mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-26 06:04:05 -08:00
99 lines
2.3 KiB
Go
99 lines
2.3 KiB
Go
// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tsdb
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import (
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"math/rand"
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"testing"
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"github.com/pkg/errors"
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"github.com/prometheus/tsdb/chunks"
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"github.com/stretchr/testify/require"
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)
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type mockChunkReader map[uint64]chunks.Chunk
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func (cr mockChunkReader) Chunk(ref uint64) (chunks.Chunk, error) {
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chk, ok := cr[ref]
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if ok {
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return chk, nil
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}
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return nil, errors.New("Chunk with ref not found")
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}
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func (cr mockChunkReader) Close() error {
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return nil
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}
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func TestDeletedIterator(t *testing.T) {
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chk := chunks.NewXORChunk()
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app, err := chk.Appender()
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require.NoError(t, err)
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// Insert random stuff from (0, 1000).
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act := make([]sample, 1000)
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for i := 0; i < 1000; i++ {
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act[i].t = int64(i)
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act[i].v = rand.Float64()
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app.Append(act[i].t, act[i].v)
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}
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cases := []struct {
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r []trange
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}{
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{r: []trange{{1, 20}}},
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{r: []trange{{1, 10}, {12, 20}, {21, 23}, {25, 30}}},
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{r: []trange{{1, 10}, {12, 20}, {20, 30}}},
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{r: []trange{{1, 10}, {12, 23}, {25, 30}}},
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{r: []trange{{1, 23}, {12, 20}, {25, 30}}},
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{r: []trange{{1, 23}, {12, 20}, {25, 3000}}},
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{r: []trange{{0, 2000}}},
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{r: []trange{{500, 2000}}},
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{r: []trange{{0, 200}}},
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{r: []trange{{1000, 20000}}},
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}
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for _, c := range cases {
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i := int64(-1)
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it := &deletedIterator{it: chk.Iterator(), dranges: c.r[:]}
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ranges := c.r[:]
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for it.Next() {
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i++
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for _, tr := range ranges {
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if tr.inBounds(i) {
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i = tr.maxt + 1
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ranges = ranges[1:]
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}
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}
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require.True(t, i < 1000)
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ts, v := it.At()
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require.Equal(t, act[i].t, ts)
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require.Equal(t, act[i].v, v)
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}
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// There has been an extra call to Next().
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i++
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for _, tr := range ranges {
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if tr.inBounds(i) {
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i = tr.maxt + 1
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ranges = ranges[1:]
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}
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}
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require.False(t, i < 1000)
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require.NoError(t, it.Err())
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}
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}
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