298 lines
8.7 KiB
JavaScript
298 lines
8.7 KiB
JavaScript
/* global describe, it, beforeEach */
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var assert = require('assert')
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var ops = require('../src/opcodes')
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var scripts = require('../src/scripts')
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var Address = require('../src/address')
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var BigInteger = require('bigi')
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var ECPair = require('../src/ecpair')
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var Script = require('../src/script')
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var Transaction = require('../src/transaction')
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var TransactionBuilder = require('../src/transaction_builder')
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var fixtures = require('./fixtures/transaction_builder')
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function construct (txb, f, sign) {
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f.inputs.forEach(function (input) {
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var prevTxScript
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if (input.prevTxScript) {
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prevTxScript = Script.fromASM(input.prevTxScript)
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}
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txb.addInput(input.txId, input.vout, input.sequence, prevTxScript)
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})
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f.outputs.forEach(function (output) {
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var script = Script.fromASM(output.script)
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txb.addOutput(script, output.value)
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})
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if (sign === undefined || sign) {
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f.inputs.forEach(function (input, index) {
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input.signs.forEach(function (sign) {
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var keyPair = ECPair.fromWIF(sign.keyPair)
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var redeemScript
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if (sign.redeemScript) {
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redeemScript = Script.fromASM(sign.redeemScript)
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}
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txb.sign(index, keyPair, redeemScript, sign.hashType)
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})
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})
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}
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// FIXME: add support for locktime/version in TransactionBuilder API
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if (f.version !== undefined) {
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txb.tx.version = f.version
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}
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if (f.locktime !== undefined) {
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txb.tx.locktime = f.locktime
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}
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}
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describe('TransactionBuilder', function () {
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var privAddress, privScript
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var prevTx, prevTxHash
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var keyPair
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var txb
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beforeEach(function () {
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txb = new TransactionBuilder()
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prevTx = new Transaction()
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prevTx.addOutput(Address.fromBase58Check('1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH').toOutputScript(), 0)
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prevTx.addOutput(Address.fromBase58Check('1cMh228HTCiwS8ZsaakH8A8wze1JR5ZsP').toOutputScript(), 1)
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prevTxHash = prevTx.getHash()
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keyPair = new ECPair(BigInteger.ONE)
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privAddress = keyPair.getAddress()
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privScript = privAddress.toOutputScript()
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})
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describe('addInput', function () {
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it('accepts a txHash, index [and sequence number]', function () {
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var vin = txb.addInput(prevTxHash, 1, 54)
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assert.equal(vin, 0)
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var txIn = txb.tx.ins[0]
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assert.equal(txIn.hash, prevTxHash)
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assert.equal(txIn.index, 1)
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assert.equal(txIn.sequence, 54)
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assert.equal(txb.inputs[0].prevOutScript, undefined)
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})
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it('accepts a txHash, index [, sequence number and scriptPubKey]', function () {
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var vin = txb.addInput(prevTxHash, 1, 54, prevTx.outs[1].script)
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assert.equal(vin, 0)
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var txIn = txb.tx.ins[0]
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assert.equal(txIn.hash, prevTxHash)
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assert.equal(txIn.index, 1)
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assert.equal(txIn.sequence, 54)
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assert.equal(txb.inputs[0].prevOutScript, prevTx.outs[1].script)
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})
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it('accepts a prevTx, index [and sequence number]', function () {
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var vin = txb.addInput(prevTx, 1, 54)
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assert.equal(vin, 0)
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var txIn = txb.tx.ins[0]
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assert.deepEqual(txIn.hash, prevTxHash)
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assert.equal(txIn.index, 1)
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assert.equal(txIn.sequence, 54)
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assert.equal(txb.inputs[0].prevOutScript, prevTx.outs[1].script)
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})
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it('returns the input index', function () {
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assert.equal(txb.addInput(prevTxHash, 0), 0)
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assert.equal(txb.addInput(prevTxHash, 1), 1)
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})
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it('throws if SIGHASH_ALL has been used to sign any existing scriptSigs', function () {
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txb.addInput(prevTxHash, 0)
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txb.sign(0, keyPair)
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assert.throws(function () {
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txb.addInput(prevTxHash, 0)
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}, /No, this would invalidate signatures/)
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})
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})
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describe('addOutput', function () {
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it('accepts an address string and value', function () {
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var vout = txb.addOutput(privAddress.toBase58Check(), 1000)
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assert.equal(vout, 0)
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var txout = txb.tx.outs[0]
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assert.deepEqual(txout.script, privScript)
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assert.equal(txout.value, 1000)
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})
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it('accepts an Address object and value', function () {
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var vout = txb.addOutput(privAddress, 1000)
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assert.equal(vout, 0)
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var txout = txb.tx.outs[0]
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assert.deepEqual(txout.script, privScript)
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assert.equal(txout.value, 1000)
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})
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it('accepts a ScriptPubKey and value', function () {
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var vout = txb.addOutput(privScript, 1000)
