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60 lines
2.0 KiB
60 lines
2.0 KiB
// Copyright 2023 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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"testing" |
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"github.com/stretchr/testify/require" |
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) |
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func TestOOOIsolation(t *testing.T) { |
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i := newOOOIsolation() |
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// Empty state shouldn't have any open reads. |
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require.False(t, i.HasOpenReadsAtOrBefore(0)) |
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require.False(t, i.HasOpenReadsAtOrBefore(1)) |
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require.False(t, i.HasOpenReadsAtOrBefore(2)) |
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require.False(t, i.HasOpenReadsAtOrBefore(3)) |
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// Add a read. |
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read1 := i.TrackReadAfter(1) |
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require.False(t, i.HasOpenReadsAtOrBefore(0)) |
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require.False(t, i.HasOpenReadsAtOrBefore(1)) |
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require.True(t, i.HasOpenReadsAtOrBefore(2)) |
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// Add another overlapping read. |
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read2 := i.TrackReadAfter(0) |
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require.False(t, i.HasOpenReadsAtOrBefore(0)) |
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require.True(t, i.HasOpenReadsAtOrBefore(1)) |
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require.True(t, i.HasOpenReadsAtOrBefore(2)) |
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// Close the second read, should now only report open reads for the first read's ref. |
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read2.Close() |
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require.False(t, i.HasOpenReadsAtOrBefore(0)) |
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require.False(t, i.HasOpenReadsAtOrBefore(1)) |
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require.True(t, i.HasOpenReadsAtOrBefore(2)) |
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// Close the second read again: this should do nothing and ensures we can safely call Close() multiple times. |
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read2.Close() |
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require.False(t, i.HasOpenReadsAtOrBefore(0)) |
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require.False(t, i.HasOpenReadsAtOrBefore(1)) |
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require.True(t, i.HasOpenReadsAtOrBefore(2)) |
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// Closing the first read should indicate no further open reads. |
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read1.Close() |
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require.False(t, i.HasOpenReadsAtOrBefore(0)) |
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require.False(t, i.HasOpenReadsAtOrBefore(1)) |
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require.False(t, i.HasOpenReadsAtOrBefore(2)) |
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}
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