mirror of
https://github.com/prometheus/prometheus.git
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122 lines
3.3 KiB
Go
122 lines
3.3 KiB
Go
// Copyright 2021 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 storage
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import (
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/prometheus/model/labels"
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"github.com/prometheus/prometheus/tsdb/chunkenc"
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"github.com/prometheus/prometheus/tsdb/tsdbutil"
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)
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func TestListSeriesIterator(t *testing.T) {
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it := NewListSeriesIterator(samples{
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sample{0, 0, nil, nil},
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sample{1, 1, nil, nil},
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sample{1, 1.5, nil, nil},
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sample{2, 2, nil, nil},
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sample{3, 3, nil, nil},
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})
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// Seek to the first sample with ts=1.
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require.Equal(t, chunkenc.ValFloat, it.Seek(1))
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ts, v := it.At()
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require.Equal(t, int64(1), ts)
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require.Equal(t, 1., v)
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// Seek one further, next sample still has ts=1.
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require.Equal(t, chunkenc.ValFloat, it.Next())
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ts, v = it.At()
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require.Equal(t, int64(1), ts)
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require.Equal(t, 1.5, v)
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// Seek again to 1 and make sure we stay where we are.
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require.Equal(t, chunkenc.ValFloat, it.Seek(1))
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ts, v = it.At()
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require.Equal(t, int64(1), ts)
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require.Equal(t, 1.5, v)
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// Another seek.
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require.Equal(t, chunkenc.ValFloat, it.Seek(3))
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ts, v = it.At()
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require.Equal(t, int64(3), ts)
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require.Equal(t, 3., v)
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// And we don't go back.
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require.Equal(t, chunkenc.ValFloat, it.Seek(2))
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ts, v = it.At()
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require.Equal(t, int64(3), ts)
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require.Equal(t, 3., v)
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// Seek beyond the end.
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require.Equal(t, chunkenc.ValNone, it.Seek(5))
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// And we don't go back. (This exposes issue #10027.)
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require.Equal(t, chunkenc.ValNone, it.Seek(2))
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}
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// TestSeriesSetToChunkSet test the property of SeriesSet that says
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// returned series should be iterable even after Next is called.
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func TestChunkSeriesSetToSeriesSet(t *testing.T) {
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series := []struct {
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lbs labels.Labels
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samples []tsdbutil.Sample
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}{
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{
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lbs: labels.FromStrings("__name__", "up", "instance", "localhost:8080"),
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samples: []tsdbutil.Sample{
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sample{t: 1, v: 1},
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sample{t: 2, v: 2},
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sample{t: 3, v: 3},
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sample{t: 4, v: 4},
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},
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}, {
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lbs: labels.FromStrings("__name__", "up", "instance", "localhost:8081"),
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samples: []tsdbutil.Sample{
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sample{t: 1, v: 2},
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sample{t: 2, v: 3},
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sample{t: 3, v: 4},
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sample{t: 4, v: 5},
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sample{t: 5, v: 6},
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sample{t: 6, v: 7},
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},
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},
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}
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var chunkSeries []ChunkSeries
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for _, s := range series {
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chunkSeries = append(chunkSeries, NewListChunkSeriesFromSamples(s.lbs, s.samples))
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}
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css := NewMockChunkSeriesSet(chunkSeries...)
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ss := NewSeriesSetFromChunkSeriesSet(css)
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var ssSlice []Series
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for ss.Next() {
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ssSlice = append(ssSlice, ss.At())
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}
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require.Len(t, ssSlice, 2)
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var iter chunkenc.Iterator
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for i, s := range ssSlice {
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require.EqualValues(t, series[i].lbs, s.Labels())
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iter = s.Iterator(iter)
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j := 0
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for iter.Next() == chunkenc.ValFloat {
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ts, v := iter.At()
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require.EqualValues(t, series[i].samples[j], sample{t: ts, v: v})
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j++
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}
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}
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}
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