218 lines
9.3 KiB
C#
218 lines
9.3 KiB
C#
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using NBitcoin;
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using PalladiumWallet.Core.Chain;
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using PalladiumWallet.Core.Crypto;
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using PalladiumWallet.Core.Net;
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using PalladiumWallet.Core.Wallet;
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using PalladiumWallet.Tests.Net;
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namespace PalladiumWallet.Tests.Wallet;
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/// <summary>
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/// Tests for the transaction detail assembly (§10): fee from resolved inputs,
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/// mine/theirs attribution, RBF flag, coinbase, and the degraded paths when the
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/// server cannot provide a previous transaction.
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/// </summary>
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public class TransactionInspectorTests
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{
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private static readonly Network Net = PalladiumNetworks.Regtest;
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private static HdAccount Account()
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{
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Assert.True(Bip39.TryParse(
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"abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about",
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out var mnemonic));
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return HdAccount.FromMnemonic(mnemonic!, null, ScriptKind.NativeSegwit, ChainProfiles.Regtest);
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}
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/// <summary>Funding (1M sats to receive/0) + spend (600k external, 390k change/0, 10k fee, RBF).</summary>
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private static (Transaction Funding, Transaction Spend, BitcoinAddress External, HdAccount Account) SpendPair()
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{
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var account = Account();
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var funding = Net.CreateTransaction();
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funding.Inputs.Add(new TxIn(new OutPoint(uint256.One, 0)));
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funding.Outputs.Add(Money.Satoshis(1_000_000), account.GetReceiveAddress(0));
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var external = new Key().PubKey.GetAddress(ScriptPubKeyType.Segwit, Net);
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var spend = Net.CreateTransaction();
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spend.Inputs.Add(new TxIn(new OutPoint(funding, 0)) { Sequence = 0xfffffffd });
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spend.Outputs.Add(Money.Satoshis(600_000), external);
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spend.Outputs.Add(Money.Satoshis(390_000), account.GetChangeAddress(0));
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return (funding, spend, external, account);
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}
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private static async Task<(FakeElectrumServer Server, ElectrumClient Client)> StartAsync(
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params Transaction[] served)
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{
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var byId = served.ToDictionary(t => t.GetHash().ToString());
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var server = new FakeElectrumServer();
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server.Handle("blockchain.transaction.get", p =>
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byId.TryGetValue(p[0].GetString()!, out var tx)
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? tx.ToHex()
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: throw new FakeElectrumError(-32600, "no such transaction"));
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server.Handle("blockchain.block.header", p =>
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{
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var height = p[0].GetInt32();
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var header = Net.Consensus.ConsensusFactory.CreateBlockHeader();
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header.BlockTime = DateTimeOffset.FromUnixTimeSeconds(1_700_000_000 + height);
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header.Bits = new Target(0x1d00ffffu);
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return Convert.ToHexString(header.ToBytes()).ToLowerInvariant();
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});
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var client = await ElectrumClient.ConnectAsync(server.Host, server.Port, useSsl: false);
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return (server, client);
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}
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private static HashSet<string> Owned(HdAccount account) =>
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[
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account.GetReceiveAddress(0).ToString(),
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account.GetChangeAddress(0).ToString(),
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];
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[Fact]
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public async Task Una_spesa_confermata_riporta_fee_conferme_e_attribuzione_mine_theirs()
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{
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var (funding, spend, external, account) = SpendPair();
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var (server, client) = await StartAsync(funding, spend);
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await using var _ = server; await using var __ = client;
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var details = await TransactionInspector.FetchAsync(
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client, Net, spend.GetHash().ToString(), tipHeight: 200, height: 101,
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Owned(account), netSats: -610_000, verified: true);
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Assert.Equal(10_000, details.FeeSats);
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Assert.Equal(1_000_000, details.TotalInSats);
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Assert.Equal(990_000, details.TotalOutSats);
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Assert.Equal(100, details.Confirmations); // 200 − 101 + 1
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Assert.True(details.RbfSignaled);
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Assert.True(details.Verified);
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Assert.False(details.IsCoinbase);
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Assert.False(details.IsIncoming);
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Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(1_700_000_101), details.BlockTime);
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Assert.Equal((double)10_000 / details.VirtualSize, details.FeeRateSatPerVb);
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var input = Assert.Single(details.Inputs);
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Assert.True(input.IsMine);
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Assert.Equal(1_000_000, input.AmountSats);
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Assert.Equal(account.GetReceiveAddress(0).ToString(), input.Address);
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Assert.Equal(2, details.Outputs.Count);
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Assert.Equal(600_000, details.SentToOthersSats);
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Assert.Equal(390_000, details.ReceivedSats);
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Assert.Contains(details.Outputs, o => o.IsMine && o.AmountSats == 390_000);
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Assert.Contains(details.Outputs, o => !o.IsMine && o.AmountSats == 600_000);
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// Outgoing tx: the counterparty is the external recipient.
