var assert = require('assert') var Address = require('../src/address') var ECKey = require('../src/eckey').ECKey var networks = require('..').networks var T = require('../src/transaction') var Transaction = T.Transaction var TransactionOut = T.TransactionOut var Script = require('../src/script') var fixtureTxes = require('./fixtures/mainnet_tx') var fixtureTx1Hex = fixtureTxes.prevTx var fixtureTx2Hex = fixtureTxes.tx var fixtureTxBigHex = fixtureTxes.bigTx function b2h(b) { return new Buffer(b).toString('hex') } function h2b(h) { return new Buffer(h, 'hex') } describe('Transaction', function() { describe('deserialize', function() { var tx, serializedTx beforeEach(function() { serializedTx = [ '0100000001344630cbff61fbc362f7e1ff2f11a344c29326e4ee96e78', '7dc0d4e5cc02fd069000000004a493046022100ef89701f460e8660c8', '0808a162bbf2d676f40a331a243592c36d6bd1f81d6bdf022100d29c0', '72f1b18e59caba6e1f0b8cadeb373fd33a25feded746832ec179880c2', '3901ffffffff0100f2052a010000001976a914dd40dedd8f7e3746662', '4c4dacc6362d8e7be23dd88ac00000000' ].join('') tx = Transaction.deserialize(serializedTx) }) it('returns the original after serialized again', function() { var actual = tx.serialize() var expected = serializedTx assert.equal(b2h(actual), expected) }) it('does not mutate the input buffer', function() { var buffer = new Buffer(serializedTx, 'hex') Transaction.deserialize(buffer) assert.equal(buffer.toString('hex'), serializedTx) }) it('decodes version correctly', function(){ assert.equal(tx.version, 1) }) it('decodes locktime correctly', function(){ assert.equal(tx.locktime, 0) }) it('decodes inputs correctly', function(){ assert.equal(tx.ins.length, 1) var input = tx.ins[0] assert.equal(input.sequence, 4294967295) assert.equal(input.outpoint.index, 0) assert.equal(input.outpoint.hash, "69d02fc05c4e0ddc87e796eee42693c244a3112fffe1f762c3fb61ffcb304634") assert.equal(b2h(input.script.buffer), "493046022100ef89701f460e8660c80808a162bbf2d676f40a331a243592c36d6bd1f81d6bdf022100d29c072f1b18e59caba6e1f0b8cadeb373fd33a25feded746832ec179880c23901") }) it('decodes outputs correctly', function(){ assert.equal(tx.outs.length, 1) var output = tx.outs[0] assert.equal(output.value, 5000000000) assert.deepEqual(output.script, Address.fromBase58Check('n1gqLjZbRH1biT5o4qiVMiNig8wcCPQeB9').toScriptPubKey()) }) it('assigns hash to deserialized object', function(){ var hashHex = "a9d4599e15b53f3eb531608ddb31f48c695c3d0b3538a6bda871e8b34f2f430c" assert.equal(tx.hash, hashHex) }) it('decodes large inputs correctly', function() { // transaction has only 1 input var tx = new Transaction() tx.addInput("0cb859105100ebc3344f749c835c7af7d7103ec0d8cbc3d8ccbd5d28c3c36b57", 0) tx.addOutput("15mMHKL96tWAUtqF3tbVf99Z8arcmnJrr3", 100) var buffer = tx.serialize() // we're going to replace the 8bit VarInt for tx.ins.length with a stretched 32bit equivalent var mutated = Buffer.concat([ buffer.slice(0, 4), new Buffer([254, 1, 0, 0, 0]), buffer.slice(5) ]) // the deserialized-serialized transaction should return to its non-mutated state (== tx) var buffer2 = Transaction.deserialize(mutated).serialize() assert.deepEqual(buffer, buffer2) }) }) describe('creating a transaction', function() { var tx, prevTx beforeEach(function() { prevTx = Transaction.deserialize(fixtureTx1Hex) tx = new Transaction() }) describe('addInput', function(){ it('allows a Transaction object to be passed in', function(){ tx.addInput(prevTx, 0) verifyTransactionIn() }) it('allows a Transaction hash to be passed in', function(){ tx.addInput("0cb859105100ebc3344f749c835c7af7d7103ec0d8cbc3d8ccbd5d28c3c36b57", 0) verifyTransactionIn() }) it('allows a TransactionIn object to be passed in', function(){ var txCopy = tx.clone() txCopy.addInput(prevTx, 0) var transactionIn = txCopy.ins[0] tx.addInput(transactionIn) verifyTransactionIn() }) it('allows a string in the form of txhash:index to be passed in', function(){ tx.addInput("0cb859105100ebc3344f749c835c7af7d7103ec0d8cbc3d8ccbd5d28c3c36b57:0") verifyTransactionIn() }) function verifyTransactionIn(){ assert.equal(tx.ins.length, 1) var input = tx.ins[0] assert.equal(input.sequence, 4294967295) assert.equal(input.outpoint.index, 0) assert.equal(input.outpoint.hash, "0cb859105100ebc3344f749c835c7af7d7103ec0d8cbc3d8ccbd5d28c3c36b57") assert.deepEqual(input.script.buffer, []) } }) describe('addOutput', function(){ it('allows an address and a value to be passed in', function(){ tx.addOutput("15mMHKL96tWAUtqF3tbVf99Z8arcmnJrr3", 40000) verifyTransactionOut() }) it('allows an Address object and value to be passed in', function(){ tx.addOutput(Address.fromBase58Check('15mMHKL96tWAUtqF3tbVf99Z8arcmnJrr3'), 40000) verifyTransactionOut() }) it('allows a string in the form of address:index to be passed in', function(){ tx.addOutput("15mMHKL96tWAUtqF3tbVf99Z8arcmnJrr3:40000") verifyTransactionOut() }) it('allows a TransactionOut object to be passed in', function(){ var txCopy = tx.clone() txCopy.addOutput("15mMHKL96tWAUtqF3tbVf99Z8arcmnJrr3:40000") var transactionOut = txCopy.outs[0] tx.addOutput(transactionOut) verifyTransactionOut() }) it('supports alternative networks', function(){ var addr = 'mkHJaNR7uuwRG1JrmTZsV4MszaTKjCBvCR' tx.addOutput(addr, 40000) verifyTransactionOut() assert.equal(tx.outs[0].address.toString(), addr) }) function verifyTransactionOut(){ assert.equal(tx.outs.length, 1) var output = tx.outs[0] assert.equal(output.value, 40000) assert.equal(b2h(output.script.buffer), "76a9143443bc45c560866cfeabf1d52f50a6ed358c69f288ac") } }) describe('sign', function(){ it('works', function(){ tx.addInput("0cb859105100ebc3344f749c835c7af7d7103ec0d8cbc3d8ccbd5d28c3c36b57:0") tx.addOutput("15mMHKL96tWAUtqF3tbVf99Z8arcmnJrr3:40000") tx.addOutput("1Bu3bhwRmevHLAy1JrRB6AfcxfgDG2vXRd:50000") var key = ECKey.fromWIF('L44f7zxJ5Zw4EK9HZtyAnzCYz2vcZ5wiJf9AuwhJakiV4xVkxBeb') tx.sign(0, key) var script = prevTx.outs[0].script var sig = tx.ins[0].script.chunks[0] assert.equal(tx.validateSig(0, script, key.pub, sig), true) }) }) describe('validateSig', function(){ var validTx beforeEach(function() { validTx = Transaction.deserialize(fixtureTx2Hex) }) it('returns true for valid signature', function(){ var key = ECKey.fromWIF('L44f7zxJ5Zw4EK9HZtyAnzCYz2vcZ5wiJf9AuwhJakiV4xVkxBeb') var script = prevTx.outs[0].script var sig = validTx.ins[0].script.chunks[0] assert.equal(validTx.validateSig(0, script, key.pub, sig), true) }) }) describe('estimateFee', function(){ it('works for fixture tx 1', function(){ var tx = Transaction.deserialize(fixtureTx1Hex) assert.equal(tx.estimateFee(), 20000) }) it('works for fixture big tx', function(){ var tx = Transaction.deserialize(fixtureTxBigHex) assert.equal(tx.estimateFee(), 60000) }) it('allow feePerKb to be passed in as an argument', function(){ var tx = Transaction.deserialize(fixtureTx2Hex) assert.equal(tx.estimateFee(10000), 10000) }) it('allow feePerKb to be set to 0', function(){ var tx = Transaction.deserialize(fixtureTx2Hex) assert.equal(tx.estimateFee(0), 0) }) }) }) describe('signScriptSig', function() { it('works for multi-sig redeem script', function() { var tx = new Transaction() tx.addInput('d6f72aab8ff86ff6289842a0424319bf2ddba85dc7c52757912297f948286389', 0) tx.addOutput('mrCDrCybB6J1vRfbwM5hemdJz73FwDBC8r', 1) var privKeys = [ '5HpHagT65TZzG1PH3CSu63k8DbpvD8s5ip4nEB3kEsreAnchuDf', '5HpHagT65TZzG1PH3CSu63k8DbpvD8s5ip4nEB3kEsreAvUcVfH' ].map(function(wif) { return ECKey.fromWIF(wif) }) var pubKeys = privKeys.map(function(eck) { return eck.pub }) var pubKeyBuffers = pubKeys.map(function(q) { return q.toBuffer() }) var redeemScript = Script.createMultisigScriptPubKey(2, pubKeyBuffers) var signatures = privKeys.map(function(privKey) { return tx.signScriptSig(0, redeemScript, privKey) }) var redeemScriptSig = Script.createMultisigScriptSig(signatures) var scriptSig = Script.createP2SHScriptSig(redeemScriptSig, redeemScript) tx.setScriptSig(0, scriptSig) signatures.forEach(function(sig, i){ assert(tx.validateSig(0, redeemScript, privKeys[i].pub, sig)) }) var expected = '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' assert.equal(tx.serializeHex(), expected) }) }) describe('TransactionOut', function() { }) })