus/tombstones_test.go

124 lines
2.9 KiB
Go

// Copyright 2017 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 tsdb
import (
"io/ioutil"
"math/rand"
"os"
"testing"
"time"
"github.com/stretchr/testify/require"
)
func TestWriteAndReadbackTombStones(t *testing.T) {
tmpdir, _ := ioutil.TempDir("", "test")
defer os.RemoveAll(tmpdir)
ref := uint32(0)
stones := make(map[uint32]intervals)
// Generate the tombstones.
for i := 0; i < 100; i++ {
ref += uint32(rand.Int31n(10)) + 1
numRanges := rand.Intn(5) + 1
dranges := make(intervals, 0, numRanges)
mint := rand.Int63n(time.Now().UnixNano())
for j := 0; j < numRanges; j++ {
dranges = dranges.add(interval{mint, mint + rand.Int63n(1000)})
mint += rand.Int63n(1000) + 1
}
stones[ref] = dranges
}
require.NoError(t, writeTombstoneFile(tmpdir, newTombstoneReader(stones)))
restr, err := readTombstones(tmpdir)
require.NoError(t, err)
exptr := newTombstoneReader(stones)
// Compare the two readers.
require.Equal(t, exptr, restr)
}
func TestAddingNewIntervals(t *testing.T) {
cases := []struct {
exist intervals
new interval
exp intervals
}{
{
new: interval{1, 2},
exp: intervals{{1, 2}},
},
{
exist: intervals{{1, 2}},
new: interval{1, 2},
exp: intervals{{1, 2}},
},
{
exist: intervals{{1, 4}, {6, 6}},
new: interval{5, 6},
exp: intervals{{1, 6}},
},
{
exist: intervals{{1, 10}, {12, 20}, {25, 30}},
new: interval{21, 23},
exp: intervals{{1, 10}, {12, 23}, {25, 30}},
},
{
exist: intervals{{1, 2}, {3, 5}, {7, 7}},
new: interval{6, 7},
exp: intervals{{1, 2}, {3, 7}},
},
{
exist: intervals{{1, 10}, {12, 20}, {25, 30}},
new: interval{21, 25},
exp: intervals{{1, 10}, {12, 30}},
},
{
exist: intervals{{1, 10}, {12, 20}, {25, 30}},
new: interval{18, 23},
exp: intervals{{1, 10}, {12, 23}, {25, 30}},
},
{
exist: intervals{{1, 10}, {12, 20}, {25, 30}},
new: interval{9, 23},
exp: intervals{{1, 23}, {25, 30}},
},
{
exist: intervals{{1, 10}, {12, 20}, {25, 30}},
new: interval{9, 230},
exp: intervals{{1, 230}},
},
{
exist: intervals{{5, 10}, {12, 20}, {25, 30}},
new: interval{1, 4},
exp: intervals{{1, 10}, {12, 20}, {25, 30}},
},
{
exist: intervals{{5, 10}, {12, 20}, {25, 30}},
new: interval{11, 14},
exp: intervals{{5, 20}, {25, 30}},
},
}
for _, c := range cases {
require.Equal(t, c.exp, c.exist.add(c.new))
}
return
}