288 lines
8.6 KiB
JavaScript
288 lines
8.6 KiB
JavaScript
const { describe, it, beforeEach } = require('mocha')
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const assert = require('assert')
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const bscript = require('../src/script')
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const fixtures = require('./fixtures/transaction')
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const Transaction = require('..').Transaction
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describe('Transaction', function () {
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function fromRaw (raw, noWitness) {
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const tx = new Transaction()
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tx.version = raw.version
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tx.locktime = raw.locktime
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raw.ins.forEach(function (txIn, i) {
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const txHash = Buffer.from(txIn.hash, 'hex')
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let scriptSig
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if (txIn.data) {
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scriptSig = Buffer.from(txIn.data, 'hex')
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} else if (txIn.script) {
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scriptSig = bscript.fromASM(txIn.script)
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}
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tx.addInput(txHash, txIn.index, txIn.sequence, scriptSig)
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if (!noWitness && txIn.witness) {
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const witness = txIn.witness.map(function (x) {
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return Buffer.from(x, 'hex')
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})
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tx.setWitness(i, witness)
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}
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})
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raw.outs.forEach(function (txOut) {
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let script
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if (txOut.data) {
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script = Buffer.from(txOut.data, 'hex')
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} else if (txOut.script) {
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script = bscript.fromASM(txOut.script)
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}
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tx.addOutput(script, txOut.value)
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})
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return tx
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}
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describe('fromBuffer/fromHex', function () {
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function importExport (f) {
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const id = f.id || f.hash
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const txHex = f.hex || f.txHex
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it('imports ' + f.description + ' (' + id + ')', function () {
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const actual = Transaction.fromHex(txHex)
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assert.strictEqual(actual.toHex(), txHex)
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})
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if (f.whex) {
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it('imports ' + f.description + ' (' + id + ') as witness', function () {
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const actual = Transaction.fromHex(f.whex)
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assert.strictEqual(actual.toHex(), f.whex)
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})
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}
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}
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fixtures.valid.forEach(importExport)
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fixtures.hashForSignature.forEach(importExport)
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fixtures.hashForWitnessV0.forEach(importExport)
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fixtures.invalid.fromBuffer.forEach(function (f) {
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it('throws on ' + f.exception, function () {
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assert.throws(function () {
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Transaction.fromHex(f.hex)
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}, new RegExp(f.exception))
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})
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})
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it('.version should be interpreted as an int32le', function () {
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const txHex = 'ffffffff0000ffffffff'
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const tx = Transaction.fromHex(txHex)
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assert.equal(-1, tx.version)
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assert.equal(0xffffffff, tx.locktime)
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})
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})
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describe('toBuffer/toHex', function () {
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fixtures.valid.forEach(function (f) {
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it('exports ' + f.description + ' (' + f.id + ')', function () {
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const actual = fromRaw(f.raw, true)
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assert.strictEqual(actual.toHex(), f.hex)
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})
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if (f.whex) {
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it('exports ' + f.description + ' (' + f.id + ') as witness', function () {
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const wactual = fromRaw(f.raw)
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assert.strictEqual(wactual.toHex(), f.whex)
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})
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}
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})
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it('accepts target Buffer and offset parameters', function () {
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const f = fixtures.valid[0]
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const actual = fromRaw(f.raw)
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const byteLength = actual.byteLength()
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const target = Buffer.alloc(byteLength * 2)
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const a = actual.toBuffer(target, 0)
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const b = actual.toBuffer(target, byteLength)
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assert.strictEqual(a.length, byteLength)
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assert.strictEqual(b.length, byteLength)
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assert.strictEqual(a.toString('hex'), f.hex)
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assert.strictEqual(b.toString('hex'), f.hex)
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assert.deepEqual(a, b)
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assert.deepEqual(a, target.slice(0, byteLength))
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assert.deepEqual(b, target.slice(byteLength))
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})
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})
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describe('hasWitnesses', function () {
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fixtures.valid.forEach(function (f) {
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it('detects if the transaction has witnesses: ' + (f.whex ? 'true' : 'false'), function () {
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assert.strictEqual(Transaction.fromHex(f.whex ? f.whex : f.hex).hasWitnesses(), !!f.whex)
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})
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})
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})
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describe('weight/virtualSize', function () {
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it('computes virtual size', function () {
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fixtures.valid.forEach(function (f) {
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const transaction = Transaction.fromHex(f.whex ? f.whex : f.hex)
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assert.strictEqual(transaction.virtualSize(), f.virtualSize)
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})
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})
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it('computes weight', function () {
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fixtures.valid.forEach(function (f) {
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const transaction = Transaction.fromHex(f.whex ? f.whex : f.hex)
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assert.strictEqual(transaction.weight(), f.weight)
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})
