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[Fix]: Behavior when keyPrefix is null in different IStore.Seek impls. #3682

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Merged
merged 4 commits into from
Jan 21, 2025
Merged

[Fix]: Behavior when keyPrefix is null in different IStore.Seek impls. #3682

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80c2e9c
fix: same behavior if keyPrefix is null in IStore.Seek
nan01ab Jan 20, 2025
85b885c
Update src/Plugins/LevelDBStore/IO/Data/LevelDB/Helper.cs
nan01ab Jan 21, 2025
80d3812
Merge branch 'master' into fix.seek-with-null
cschuchardt88 Jan 21, 2025
29dccbb
Update src/Neo/Persistence/IReadOnlyStore.cs
shargon Jan 21, 2025
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2 changes: 1 addition & 1 deletion src/Neo/Persistence/IReadOnlyStore.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@ public interface IReadOnlyStore
/// </summary>
/// <param name="keyOrPrefix">The key(i.e. start key) or prefix to be sought.</param>
/// <param name="direction">The direction of seek.</param>
/// <returns>An enumerator containing all the entries after seeking.</returns>
/// <returns>An enumerator containing all the entries after(Forward) or before(Backward) seeking.</returns>
IEnumerable<(byte[] Key, byte[] Value)> Seek(byte[] keyOrPrefix, SeekDirection direction);

/// <summary>
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2 changes: 2 additions & 0 deletions src/Plugins/LevelDBStore/IO/Data/LevelDB/Helper.cs
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Expand Up @@ -20,6 +20,8 @@ public static class Helper
{
public static IEnumerable<(byte[], byte[])> Seek(this DB db, ReadOptions options, byte[] keyOrPrefix, SeekDirection direction)
{
if (keyOrPrefix == null) keyOrPrefix = Array.Empty<byte>();

using Iterator it = db.CreateIterator(options);
if (direction == SeekDirection.Forward)
{
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14 changes: 14 additions & 0 deletions tests/Neo.Plugins.Storage.Tests/StoreTest.cs
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Expand Up @@ -301,6 +301,20 @@ private void TestStorage(IStore store)
CollectionAssert.AreEqual(new byte[] { 0x01 }, entries[0].Value);
CollectionAssert.AreEqual(new byte[] { 0x00, 0x00, 0x00 }, entries[1].Key);
CollectionAssert.AreEqual(new byte[] { 0x00 }, entries[1].Value);

// Seek null
entries = store.Seek(null, SeekDirection.Forward).ToArray();
Assert.AreEqual(3, entries.Length);
CollectionAssert.AreEqual(new byte[] { 0x00, 0x00, 0x00 }, entries[0].Key);
CollectionAssert.AreEqual(new byte[] { 0x00, 0x00, 0x01 }, entries[1].Key);
CollectionAssert.AreEqual(new byte[] { 0x00, 0x01, 0x02 }, entries[2].Key);

// Seek empty
entries = store.Seek([], SeekDirection.Forward).ToArray();
Assert.AreEqual(3, entries.Length);
CollectionAssert.AreEqual(new byte[] { 0x00, 0x00, 0x00 }, entries[0].Key);
CollectionAssert.AreEqual(new byte[] { 0x00, 0x00, 0x01 }, entries[1].Key);
CollectionAssert.AreEqual(new byte[] { 0x00, 0x01, 0x02 }, entries[2].Key);
}
}

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