127 lines
4.1 KiB
JavaScript
127 lines
4.1 KiB
JavaScript
const { describe, it, before } = require('mocha')
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const assert = require('assert')
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const bitcoin = require('../../')
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const regtestUtils = require('./_regtest')
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const regtest = regtestUtils.network
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const bip68 = require('bip68')
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const alice = bitcoin.ECPair.fromWIF('cScfkGjbzzoeewVWmU2hYPUHeVGJRDdFt7WhmrVVGkxpmPP8BHWe', regtest)
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const bob = bitcoin.ECPair.fromWIF('cMkopUXKWsEzAjfa1zApksGRwjVpJRB3831qM9W4gKZsLwjHXA9x', regtest)
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describe('bitcoinjs-lib (transactions w/ CSV)', () => {
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// force update MTP
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before(async () => {
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await regtestUtils.mine(11)
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})
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const hashType = bitcoin.Transaction.SIGHASH_ALL
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// IF MTP (from when confirmed) > seconds, aQ can redeem
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function csvCheckSigOutput (aQ, bQ, sequence) {
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return bitcoin.script.compile([
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bitcoin.opcodes.OP_IF,
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bitcoin.script.number.encode(sequence),
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bitcoin.opcodes.OP_CHECKSEQUENCEVERIFY,
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bitcoin.opcodes.OP_DROP,
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bitcoin.opcodes.OP_ELSE,
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bQ.publicKey,
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bitcoin.opcodes.OP_CHECKSIGVERIFY,
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bitcoin.opcodes.OP_ENDIF,
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aQ.publicKey,
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bitcoin.opcodes.OP_CHECKSIG
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])
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}
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// expiry will pass, {Alice's signature} OP_TRUE
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it('can create (and broadcast via 3PBP) a Transaction where Alice can redeem the output after the expiry (in the future)', async () => {
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// 5 blocks from now
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const sequence = bip68.encode({ blocks: 5 })
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const p2sh = bitcoin.payments.p2sh({
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redeem: {
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output: csvCheckSigOutput(alice, bob, sequence)
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},
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network: regtest
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})
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// fund the P2SH(CSV) address
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const unspent = await regtestUtils.faucet(p2sh.address, 1e5)
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const txb = new bitcoin.TransactionBuilder(regtest)
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txb.addInput(unspent.txId, unspent.vout, sequence)
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txb.addOutput(regtestUtils.RANDOM_ADDRESS, 7e4)
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// {Alice's signature} OP_TRUE
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const tx = txb.buildIncomplete()
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const signatureHash = tx.hashForSignature(0, p2sh.redeem.output, hashType)
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const redeemScriptSig = bitcoin.payments.p2sh({
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network: regtest,
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redeem: {
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network: regtest,
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output: p2sh.redeem.output,
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input: bitcoin.script.compile([
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bitcoin.script.signature.encode(alice.sign(signatureHash), hashType),
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bitcoin.opcodes.OP_TRUE
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])
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}
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}).input
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tx.setInputScript(0, redeemScriptSig)
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// TODO: test that it failures _prior_ to expiry, unfortunately, race conditions when run concurrently
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// ...
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// into the future!
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await regtestUtils.mine(10)
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await regtestUtils.broadcast(tx.toHex())
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await regtestUtils.verify({
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txId: tx.getId(),
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address: regtestUtils.RANDOM_ADDRESS,
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vout: 0,
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value: 7e4
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})
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})
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// expiry in the future, {Alice's signature} OP_TRUE
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it('can create (but fail to broadcast via 3PBP) a Transaction where Alice attempts to redeem before the expiry', async () => {
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// two hours after confirmation
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const sequence = bip68.encode({ seconds: 7168 })
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const p2sh = bitcoin.payments.p2sh({
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network: regtest,
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redeem: {
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output: csvCheckSigOutput(alice, bob, sequence)
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}
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})
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// fund the P2SH(CSV) address
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const unspent = await regtestUtils.faucet(p2sh.address, 2e4)
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const txb = new bitcoin.TransactionBuilder(regtest)
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txb.addInput(unspent.txId, unspent.vout, sequence)
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txb.addOutput(regtestUtils.RANDOM_ADDRESS, 1e4)
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// {Alice's signature} OP_TRUE
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const tx = txb.buildIncomplete()
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const signatureHash = tx.hashForSignature(0, p2sh.redeem.output, hashType)
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const redeemScriptSig = bitcoin.payments.p2sh({
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network: regtest,
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redeem: {
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network: regtest,
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output: p2sh.redeem.output,
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input: bitcoin.script.compile([
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bitcoin.script.signature.encode(alice.sign(signatureHash), hashType),
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bitcoin.script.signature.encode(bob.sign(signatureHash), hashType),
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bitcoin.opcodes.OP_TRUE
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])
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}
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}).input
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tx.setInputScript(0, redeemScriptSig)
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await regtestUtils.broadcast(tx.toHex()).catch(err => {
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assert.throws(() => {
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if (err) throw err
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}, /Error: non-BIP68-final \(code 64\)/)
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})
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})
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})
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