443 lines
13 KiB
Go
443 lines
13 KiB
Go
// Copyright (c) 2013-2016 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package blockchain_test
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import (
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"testing"
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"github.com/btcsuite/btcd/blockchain"
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"github.com/btcsuite/btcd/chaincfg"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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)
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// TestHaveBlock tests the HaveBlock API to ensure proper functionality.
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func TestHaveBlock(t *testing.T) {
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// Load up blocks such that there is a side chain.
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// (genesis block) -> 1 -> 2 -> 3 -> 4
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// \-> 3a
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testFiles := []string{
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"blk_0_to_4.dat.bz2",
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"blk_3A.dat.bz2",
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}
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var blocks []*btcutil.Block
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for _, file := range testFiles {
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blockTmp, err := loadBlocks(file)
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if err != nil {
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t.Errorf("Error loading file: %v\n", err)
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return
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}
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blocks = append(blocks, blockTmp...)
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}
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// Create a new database and chain instance to run tests against.
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chain, teardownFunc, err := chainSetup("haveblock",
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&chaincfg.MainNetParams)
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if err != nil {
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t.Errorf("Failed to setup chain instance: %v", err)
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return
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}
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defer teardownFunc()
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// Since we're not dealing with the real block chain, disable
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// checkpoints and set the coinbase maturity to 1.
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chain.DisableCheckpoints(true)
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chain.TstSetCoinbaseMaturity(1)
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for i := 1; i < len(blocks); i++ {
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_, isOrphan, err := chain.ProcessBlock(blocks[i], blockchain.BFNone)
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if err != nil {
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t.Errorf("ProcessBlock fail on block %v: %v\n", i, err)
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return
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}
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if isOrphan {
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t.Errorf("ProcessBlock incorrectly returned block %v "+
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"is an orphan\n", i)
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return
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}
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}
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// Insert an orphan block.
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_, isOrphan, err := chain.ProcessBlock(btcutil.NewBlock(&Block100000),
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blockchain.BFNone)
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if err != nil {
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t.Errorf("Unable to process block: %v", err)
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return
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}
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if !isOrphan {
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t.Errorf("ProcessBlock indicated block is an not orphan when " +
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"it should be\n")
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return
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}
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tests := []struct {
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hash string
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want bool
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}{
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// Genesis block should be present (in the main chain).
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{hash: chaincfg.MainNetParams.GenesisHash.String(), want: true},
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// Block 3a should be present (on a side chain).
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{hash: "00000000474284d20067a4d33f6a02284e6ef70764a3a26d6a5b9df52ef663dd", want: true},
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// Block 100000 should be present (as an orphan).
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{hash: "000000000003ba27aa200b1cecaad478d2b00432346c3f1f3986da1afd33e506", want: true},
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// Random hashes should not be available.
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{hash: "123", want: false},
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}
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for i, test := range tests {
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hash, err := chainhash.NewHashFromStr(test.hash)
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if err != nil {
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t.Errorf("NewHashFromStr: %v", err)
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continue
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}
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result, err := chain.HaveBlock(hash)
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if err != nil {
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t.Errorf("HaveBlock #%d unexpected error: %v", i, err)
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return
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}
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if result != test.want {
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t.Errorf("HaveBlock #%d got %v want %v", i, result,
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test.want)
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continue
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}
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}
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}
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// TestCalcSequenceLock tests the LockTimeToSequence function, and the
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// CalcSequenceLock method of a Chain instance. The tests exercise several
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// combinations of inputs to the CalcSequenceLock function in order to ensure
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// the returned SequenceLocks are correct for each test instance.
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func TestCalcSequenceLock(t *testing.T) {
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fileName := "blk_0_to_4.dat.bz2"
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blocks, err := loadBlocks(fileName)
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if err != nil {
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t.Errorf("Error loading file: %v\n", err)
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return
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}
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// Create a new database and chain instance to run tests against.
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chain, teardownFunc, err := chainSetup("haveblock", &chaincfg.MainNetParams)
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if err != nil {
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t.Errorf("Failed to setup chain instance: %v", err)
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return
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}
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defer teardownFunc()
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// Since we're not dealing with the real block chain, disable
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// checkpoints and set the coinbase maturity to 1.
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chain.DisableCheckpoints(true)
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chain.TstSetCoinbaseMaturity(1)
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// Load all the blocks into our test chain.
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for i := 1; i < len(blocks); i++ {
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_, isOrphan, err := chain.ProcessBlock(blocks[i], blockchain.BFNone)
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if err != nil {
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t.Errorf("ProcessBlock fail on block %v: %v\n", i, err)
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return
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}
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if isOrphan {
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t.Errorf("ProcessBlock incorrectly returned block %v "+
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"is an orphan\n", i)
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return
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}
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}
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// Create with all the utxos within the create created above.
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utxoView := blockchain.NewUtxoViewpoint()
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for blockHeight, block := range blocks {
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for _, tx := range block.Transactions() {
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utxoView.AddTxOuts(tx, int32(blockHeight))
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}
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}
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utxoView.SetBestHash(blocks[len(blocks)-1].Hash())
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// The median past time from the point of view of the second to last
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// block in the chain.
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medianTime := blocks[2].MsgBlock().Header.Timestamp.Unix()
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// The median past time of the *next* block will be the timestamp of
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// the 2nd block due to the way MTP is calculated in order to be
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// compatible with Bitcoin Core.
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nextMedianTime := blocks[2].MsgBlock().Header.Timestamp.Unix()
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// We'll refer to this utxo within each input in the transactions
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// created below. This block that includes this UTXO has a height of 4.
