ethereumjs-testrpc/perf/transactions.js

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#!/usr/bin/env node
var TestRPC = require("../");
var Web3 = require("web3");
var async = require("async")

var server = TestRPC.server();
var port = 12345;
var web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:" + port));

function runTest(times, fn, callback) {
  var start = new Date();

  async.timesSeries(times, fn, function(err) {
    if (err) return callback(err);

    var end = new Date();
    var actualTime = end.getTime() - start.getTime();

    callback(null, actualTime);
  });
}

function runAverage(title, number_of_runs, fn_times, fn, callback) {
  var results = new Array(number_of_runs);

  async.timesSeries(number_of_runs, function(n, next) {
    process.stdout.write(title + " " + (n + 1) + "...");

    runTest(fn_times, fn, function(err, totalTime) {
      if (err) return next(err);
      results[n] = totalTime;

      console.log((totalTime / 1000) + " seconds");
      next();
    });
  }, function(err) {
    if (err) return callback(err);

    var sum = results.reduce(function(a, b) {
      return a + b;
    }, 0);

    var average = sum / number_of_runs;

    console.log("Average " + (average / 1000) + " seconds");

    callback(null, average);
  });
};

function bailIfError(err) {
  if (err) {
    console.log(err);
    process.exit(1);
  }
}

server.listen(port, function(err) {
  bailIfError(err);

  web3.eth.getAccounts(function(err, accounts) {
    bailIfError(err);

    runAverage("Running transactions test", 4, 1000, function(n, cb) {
      web3.eth.sendTransaction({
        from: accounts[0],
        to: accounts[1],
        value: 500, // wei
        gas: 90000
      }, cb);
    }, function(err) {
      bailIfError(err);
      server.close();
    });
  });
});