public async Task FirstLastTest()
{
IDbStore columnFamilyDbStore = this.rocksDbStoreProvider.GetColumnStoreFamily("firstLastTest");
string firstKey = "firstKey";
string firstValue = "firstValue";
await columnFamilyDbStore.Put(firstKey.ToBytes(), firstValue.ToBytes());
for (int i = 0; i < 10; i++)
{
string key = $"key{i}";
string value = "$value{i}";
await columnFamilyDbStore.Put(key.ToBytes(), value.ToBytes());
}
string lastKey = "lastKey";
string lastValue = "lastValue";
await columnFamilyDbStore.Put(lastKey.ToBytes(), lastValue.ToBytes());
Option <(byte[], byte[])> firstEntryOption = await columnFamilyDbStore.GetFirstEntry();
Assert.True(firstEntryOption.HasValue);
(byte[] key, byte[] value)firstEntry = firstEntryOption.OrDefault();
Assert.Equal(firstKey, firstEntry.key.FromBytes());
Assert.Equal(firstValue, firstEntry.value.FromBytes());
Option <(byte[], byte[])> lastEntryOption = await columnFamilyDbStore.GetLastEntry();
Assert.True(lastEntryOption.HasValue);
(byte[] key, byte[] value)lastEntry = lastEntryOption.OrDefault();
Assert.Equal(lastKey, lastEntry.key.FromBytes());
Assert.Equal(lastValue, lastEntry.value.FromBytes());
}