diff --git a/.travis.yml b/.travis.yml
index fafacbd5a..83b21d840 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,4 +8,6 @@ before_script:
 script:
    - "jshint *.js lib"
 after_script:
-  - npm run-script gulp
+  - npm run-script build
+  - npm test
+
diff --git a/dist/ethereum.js b/dist/ethereum.js
index 30684dbf4..e4a89450e 100644
--- a/dist/ethereum.js
+++ b/dist/ethereum.js
@@ -277,6 +277,7 @@ module.exports = {
     methodSignature: methodSignature
 };
 
+
 },{}],2:[function(require,module,exports){
 /*
     This file is part of ethereum.js.
diff --git a/dist/ethereum.js.map b/dist/ethereum.js.map
index db5f7342c..9b66ec4a5 100644
--- a/dist/ethereum.js.map
+++ b/dist/ethereum.js.map
@@ -12,12 +12,12 @@
     "index.js"
   ],
   "names": [],
-  "mappings": 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+  "mappings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tRA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;ACtGA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;ACt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   "file": "generated.js",
   "sourceRoot": "",
   "sourcesContent": [
     "(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})",
-    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file abi.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\n// TODO: make these be actually accurate instead of falling back onto JS's doubles.\nvar hexToDec = function (hex) {\n    return parseInt(hex, 16).toString();\n};\n\nvar decToHex = function (dec) {\n    return parseInt(dec).toString(16);\n};\n\nvar findIndex = function (array, callback) {\n    var end = false;\n    var i = 0;\n    for (; i < array.length && !end; i++) {\n        end = callback(array[i]);\n    }\n    return end ? i - 1 : -1;\n};\n\nvar findMethodIndex = function (json, methodName) {\n    return findIndex(json, function (method) {\n        return method.name === methodName;\n    });\n};\n\nvar padLeft = function (string, chars) {\n    return new Array(chars - string.length + 1).join(\"0\") + string;\n};\n\nvar calcBitPadding = function (type, expected) {\n    var value = type.slice(expected.length);\n    if (value === \"\") {\n        return 32;\n    }\n    return parseInt(value) / 8;\n};\n\nvar calcBytePadding = function (type, expected) {\n    var value = type.slice(expected.length);\n    if (value === \"\") {\n        return 32;\n    }\n    return parseInt(value);\n};\n\nvar calcRealPadding = function (type, expected) {\n    var value = type.slice(expected.length);\n    if (value === \"\") {\n        return 32;\n    }\n    var sizes = value.split('x');\n    for (var padding = 0, i = 0; i < sizes; i++) {\n        padding += (sizes[i] / 8);\n    }\n    return padding;\n};\n\nvar setupInputTypes = function () {\n    \n    var prefixedType = function (prefix, calcPadding) {\n        return function (type, value) {\n            var expected = prefix;\n            if (type.indexOf(expected) !== 0) {\n                return false;\n            }\n\n            var padding = calcPadding(type, expected);\n            if (typeof value === \"number\")\n                value = value.toString(16);\n            else if (typeof value === \"string\")\n                value = web3.toHex(value); \n            else if (value.indexOf('0x') === 0)\n                value = value.substr(2);\n            else\n                value = (+value).toString(16);\n            return padLeft(value, padding * 2);\n        };\n    };\n\n    var namedType = function (name, padding, formatter) {\n        return function (type, value) {\n            if (type !== name) {\n                return false;\n            }\n\n            return padLeft(formatter ? formatter(value) : value, padding * 2);\n        };\n    };\n\n    var formatBool = function (value) {\n        return value ? '0x1' : '0x0';\n    };\n\n    return [\n        prefixedType('uint', calcBitPadding),\n        prefixedType('int', calcBitPadding),\n        prefixedType('hash', calcBitPadding),\n        prefixedType('string', calcBytePadding),\n        prefixedType('real', calcRealPadding),\n        prefixedType('ureal', calcRealPadding),\n        namedType('address', 20),\n        namedType('bool', 1, formatBool),\n    ];\n};\n\nvar