runblockTest.js

var async = require('async')
var VM = require('ethereumjs-vm')
var utils = require('ethereumjs-util')
var Block = require('ethereumjs-block')
var Account = require('ethereumjs-account')
var Tx = require('ethereumjs-tx')
var rlp = utils.rlp

var accountAddress = 'cd2a3d9f938e13cd947ec05abc7fe734df8dd826'
var accountKey = 'cow'

var vm, account

async.series([
  createVM,
  //watchLog,
  createAccount.bind(null, accountAddress),
  sendTx,
  printVM
], function(err) {
  if (err) console.error(err)
  else console.log('done!')
})

function createVM(cb) {
  vm = new VM()
  cb(null)
}

function createAccount(address, cb) {
  account = new Account()
  account.balance = 'f00000000000000001'
  vm.trie.put(new Buffer(address, 'hex'), account.serialize(), cb)
}

function sendTx(cb) {
  var tx = new Tx()
  tx.to = new Buffer('cd2a3d9f938e13cd947ec05abc7fe734df8dd825', 'hex')
  tx.value = 1000000
  tx.sign(new Buffer(utils.sha3(accountKey), 'hex'))
  var block = new Block({
    header: {
      coinbase: new Buffer(accountAddress, 'hex'),
      gasLimit: 1000000000,
      number: 0,
      timestamp: new Buffer(pad(Date.now().toString(16)), 'hex')
    },
    transactions: [ tx.serialize() ],
    uncleHeaders: []
  })
  vm.runBlock({ block: block, generate: true }, cb)
}

function printVM(cb) {
  var stream = vm.trie.createReadStream()
  stream.on('data', function(data) {
    var account = new Account(data.value)
    account.getCode(vm.trie, function(err, code) {
      console.log(data.key.toString('hex') + ' => ' + code.toString('hex'))
      readStorage(account)
    })
    function readStorage(raw) {
      if (raw.stateRoot.toString('hex') === this.SHA3_RLP_NULL) return
      
      var strie = vm.trie.copy()
      strie.root = raw.stateRoot
      var stream = strie.createReadStream()
      stream.on('data', function(data) {
        console.log(data.key.toString('hex') + ' ==> ' + rlp.decode(data.value).toString('hex'))
      })
    }
  })
}

function watchLog(vm, cb) {
    vm.logReadStream().on('data', function(data) {
        console.log(data)
    })
    cb(null, vm)
}


function pad(str) {
  return str.length % 2 === 0 ? str : '0' + str
}