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targetTx := blocks[4].Transactions()[0]
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utxo := wire.OutPoint{
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Hash: *targetTx.Hash(),
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Index: 0,
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}
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// Add an additional transaction which will serve as our unconfirmed
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// output.
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var fakeScript []byte
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unConfTx := &wire.MsgTx{
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TxOut: []*wire.TxOut{{
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PkScript: fakeScript,
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Value: 5,
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}},
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}
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unConfUtxo := wire.OutPoint{
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Hash: unConfTx.TxHash(),
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Index: 0,
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}
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// Adding a utxo with a height of 0x7fffffff indicates that the output
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// is currently unmined.
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utxoView.AddTxOuts(btcutil.NewTx(unConfTx), 0x7fffffff)
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tests := []struct {
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tx *btcutil.Tx
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view *blockchain.UtxoViewpoint
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want *blockchain.SequenceLock
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mempool bool
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}{
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// A transaction of version one should disable sequence locks
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// as the new sequence number semantics only apply to
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// transactions version 2 or higher.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 1,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(false, 3),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: -1,
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BlockHeight: -1,
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},
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},
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// A transaction with a single input, that a max int sequence
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// number. This sequence number has the high bit set, so
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// sequence locks should be disabled.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: utxo,
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Sequence: wire.MaxTxInSequenceNum,
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: -1,
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BlockHeight: -1,
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},
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},
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// A transaction with a single input whose lock time is
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// expressed in seconds. However, the specified lock time is
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// below the required floor for time based lock times since
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// they have time granularity of 512 seconds. As a result, the
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// seconds lock-time should be just before the median time of
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// the targeted block.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(true, 2),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: medianTime - 1,
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BlockHeight: -1,
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},
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},
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// A transaction with a single input whose lock time is
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// expressed in seconds. The number of seconds should be 1023
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// seconds after the median past time of the last block in the
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// chain.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(true, 1024),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: medianTime + 1023,
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BlockHeight: -1,
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},
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},
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// A transaction with multiple inputs. The first input has a
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// sequence lock in blocks with a value of 4. The last input
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// has a sequence number with a value of 5, but has the disable
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// bit set. So the first lock should be selected as it's the
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// target lock as its the furthest in the future lock that
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// isn't disabled.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(true, 2560),
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}, {
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(false, 3) |
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wire.SequenceLockTimeDisabled,
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}, {
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(false, 3),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: medianTime + (5 << wire.SequenceLockTimeGranularity) - 1,
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BlockHeight: 6,
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},
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},
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// Transaction has a single input spending the genesis block
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// transaction. The input's sequence number is encodes a
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// relative lock-time in blocks (3 blocks). The sequence lock
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// should have a value of -1 for seconds, but a block height of
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// 6 meaning it can be included at height 7.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(false, 3),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: -1,
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BlockHeight: 6,
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},
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},
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// A transaction with two inputs with lock times expressed in
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// seconds. The selected sequence lock value for seconds should
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// be the time further in the future.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(true, 5120),
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}, {
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(true, 2560),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: medianTime + (10 << wire.SequenceLockTimeGranularity) - 1,
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BlockHeight: -1,
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},
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},
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// A transaction with two inputs with lock times expressed in
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// seconds. The selected sequence lock value for blocks should
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// be the height further in the future, so a height of 10
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// indicating in can be included at height 7.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(false, 1),
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}, {
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(false, 7),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: -1,
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BlockHeight: 10,
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},
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},
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// A transaction with multiple inputs. Two inputs are time
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// based, and the other two are input maturity based. The lock
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// lying further into the future for both inputs should be
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// chosen.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(true, 2560),
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}, {
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(true, 6656),
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}, {
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(false, 3),
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}, {
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PreviousOutPoint: utxo,
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Sequence: blockchain.LockTimeToSequence(false, 9),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: medianTime + (13 << wire.SequenceLockTimeGranularity) - 1,
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BlockHeight: 12,
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},
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},
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// A transaction with a single unconfirmed input. As the input
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// is confirmed, the height of the input should be interpreted
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// as the height of the *next* block. So the relative block
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// lock should be based from a height of 5 rather than a height
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// of 4.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: unConfUtxo,
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Sequence: blockchain.LockTimeToSequence(false, 2),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: -1,
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BlockHeight: 6,
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},
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},
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// A transaction with a single unconfirmed input. The input has
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// a time based lock, so the lock time should be based off the
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// MTP of the *next* block.
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{
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tx: btcutil.NewTx(&wire.MsgTx{
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Version: 2,
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TxIn: []*wire.TxIn{{
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PreviousOutPoint: unConfUtxo,
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Sequence: blockchain.LockTimeToSequence(true, 1024),
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}},
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}),
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view: utxoView,
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want: &blockchain.SequenceLock{
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Seconds: nextMedianTime + 1023,
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BlockHeight: -1,
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},
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},
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}
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t.Logf("Running %v SequenceLock tests", len(tests))
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for i, test := range tests {
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seqLock, err := chain.CalcSequenceLock(test.tx, test.view, test.mempool)
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if err != nil {
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t.Fatalf("test #%d, unable to calc sequence lock: %v", i, err)
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}
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if seqLock.Seconds != test.want.Seconds {
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t.Fatalf("test #%d got %v seconds want %v seconds",
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i, seqLock.Seconds, test.want.Seconds)
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}
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if seqLock.BlockHeight != test.want.BlockHeight {
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t.Fatalf("test #%d got height of %v want height of %v ",
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i, seqLock.BlockHeight, test.want.BlockHeight)
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}
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}
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}
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