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