TxBuilder: Initial commit and tests
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Daniel Cousens
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3 changed files with 500 additions and 0 deletions
test
113
test/fixtures/transaction_builder.json
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113
test/fixtures/transaction_builder.json
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{
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"valid": {
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"build": [
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{
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"description": "pubKeyHash 1:1 transaction",
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"txid": "bd641f4b0aa8bd70189ab45e935c4762f0e1c49f294b4779d79887937b7cf42e",
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"inputs": [
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{
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"index": 0,
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"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
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"privKeys": ["KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU73sVHnoWn"]
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}
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],
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"outputs": [
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{
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"script": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
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"value": 10000
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}
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]
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},
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{
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"description": "2-of-2 P2SH multisig Transaction",
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"txid": "8c500ce6eef6c78a10de923b68394cf31120151bdc4600e4b12de865defa9d24",
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"inputs": [
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{
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"index": 0,
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"prevTx": "4971f016798a167331bcbc67248313fbc444c6e92e4416efd06964425588f5cf",
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"privKeys": ["91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgwmaKkrx", "91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgww7vXtT"],
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"redeemScript": "OP_2 0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8 04c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee51ae168fea63dc339a3c58419466ceaeef7f632653266d0e1236431a950cfe52a OP_2 OP_CHECKMULTISIG"
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}
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],
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"outputs": [
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{
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"script": "OP_DUP OP_HASH160 faf1d99bf040ea9c7f8cc9f14ac6733ad75ce246 OP_EQUALVERIFY OP_CHECKSIG",
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"value": 10000
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}
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]
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}
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]
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},
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"invalid": {
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"build": [
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{
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"exception": "Transaction has no inputs",
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"hex": "",
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"outputs": [
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{
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"script": "",
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"value": 1000
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}
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]
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},
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{
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"exception": "Transaction has no outputs",
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"hex": "",
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"inputs": [
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{
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"hash": "",
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"index": 0
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}
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]
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},
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{
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"exception": "Transaction has no signatures",
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"hex": "",
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"inputs": [
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{
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"hash": "",
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"index": 0
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}
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],
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"outputs": [
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{
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"script": "",
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"value": 1000
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}
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]
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},
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{
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"exception": "Transaction is missing signatures",
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"hex": "",
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"inputs": [
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{
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"hash": "",
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"index": 0
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},
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{
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"hash": "",
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"index": 1
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}
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],
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"outputs": [
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{
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"script": "",
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"value": 1000
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}
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],
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"signatures": [
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{
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"wif": "",
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"index": 0
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}
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]
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}
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],
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"fromTransaction": [
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{
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"exception": "Transaction contains unsupported script types",
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"hex": ""
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}
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]
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}
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}
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228
test/transaction_builder.js
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228
test/transaction_builder.js
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var assert = require('assert')
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var ecdsa = require('../src/ecdsa')
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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 ECKey = require('../src/eckey')
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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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describe('TransactionBuilder', function() {
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var privAddress, privScript
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var prevTx, prevTxHash
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var privKey
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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('1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH', 0)
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prevTx.addOutput('1cMh228HTCiwS8ZsaakH8A8wze1JR5ZsP', 1)
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prevTxHash = prevTx.getHash()
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prevTxId = prevTx.getId()
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privKey = new ECKey(BigInteger.ONE, false)
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privAddress = privKey.pub.getAddress()
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privScript = privAddress.toOutputScript()
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value = 10000
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})
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describe('addInput', function() {
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it('accepts a txHash and index', function() {
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var vin = txb.addInput(prevTxHash, 1)
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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(txb.prevOutScripts[0], undefined)
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})
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it('accepts a txHash, index and scriptPubKey', function() {
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var vin = txb.addInput(prevTxHash, 1, 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(txb.prevOutScripts[0], prevTx.outs[1].script)
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})
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it('accepts a prevTx and index', function() {
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var vin = txb.addInput(prevTx, 1)
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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(txb.prevOutScripts[0], 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 a Tx and prevOutScript is given', function() {
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assert.throws(function() {
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txb.addInput(prevTx, 0, privScript)
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}, /Unnecessary Script provided/)
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})
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it('throws if prevOutScript is not supported', function() {
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assert.throws(function() {
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txb.addInput(prevTxHash, 0, Script.EMPTY)
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}, /PrevOutScript not supported \(nonstandard\)/)
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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, privKey)
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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('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, value)
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txb.sign(0, privKey)
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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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describe('when prevOutScript is undefined', function() {
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it('assumes pubKeyHash', function() {
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txb.addInput(prevTxHash, 0)
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txb.sign(0, privKey)
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assert.strictEqual(txb.signatures[0].redeemScript, undefined)
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assert.equal(txb.signatures[0].scriptType, 'pubkeyhash')
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})
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})
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describe('when redeemScript is defined', function() {
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it('assumes scriptHash', function() {
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txb.addInput(prevTxHash, 0)
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txb.sign(0, privKey, privScript)
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assert.equal(txb.signatures[0].redeemScript, privScript)
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})
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it('throws if prevOutScript is not P2SH', function() {
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txb.addInput(prevTx, 0)
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assert.throws(function() {
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txb.sign(0, privKey, privScript)
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}, /PrevOutScript must be P2SH/)
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})
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it('throws if redeemScript is P2SH', function() {
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txb.addInput(prevTxHash, 0)
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var privScriptP2SH = scripts.scriptHashOutput(privScript.getHash())
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assert.throws(function() {
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txb.sign(0, privKey, privScriptP2SH)
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}, /RedeemScript can\'t be P2SH/)
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})
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it('throws if redeemScript not supported', function() {
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txb.addInput(prevTxHash, 0)
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assert.throws(function() {
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txb.sign(0, privKey, Script.EMPTY)
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}, /RedeemScript not supported \(nonstandard\)/)
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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 the correct transaction', function() {
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f.inputs.forEach(function(input) {
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var prevTx
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if (input.prevTx.length === 64) {
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prevTx = input.prevTx
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} else {
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prevTx = Transaction.fromHex(input.prevTx)
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}
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txb.addInput(prevTx, input.index)
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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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f.inputs.forEach(function(input, index) {
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var redeemScript
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if (input.redeemScript) {
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redeemScript = Script.fromASM(input.redeemScript)
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}
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input.privKeys.forEach(function(wif) {
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var privKey = ECKey.fromWIF(wif)
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txb.sign(index, privKey, redeemScript)
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})
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})
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var tx = txb.build()
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assert.equal(tx.getId(), f.txid)
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})
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})
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it('throws if Transaction has no inputs', function() {
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txb.addOutput(privScript, value)
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assert.throws(function() {
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txb.build()
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}, /Transaction has no inputs/)
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})
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it('throws if Transaction has no outputs', function() {
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txb.addInput(prevTxHash, 0)
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assert.throws(function() {
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txb.build()
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}, /Transaction has no outputs/)
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})
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it('throws if Transaction has no signatures', function() {
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txb.addInput(prevTxHash, 0)
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txb.addOutput(privScript, value)
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assert.throws(function() {
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txb.build()
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}, /Transaction is missing signatures/)
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})
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it('throws if Transaction has not enough signatures', function() {
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txb.addInput(prevTxHash, 0)
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txb.addInput(prevTxHash, 1)
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txb.addOutput(privScript, value)
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txb.sign(0, privKey)
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assert.throws(function() {
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txb.build()
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}, /Transaction is missing signatures/)
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})
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})
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})
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