inputTypes = setupInputTypes();\n\nvar toAbiInput = function (json, methodName, params) {\n    var bytes = \"\";\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    var method = json[index];\n\n    for (var i = 0; i < method.inputs.length; i++) {\n        var found = false;\n        for (var j = 0; j < inputTypes.length && !found; j++) {\n            found = inputTypes[j](method.inputs[i].type, params[i]);\n        }\n        if (!found) {\n            console.error('unsupported json type: ' + method.inputs[i].type);\n        }\n        bytes += found;\n    }\n    return bytes;\n};\n\nvar setupOutputTypes = function () {\n\n    var prefixedType = function (prefix, calcPadding) {\n        return function (type) {\n            var expected = prefix;\n            if (type.indexOf(expected) !== 0) {\n                return -1;\n            }\n\n            var padding = calcPadding(type, expected);\n            return padding * 2;\n        };\n    };\n\n    var namedType = function (name, padding) {\n        return function (type) {\n            return name === type ? padding * 2 : -1;\n        };\n    };\n\n    var formatInt = function (value) {\n        return value.length <= 8 ? +parseInt(value, 16) : hexToDec(value);\n    };\n\n    var formatHash = function (value) {\n        return \"0x\" + value;\n    };\n\n    var formatBool = function (value) {\n        return value === '1' ? true : false;\n    };\n\n    var formatString = function (value) {\n        return web3.toAscii(value);\n    };\n\n    return [\n    { padding: prefixedType('uint', calcBitPadding), format: formatInt },\n    { padding: prefixedType('int', calcBitPadding), format: formatInt },\n    { padding: prefixedType('hash', calcBitPadding), format: formatHash },\n    { padding: prefixedType('string', calcBytePadding), format: formatString },\n    { padding: prefixedType('real', calcRealPadding), format: formatInt },\n    { padding: prefixedType('ureal', calcRealPadding), format: formatInt },\n    { padding: namedType('address', 20) },\n    { padding: namedType('bool', 1), format: formatBool }\n    ];\n};\n\nvar outputTypes = setupOutputTypes();\n\nvar fromAbiOutput = function (json, methodName, output) {\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    output = output.slice(2);\n\n    var result = [];\n    var method = json[index];\n    for (var i = 0; i < method.outputs.length; i++) {\n        var padding = -1;\n        for (var j = 0; j < outputTypes.length && padding === -1; j++) {\n            padding = outputTypes[j].padding(method.outputs[i].type);\n        }\n\n        if (padding === -1) {\n            // not found output parsing\n            continue;\n        }\n        var res = output.slice(0, padding);\n        var formatter = outputTypes[j - 1].format;\n        result.push(formatter ? formatter(res) : (\"0x\" + res));\n        output = output.slice(padding);\n    }\n\n    return result;\n};\n\nvar inputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        parser[method.name] = function () {\n            var params = Array.prototype.slice.call(arguments);\n            return toAbiInput(json, method.name, params);\n        };\n    });\n\n    return parser;\n};\n\nvar outputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        parser[method.name] = function (output) {\n            return fromAbiOutput(json, method.name, output);\n        };\n    });\n\n    return parser;\n};\n\nvar methodSignature = function (json, name) {\n    var method = json[findMethodIndex(json, name)];\n    var result = name + '(';\n    var inputTypes = method.inputs.map(function (inp) {\n        return inp.type;\n    });\n    result += inputTypes.join(',');\n    result += ')';\n\n    return web3.sha3(web3.fromAscii(result));\n};\n\nmodule.exports = {\n    inputParser: inputParser,\n    outputParser: outputParser,\n    methodSignature: methodSignature\n};\n",