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Assert.Equal([external.ToString()], details.CounterpartyAddresses);
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}
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[Fact]
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public async Task Una_ricezione_indica_il_mittente_come_controparte()
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{
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var account = Account();
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var senderKey = new Key();
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var senderAddr = senderKey.PubKey.GetAddress(ScriptPubKeyType.Segwit, Net);
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// The sender's coin, then the payment to us spending it.
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var senderFunding = Net.CreateTransaction();
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senderFunding.Inputs.Add(new TxIn(new OutPoint(uint256.One, 1)));
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senderFunding.Outputs.Add(Money.Satoshis(2_000_000), senderAddr);
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var payment = Net.CreateTransaction();
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payment.Inputs.Add(new TxIn(new OutPoint(senderFunding, 0)));
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payment.Outputs.Add(Money.Satoshis(1_500_000), account.GetReceiveAddress(0));
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var (server, client) = await StartAsync(senderFunding, payment);
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await using var _ = server; await using var __ = client;
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var details = await TransactionInspector.FetchAsync(
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client, Net, payment.GetHash().ToString(), tipHeight: 200, height: 150,
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Owned(account), netSats: 1_500_000, verified: true);
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Assert.True(details.IsIncoming);
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Assert.Equal([senderAddr.ToString()], details.CounterpartyAddresses);
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Assert.Equal(500_000, details.FeeSats); // 2M in − 1.5M out
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}
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[Fact]
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public async Task Una_coinbase_non_ha_fee_ne_importi_in_ingresso()
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{
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var account = Account();
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var coinbase = Net.CreateTransaction();
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coinbase.Inputs.Add(new TxIn());
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coinbase.Outputs.Add(Money.Satoshis(5_000_000_000), account.GetReceiveAddress(0));
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var (server, client) = await StartAsync(coinbase);
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await using var _ = server; await using var __ = client;
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var details = await TransactionInspector.FetchAsync(
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client, Net, coinbase.GetHash().ToString(), tipHeight: 200, height: 190,
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Owned(account), netSats: 5_000_000_000, verified: true);
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Assert.True(details.IsCoinbase);
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Assert.Null(details.FeeSats);
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Assert.Null(details.TotalInSats);
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Assert.Null(details.FeeRateSatPerVb);
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Assert.Equal(11, details.Confirmations);
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var input = Assert.Single(details.Inputs);
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Assert.True(input.IsCoinbase);
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Assert.Null(input.AmountSats);
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// No previous transactions to resolve.
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Assert.Equal(0, server.CallCount("blockchain.transaction.get") - 1); // only the coinbase itself
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}
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[Fact]
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public async Task Se_la_tx_precedente_non_e_recuperabile_la_fee_resta_ignota()
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{
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var (funding, spend, _, account) = SpendPair();
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// The server only knows the spend: the funding lookup fails.
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var (server, client) = await StartAsync(spend);
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await using var _ = server; await using var __ = client;
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var details = await TransactionInspector.FetchAsync(
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client, Net, spend.GetHash().ToString(), tipHeight: 200, height: 101,
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Owned(account), netSats: -610_000, verified: false);
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Assert.Null(details.FeeSats);
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Assert.Null(details.TotalInSats);
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var input = Assert.Single(details.Inputs);
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Assert.Null(input.AmountSats);
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Assert.False(input.IsMine); // unresolvable → not attributable
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Assert.Equal(funding.GetHash().ToString(), input.PrevTxid);
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}
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[Fact]
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public async Task Una_tx_in_mempool_non_ha_conferme_ne_timestamp()
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{
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var (funding, spend, _, account) = SpendPair();
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var (server, client) = await StartAsync(funding, spend);
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await using var _ = server; await using var __ = client;
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var details = await TransactionInspector.FetchAsync(
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client, Net, spend.GetHash().ToString(), tipHeight: 200, height: 0,
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Owned(account), netSats: -610_000, verified: false);
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Assert.Equal(0, details.Confirmations);
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Assert.Null(details.BlockTime);
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Assert.Equal(0, server.CallCount("blockchain.block.header"));
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}
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[Fact]
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public async Task La_cache_delle_tx_evita_le_richieste_al_server()
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{
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var (funding, spend, _, account) = SpendPair();
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var cache = new Dictionary<string, Transaction>
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{
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[funding.GetHash().ToString()] = funding,
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[spend.GetHash().ToString()] = spend,
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};
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var (server, client) = await StartAsync();
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await using var _ = server; await using var __ = client;
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var details = await TransactionInspector.FetchAsync(
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client, Net, spend.GetHash().ToString(), tipHeight: 200, height: 0,
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Owned(account), netSats: -610_000, verified: false, cache);
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Assert.Equal(10_000, details.FeeSats);
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Assert.Equal(0, server.CallCount("blockchain.transaction.get"));
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}
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}
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