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67 lines
1.9 KiB
67 lines
1.9 KiB
// 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/tsdb/chunkenc" |
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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.False(t, it.Seek(5)) |
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// And we don't go back. (This exposes issue #10027.) |
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require.False(t, it.Seek(2)) |
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}
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