+    "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file abi.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Gav Wood <g@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\n// TODO: make these be actually accurate instead of falling back onto JS's doubles.\nvar hexToDec = function (hex) {\n    return parseInt(hex, 16).toString();\n};\n\nvar decToHex = function (dec) {\n    return parseInt(dec).toString(16);\n};\n\nvar findIndex = function (array, callback) {\n    var end = false;\n    var i = 0;\n    for (; i < array.length && !end; i++) {\n        end = callback(array[i]);\n    }\n    return end ? i - 1 : -1;\n};\n\nvar findMethodIndex = function (json, methodName) {\n    return findIndex(json, function (method) {\n        return method.name === methodName;\n    });\n};\n\nvar padLeft = function (string, chars) {\n    return new Array(chars - string.length + 1).join(\"0\") + string;\n};\n\nvar calcBitPadding = function (type, expected) {\n    var value = type.slice(expected.length);\n    if (value === \"\") {\n        return 32;\n    }\n    return parseInt(value) / 8;\n};\n\nvar calcBytePadding = function (type, expected) {\n    var value = type.slice(expected.length);\n    if (value === \"\") {\n        return 32;\n    }\n    return parseInt(value);\n};\n\nvar calcRealPadding = function (type, expected) {\n    var value = type.slice(expected.length);\n    if (value === \"\") {\n        return 32;\n    }\n    var sizes = value.split('x');\n    for (var padding = 0, i = 0; i < sizes; i++) {\n        padding += (sizes[i] / 8);\n    }\n    return padding;\n};\n\nvar setupInputTypes = function () {\n    \n    var prefixedType = function (prefix, calcPadding) {\n        return function (type, value) {\n            var expected = prefix;\n            if (type.indexOf(expected) !== 0) {\n                return false;\n            }\n\n            var padding = calcPadding(type, expected);\n            if (typeof value === \"number\")\n                value = value.toString(16);\n            else if (typeof value === \"string\")\n                value = web3.toHex(value); \n            else if (value.indexOf('0x') === 0)\n                value = value.substr(2);\n            else\n                value = (+value).toString(16);\n            return padLeft(value, padding * 2);\n        };\n    };\n\n    var namedType = function (name, padding, formatter) {\n        return function (type, value) {\n            if (type !== name) {\n                return false;\n            }\n\n            return padLeft(formatter ? formatter(value) : value, padding * 2);\n        };\n    };\n\n    var formatBool = function (value) {\n        return value ? '0x1' : '0x0';\n    };\n\n    return [\n        prefixedType('uint', calcBitPadding),\n        prefixedType('int', calcBitPadding),\n        prefixedType('hash', calcBitPadding),\n        prefixedType('string', calcBytePadding),\n        prefixedType('real', calcRealPadding),\n        prefixedType('ureal', calcRealPadding),\n        namedType('address', 20),\n        namedType('bool', 1, formatBool),\n    ];\n};\n\nvar inputTypes = setupInputTypes();\n\nvar toAbiInput = function (json, methodName, params) {\n    var bytes = \"\";\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    var method = json[index];\n\n    for (var i = 0; i < method.inputs.length; i++) {\n        var found = false;\n        for (var j = 0; j < inputTypes.length && !found; j++) {\n            found = inputTypes[j](method.inputs[i].type, params[i]);\n        }\n        if (!found) {\n            console.error('unsupported json type: ' + method.inputs[i].type);\n        }\n        bytes += found;\n    }\n    return bytes;\n};\n\nvar setupOutputTypes = function () {\n\n    var prefixedType = function (prefix, calcPadding) {\n        return function (type) {\n            var expected = prefix;\n            if (type.indexOf(expected) !== 0) {\n                return -1;\n            }\n\n            var padding = calcPadding(type, expected);\n            return padding * 2;\n        };\n    };\n\n    var namedType = function (name, padding) {\n        return function (type) {\n            return name === type ? padding * 2 : -1;\n        };\n    };\n\n    var formatInt = function (value) {\n        return value.length <= 8 ? +parseInt(value, 16) : hexToDec(value);\n    };\n\n    var formatHash = function (value) {\n        return \"0x\" + value;\n    };\n\n    var formatBool = function (value) {\n        return value === '1' ? true : false;\n    };\n\n    var formatString = function (value) {\n        