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})
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})
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describe('addInput', function () {
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let prevTxHash
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beforeEach(function () {
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prevTxHash = Buffer.from('ffffffff00ffff000000000000000000000000000000000000000000101010ff', 'hex')
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})
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it('returns an index', function () {
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const tx = new Transaction()
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assert.strictEqual(tx.addInput(prevTxHash, 0), 0)
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assert.strictEqual(tx.addInput(prevTxHash, 0), 1)
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})
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it('defaults to empty script, witness and 0xffffffff SEQUENCE number', function () {
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const tx = new Transaction()
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tx.addInput(prevTxHash, 0)
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assert.strictEqual(tx.ins[0].script.length, 0)
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assert.strictEqual(tx.ins[0].witness.length, 0)
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assert.strictEqual(tx.ins[0].sequence, 0xffffffff)
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})
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fixtures.invalid.addInput.forEach(function (f) {
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it('throws on ' + f.exception, function () {
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const tx = new Transaction()
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const hash = Buffer.from(f.hash, 'hex')
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assert.throws(function () {
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tx.addInput(hash, f.index)
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}, new RegExp(f.exception))
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})
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})
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})
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describe('addOutput', function () {
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it('returns an index', function () {
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const tx = new Transaction()
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assert.strictEqual(tx.addOutput(Buffer.alloc(0), 0), 0)
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assert.strictEqual(tx.addOutput(Buffer.alloc(0), 0), 1)
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})
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})
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describe('clone', function () {
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fixtures.valid.forEach(function (f) {
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let actual
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let expected
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beforeEach(function () {
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expected = Transaction.fromHex(f.hex)
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actual = expected.clone()
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})
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it('should have value equality', function () {
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assert.deepEqual(actual, expected)
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})
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it('should not have reference equality', function () {
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assert.notEqual(actual, expected)
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})
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})
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})
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describe('getHash/getId', function () {
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function verify (f) {
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it('should return the id for ' + f.id + '(' + f.description + ')', function () {
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const tx = Transaction.fromHex(f.whex || f.hex)
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assert.strictEqual(tx.getHash().toString('hex'), f.hash)
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assert.strictEqual(tx.getId(), f.id)
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})
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}
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fixtures.valid.forEach(verify)
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})
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describe('isCoinbase', function () {
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function verify (f) {
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it('should return ' + f.coinbase + ' for ' + f.id + '(' + f.description + ')', function () {
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const tx = Transaction.fromHex(f.hex)
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assert.strictEqual(tx.isCoinbase(), f.coinbase)
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})
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}
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fixtures.valid.forEach(verify)
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})
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describe('hashForSignature', function () {
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it('does not use Witness serialization', function () {
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const randScript = Buffer.from('6a', 'hex')
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const tx = new Transaction()
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tx.addInput(Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex'), 0)
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tx.addOutput(randScript, 5000000000)
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const original = tx.__toBuffer
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tx.__toBuffer = function (a, b, c) {
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if (c !== false) throw new Error('hashForSignature MUST pass false')
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return original.call(this, a, b, c)
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}
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assert.throws(function () {
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tx.__toBuffer(undefined, undefined, true)
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}, /hashForSignature MUST pass false/)
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// assert hashForSignature does not pass false
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assert.doesNotThrow(function () {
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tx.hashForSignature(0, randScript, 1)
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})
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})
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fixtures.hashForSignature.forEach(function (f) {
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it('should return ' + f.hash + ' for ' + (f.description ? ('case "' + f.description + '"') : f.script), function () {
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const tx = Transaction.fromHex(f.txHex)
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const script = bscript.fromASM(f.script)
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assert.strictEqual(tx.hashForSignature(f.inIndex, script, f.type).toString('hex'), f.hash)
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})
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})
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})
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describe('hashForWitnessV0', function () {
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fixtures.hashForWitnessV0.forEach(function (f) {
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it('should return ' + f.hash + ' for ' + (f.description ? ('case "' + f.description + '"') : ''), function () {
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const tx = Transaction.fromHex(f.txHex)
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const script = bscript.fromASM(f.script)
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assert.strictEqual(tx.hashForWitnessV0(f.inIndex, script, f.value, f.type).toString('hex'), f.hash)
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})
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})
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})
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describe('setWitness', function () {
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it('only accepts a a witness stack (Array of Buffers)', function () {
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assert.throws(function () {
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(new Transaction()).setWitness(0, 'foobar')
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}, /Expected property "1" of type \[Buffer], got String "foobar"/)
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})
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})
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})
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