var assert = require('assert') var ecdsa = require('../src/ecdsa') var scripts = require('../src/scripts') var Address = require('../src/address') var BigInteger = require('bigi') var ECKey = require('../src/eckey') var Script = require('../src/script') var Transaction = require('../src/transaction') var TransactionBuilder = require('../src/transaction_builder') var fixtures = require('./fixtures/transaction_builder') describe('TransactionBuilder', function() { var privAddress, privScript var prevTx, prevTxHash var privKey var txb beforeEach(function() { txb = new TransactionBuilder() prevTx = new Transaction() prevTx.addOutput('1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH', 0) prevTx.addOutput('1cMh228HTCiwS8ZsaakH8A8wze1JR5ZsP', 1) prevTxHash = prevTx.getHash() prevTxId = prevTx.getId() privKey = new ECKey(BigInteger.ONE, false) privAddress = privKey.pub.getAddress() privScript = privAddress.toOutputScript() value = 10000 }) describe('addInput', function() { it('accepts a txHash, index [and sequence number]', function() { var vin = txb.addInput(prevTxHash, 1, 54) assert.equal(vin, 0) var txin = txb.tx.ins[0] assert.equal(txin.hash, prevTxHash) assert.equal(txin.index, 1) assert.equal(txin.sequence, 54) assert.equal(txb.prevOutScripts[0], undefined) }) it('accepts a txHash, index [, sequence number and scriptPubKey]', function() { var vin = txb.addInput(prevTxHash, 1, 54, prevTx.outs[1].script) assert.equal(vin, 0) var txin = txb.tx.ins[0] assert.equal(txin.hash, prevTxHash) assert.equal(txin.index, 1) assert.equal(txin.sequence, 54) assert.equal(txb.prevOutScripts[0], prevTx.outs[1].script) }) it('accepts a prevTx, index [and sequence number]', function() { var vin = txb.addInput(prevTx, 1, 54) assert.equal(vin, 0) var txin = txb.tx.ins[0] assert.deepEqual(txin.hash, prevTxHash) assert.equal(txin.index, 1) assert.equal(txin.sequence, 54) assert.equal(txb.prevOutScripts[0], prevTx.outs[1].script) }) it('returns the input index', function() { assert.equal(txb.addInput(prevTxHash, 0), 0) assert.equal(txb.addInput(prevTxHash, 1), 1) }) it('throws if prevOutScript is not supported', function() { assert.throws(function() { txb.addInput(prevTxHash, 0, undefined, Script.EMPTY) }, /PrevOutScript not supported \(nonstandard\)/) }) it('throws if SIGHASH_ALL has been used to sign any existing scriptSigs', function() { txb.addInput(prevTxHash, 0) txb.sign(0, privKey) assert.throws(function() { txb.addInput(prevTxHash, 0) }, /No, this would invalidate signatures/) }) }) describe('addOutput', function() { it('throws if SIGHASH_ALL has been used to sign any existing scriptSigs', function() { txb.addInput(prevTxHash, 0) txb.addOutput(privScript, value) txb.sign(0, privKey) assert.throws(function() { txb.addOutput(privScript, 9000) }, /No, this would invalidate signatures/) }) }) describe('sign', function() { describe('when prevOutScript is undefined', function() { it('assumes pubKeyHash', function() { txb.addInput(prevTxHash, 0) txb.sign(0, privKey) assert.strictEqual(txb.signatures[0].redeemScript, undefined) assert.equal(txb.signatures[0].scriptType, 'pubkeyhash') }) }) it('throws if scriptType doesn\'t support multiple signatures', function() { txb.addInput(prevTxHash, 0) txb.sign(0, privKey) assert.throws(function() { txb.sign(0, privKey) }, /pubkeyhash doesn\'t support multiple signatures/) }) describe('when redeemScript is undefined', function() { it('throws if prevOutScript is P2SH', function() { var privScriptP2SH = scripts.scriptHashOutput(privScript.getHash()) txb.addInput(prevTxHash, 0, undefined, privScriptP2SH) assert.throws(function() { txb.sign(0, privKey) }, /PrevOutScript is P2SH, missing redeemScript/) }) }) describe('when redeemScript is defined', function() { it('assumes scriptHash', function() { txb.addInput(prevTxHash, 