public static Blockchain RandomBlockchain(RandomDataOptions options = default(RandomDataOptions))
{
//TODO blockCount algorithm isn't exact
var blockCount = random.Next((options != null ? options.BlockCount : null) ?? 100) + ((options != null ? options.MinimumBlockCount : null) ?? 1);
var blockList = new List <Block>(blockCount);
var chainedBlockList = new List <ChainedBlock>(blockCount);
var previousBlockHash = UInt256.Zero;
var totalWork = new BigInteger(0);
for (var i = 0; i < blockCount; i++)
{
var block = RandomData.RandomBlock(options);
block = block.With(Header: block.Header.With(PreviousBlock: previousBlockHash));
blockList.Add(block);
previousBlockHash = block.Hash;
totalWork += block.Header.CalculateWork();
chainedBlockList.Add(new ChainedBlock(block.Hash, block.Header.PreviousBlock, i, totalWork));
}
var blockListHashes = blockList.Select(x => x.Hash).ToImmutableHashSet();
var utxo = blockList.SelectMany(block =>
block.Transactions.Select((tx, txIndex) =>
new UnspentTx(block.Hash, (UInt32)txIndex, tx.Hash, random.NextImmutableBitArray((options != null ? options.TxOutputCount : null) ?? 100))))
.ToImmutableDictionary(unspentTx => unspentTx.TxHash, unspentTx => unspentTx);
return(new Blockchain
(
chainedBlockList.ToImmutableList(),
blockListHashes,
utxo
));
}
public void TestBlockIsDefault()
{
var defaultBlock = default(Block);
Assert.IsTrue(defaultBlock.IsDefault);
var randomBlock = RandomData.RandomBlock();
Assert.IsFalse(randomBlock.IsDefault);
}
public void TestBlockEquality()
{
var randomBlock = RandomData.RandomBlock();
var sameBlock = new Block
(
header: new BlockHeader(randomBlock.Header.Version, randomBlock.Header.PreviousBlock, randomBlock.Header.MerkleRoot, randomBlock.Header.Time, randomBlock.Header.Bits, randomBlock.Header.Nonce),
transactions: ImmutableArray.Create(randomBlock.Transactions.ToArray())
);
var differentBlock = randomBlock.With(Header: randomBlock.Header.With(Bits: ~randomBlock.Header.Bits));
Assert.IsTrue(randomBlock.Equals(sameBlock));
Assert.IsTrue(randomBlock == sameBlock);
Assert.IsFalse(randomBlock != sameBlock);
Assert.IsFalse(randomBlock.Equals(differentBlock));
Assert.IsFalse(randomBlock == differentBlock);
Assert.IsTrue(randomBlock != differentBlock);
}