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assert.equal(vout, 0)
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var txout = txb.tx.outs[0]
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assert.deepEqual(txout.script, privScript)
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assert.equal(txout.value, 1000)
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})
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it('throws if SIGHASH_ALL has been used to sign any existing scriptSigs', function () {
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txb.addInput(prevTxHash, 0)
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txb.addOutput(privScript, 2000)
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txb.sign(0, keyPair)
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assert.throws(function () {
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txb.addOutput(privScript, 9000)
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}, /No, this would invalidate signatures/)
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})
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})
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describe('sign', function () {
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fixtures.invalid.sign.forEach(function (f) {
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it('throws on ' + f.exception + ' (' + f.description + ')', function () {
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construct(txb, f, false)
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f.inputs.forEach(function (input, index) {
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input.signs.forEach(function (sign) {
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var keyPair = ECPair.fromWIF(sign.keyPair)
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var redeemScript
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if (sign.redeemScript) {
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redeemScript = Script.fromASM(sign.redeemScript)
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}
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if (!sign.throws) {
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txb.sign(index, keyPair, redeemScript, sign.hashType)
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} else {
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assert.throws(function () {
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txb.sign(index, keyPair, redeemScript, sign.hashType)
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}, new RegExp(f.exception))
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}
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})
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})
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})
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})
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})
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describe('build', function () {
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fixtures.valid.build.forEach(function (f) {
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it('builds "' + f.description + '"', function () {
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construct(txb, f)
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var tx = txb.build()
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assert.equal(tx.toHex(), f.txHex)
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})
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})
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fixtures.invalid.build.forEach(function (f) {
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describe('for ' + (f.description || f.exception), function () {
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beforeEach(function () {
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if (f.txHex) {
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var tx = Transaction.fromHex(f.txHex)
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txb = TransactionBuilder.fromTransaction(tx)
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} else {
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construct(txb, f)
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}
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})
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it('throws', function () {
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assert.throws(function () {
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txb.build()
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}, new RegExp(f.exception))
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})
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if (f.alwaysThrows) return
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it("doesn't throw if building incomplete", function () {
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txb.buildIncomplete()
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})
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})
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})
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})
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describe('multisig', function () {
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fixtures.valid.multisig.forEach(function (f) {
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it(f.description, function () {
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construct(txb, f, false)
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var tx
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f.inputs.forEach(function (input, i) {
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var redeemScript = Script.fromASM(input.redeemScript)
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input.signs.forEach(function (sign) {
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// rebuild the transaction each-time after the first
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if (tx) {
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// do we filter OP_0's beforehand?
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if (sign.filterOP_0) {
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var scriptSig = tx.ins[i].script
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// ignore OP_0 on the front, ignore redeemScript
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var signatures = scriptSig.chunks.slice(1, -1).filter(function (x) { return x !== ops.OP_0 })
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// rebuild/replace the scriptSig without them
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var replacement = scripts.scriptHashInput(scripts.multisigInput(signatures), redeemScript)
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assert.equal(replacement.toASM(), sign.scriptSigFiltered)
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sign.scriptSigFiltered = replacement.toASM()
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tx.ins[i].script = replacement
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}
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// now import it
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txb = TransactionBuilder.fromTransaction(tx)
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}
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var keyPair = ECPair.fromWIF(sign.keyPair)
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txb.sign(i, keyPair, redeemScript, sign.hashType)
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// update the tx
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tx = txb.buildIncomplete()
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// now verify the serialized scriptSig is as expected
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assert.equal(tx.ins[i].script.toASM(), sign.scriptSig)
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})
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})
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tx = txb.build()
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assert.equal(tx.toHex(), f.txHex)
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})
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})
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})
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describe('fromTransaction', function () {
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fixtures.valid.build.forEach(function (f) {
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it('builds the correct TransactionBuilder for ' + f.description, function () {
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var tx = Transaction.fromHex(f.txHex)
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var txb = TransactionBuilder.fromTransaction(tx)
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assert.equal(txb.build().toHex(), f.txHex)
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})
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})
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fixtures.invalid.fromTransaction.forEach(function (f) {
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it('throws on ' + f.exception, function () {
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var tx = Transaction.fromHex(f.txHex)
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assert.throws(function () {
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TransactionBuilder.fromTransaction(tx)
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}, new RegExp(f.exception))
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})
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})
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})
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})
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