0) txb.sign(0, privKey, privScript) assert.equal(txb.signatures[0].redeemScript, privScript) }) it('throws if prevOutScript is not P2SH', function() { txb.addInput(prevTx, 0) assert.throws(function() { txb.sign(0, privKey, privScript) }, /PrevOutScript must be P2SH/) }) it('throws if redeemScript is P2SH', function() { txb.addInput(prevTxHash, 0) var privScriptP2SH = scripts.scriptHashOutput(privScript.getHash()) assert.throws(function() { txb.sign(0, privKey, privScriptP2SH) }, /RedeemScript can\'t be P2SH/) }) it('throws if redeemScript not supported', function() { txb.addInput(prevTxHash, 0) assert.throws(function() { txb.sign(0, privKey, Script.EMPTY) }, /RedeemScript not supported \(nonstandard\)/) }) }) }) describe('build', function() { fixtures.valid.build.forEach(function(f) { it('builds the correct transaction', function() { f.inputs.forEach(function(input) { var prevTxScript if (input.prevTxScript) { prevTxScript = Script.fromASM(input.prevTxScript) } txb.addInput(input.prevTx, input.index, input.sequence, prevTxScript) }) f.outputs.forEach(function(output) { var script = Script.fromASM(output.script) txb.addOutput(script, output.value) }) f.inputs.forEach(function(input, index) { var redeemScript if (input.redeemScript) { redeemScript = Script.fromASM(input.redeemScript) } input.privKeys.forEach(function(wif) { var privKey = ECKey.fromWIF(wif) txb.sign(index, privKey, redeemScript) }) }) var tx = txb.build() assert.equal(tx.getId(), f.txid) assert.equal(tx.toHex(), f.txhex) }) }) fixtures.invalid.build.forEach(function(f) { it('throws on ' + f.exception, function() { f.inputs.forEach(function(input) { var prevTxScript if (input.prevTxScript) { prevTxScript = Script.fromASM(input.prevTxScript) } txb.addInput(input.prevTx, input.index, input.sequence, prevTxScript) }) f.outputs.forEach(function(output) { var script = Script.fromASM(output.script) txb.addOutput(script, output.value) }) f.inputs.forEach(function(input, index) { var redeemScript if (input.redeemScript) { redeemScript = Script.fromASM(input.redeemScript) } input.privKeys.forEach(function(wif) { var privKey = ECKey.fromWIF(wif) txb.sign(index, privKey, redeemScript) }) }) assert.throws(function() { txb.build() }, new RegExp(f.exception)) }) }) }) describe('fromTransaction', function() { fixtures.valid.build.forEach(function(f) { it('builds the correct TransactionBuilder for ' + f.description, function() { var tx = Transaction.fromHex(f.txhex) var txb = TransactionBuilder.fromTransaction(tx) assert.equal(txb.build().toHex(), f.txhex) }) }) fixtures.invalid.fromTransaction.forEach(function(f,i) { it('throws on ' + f.exception, function() { var tx = Transaction.fromHex(f.hex) assert.throws(function() { TransactionBuilder.fromTransaction(tx) }, new RegExp(f.exception)) }) }) it('works for the P2SH multisig case', function() { var privKeys = [ "91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgwmaKkrx", "91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgww7vXtT" ].map(function(wif) { return ECKey.fromWIF(wif) }) var redeemScript = Script.fromASM("OP_2 0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8 04c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee51ae168fea63dc339a3c58419466ceaeef7f632653266d0e1236431a950cfe52a OP_2 OP_CHECKMULTISIG") txb.addInput("4971f016798a167331bcbc67248313fbc444c6e92e4416efd06964425588f5cf", 0) txb.addOutput("1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH", 10000) txb.sign(0, privKeys[0], redeemScript) var tx = txb.buildIncomplete() // in another galaxy... // ... far, far away var txb2 = TransactionBuilder.fromTransaction(tx) // [you should] verify that Transaction is what you want... // ... then sign it txb2.sign(0, privKeys[1], redeemScript) var tx2 = txb2.build() assert.equal(tx2.toHex(), '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') }) }) })