mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-23 12:07:17 +00:00
231e468e19
git-subtree-dir: erigon-lib git-subtree-mainline:3c8cbda809git-subtree-split:93d9c9d9fe
72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
/*
|
|
Copyright 2022 Erigon contributors
|
|
|
|
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 bitmapdb_test
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/RoaringBitmap/roaring"
|
|
"github.com/ledgerwatch/erigon-lib/kv/bitmapdb"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestCutLeft(t *testing.T) {
|
|
bm := roaring.New()
|
|
for j := 0; j < 10_000; j += 20 {
|
|
bm.AddRange(uint64(j), uint64(j+10))
|
|
}
|
|
N := uint64(1024)
|
|
for bm.GetCardinality() > 0 {
|
|
lft := bitmapdb.CutLeft(bm, N)
|
|
lftSz := lft.GetSerializedSizeInBytes()
|
|
if bm.GetCardinality() > 0 {
|
|
require.True(t, lftSz > N-256 && lftSz < N+256)
|
|
} else {
|
|
require.True(t, lft.GetSerializedSizeInBytes() > 0)
|
|
require.True(t, lftSz < N+256)
|
|
}
|
|
}
|
|
|
|
bm = roaring.New()
|
|
for j := 0; j < 10_000; j += 20 {
|
|
bm.AddRange(uint64(j), uint64(j+10))
|
|
}
|
|
N = uint64(2048)
|
|
for bm.GetCardinality() > 0 {
|
|
lft := bitmapdb.CutLeft(bm, N)
|
|
lftSz := lft.GetSerializedSizeInBytes()
|
|
if bm.GetCardinality() > 0 {
|
|
require.True(t, lftSz > N-256 && lftSz < N+256)
|
|
} else {
|
|
require.True(t, lft.GetSerializedSizeInBytes() > 0)
|
|
require.True(t, lftSz < N+256)
|
|
}
|
|
}
|
|
|
|
bm = roaring.New()
|
|
bm.Add(1)
|
|
lft := bitmapdb.CutLeft(bm, N)
|
|
require.True(t, lft.GetSerializedSizeInBytes() > 0)
|
|
require.True(t, lft.GetCardinality() == 1)
|
|
require.True(t, bm.GetCardinality() == 0)
|
|
|
|
bm = roaring.New()
|
|
lft = bitmapdb.CutLeft(bm, N)
|
|
require.True(t, lft == nil)
|
|
require.True(t, bm.GetCardinality() == 0)
|
|
}
|