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0be3044b7e
* rename * rename "make grpc" * rename "abi bindings templates" * rename "abi bindings templates"
56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package bitmapdb_test
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import (
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"testing"
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"github.com/RoaringBitmap/roaring"
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"github.com/ledgerwatch/erigon/ethdb/bitmapdb"
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"github.com/stretchr/testify/require"
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)
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func TestCutLeft(t *testing.T) {
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bm := roaring.New()
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for j := 0; j < 10_000; j += 20 {
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bm.AddRange(uint64(j), uint64(j+10))
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}
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N := uint64(1024)
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for bm.GetCardinality() > 0 {
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lft := bitmapdb.CutLeft(bm, N)
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lftSz := lft.GetSerializedSizeInBytes()
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if bm.GetCardinality() > 0 {
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require.True(t, lftSz > N-256 && lftSz < N+256)
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} else {
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require.True(t, lft.GetSerializedSizeInBytes() > 0)
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require.True(t, lftSz < N+256)
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}
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}
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bm = roaring.New()
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for j := 0; j < 10_000; j += 20 {
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bm.AddRange(uint64(j), uint64(j+10))
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}
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N = uint64(2048)
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for bm.GetCardinality() > 0 {
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lft := bitmapdb.CutLeft(bm, N)
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lftSz := lft.GetSerializedSizeInBytes()
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if bm.GetCardinality() > 0 {
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require.True(t, lftSz > N-256 && lftSz < N+256)
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} else {
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require.True(t, lft.GetSerializedSizeInBytes() > 0)
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require.True(t, lftSz < N+256)
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}
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}
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bm = roaring.New()
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bm.Add(1)
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lft := bitmapdb.CutLeft(bm, N)
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require.True(t, lft.GetSerializedSizeInBytes() > 0)
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require.True(t, lft.GetCardinality() == 1)
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require.True(t, bm.GetCardinality() == 0)
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bm = roaring.New()
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lft = bitmapdb.CutLeft(bm, N)
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require.True(t, lft == nil)
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require.True(t, bm.GetCardinality() == 0)
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}
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