return web3.toAscii(value);\n    };\n\n    return [\n    { padding: prefixedType('uint', calcBitPadding), format: formatInt },\n    { padding: prefixedType('int', calcBitPadding), format: formatInt },\n    { padding: prefixedType('hash', calcBitPadding), format: formatHash },\n    { padding: prefixedType('string', calcBytePadding), format: formatString },\n    { padding: prefixedType('real', calcRealPadding), format: formatInt },\n    { padding: prefixedType('ureal', calcRealPadding), format: formatInt },\n    { padding: namedType('address', 20) },\n    { padding: namedType('bool', 1), format: formatBool }\n    ];\n};\n\nvar outputTypes = setupOutputTypes();\n\nvar fromAbiOutput = function (json, methodName, output) {\n    var index = findMethodIndex(json, methodName);\n\n    if (index === -1) {\n        return;\n    }\n\n    output = output.slice(2);\n\n    var result = [];\n    var method = json[index];\n    for (var i = 0; i < method.outputs.length; i++) {\n        var padding = -1;\n        for (var j = 0; j < outputTypes.length && padding === -1; j++) {\n            padding = outputTypes[j].padding(method.outputs[i].type);\n        }\n\n        if (padding === -1) {\n            // not found output parsing\n            continue;\n        }\n        var res = output.slice(0, padding);\n        var formatter = outputTypes[j - 1].format;\n        result.push(formatter ? formatter(res) : (\"0x\" + res));\n        output = output.slice(padding);\n    }\n\n    return result;\n};\n\nvar inputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        parser[method.name] = function () {\n            var params = Array.prototype.slice.call(arguments);\n            return toAbiInput(json, method.name, params);\n        };\n    });\n\n    return parser;\n};\n\nvar outputParser = function (json) {\n    var parser = {};\n    json.forEach(function (method) {\n        parser[method.name] = function (output) {\n            return fromAbiOutput(json, method.name, output);\n        };\n    });\n\n    return parser;\n};\n\nvar methodSignature = function (json, name) {\n    var method = json[findMethodIndex(json, name)];\n    var result = name + '(';\n    var inputTypes = method.inputs.map(function (inp) {\n        return inp.type;\n    });\n    result += inputTypes.join(',');\n    result += ')';\n\n    return web3.sha3(web3.fromAscii(result));\n};\n\nmodule.exports = {\n    inputParser: inputParser,\n    outputParser: outputParser,\n    methodSignature: methodSignature\n};\n\n",
     "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file autoprovider.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n/*\n * @brief if qt object is available, uses QtProvider,\n * if not tries to connect over websockets\n * if it fails, it uses HttpRpcProvider\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var WebSocket = require('ws'); // jshint ignore:line\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\nvar AutoProvider = function (userOptions) {\n    if (web3.haveProvider()) {\n        return;\n    }\n\n    // before we determine what provider we are, we have to cache request\n    this.sendQueue = [];\n    this.onmessageQueue = [];\n\n    if (navigator.qt) {\n        this.provider = new web3.providers.QtProvider();\n        return;\n    }\n\n    userOptions = userOptions || {};\n    var options = {\n        httprpc: userOptions.httprpc || 'http://localhost:8080',\n        websockets: userOptions.websockets || 'ws://localhost:40404/eth'\n    };\n\n    var self = this;\n    var closeWithSuccess = function (success) {\n        ws.close();\n        if (success) {\n            self.provider = new web3.providers.WebSocketProvider(options.websockets);\n        } else {\n            self.provider = new web3.providers.HttpRpcProvider(options.httprpc);\n            self.poll = self.provider.poll.bind(self.provider);\n        }\n        self.sendQueue.forEach(function (payload) {\n            self.provider(payload);\n        });\n        self.onmessageQueue.forEach(function (handler) {\n            self.provider.onmessage = handler;\n        });\n    };\n\n    var ws = new WebSocket(options.websockets);\n\n    ws.onopen = function() {\n        closeWithSuccess(true);\n    };\n\n    ws.onerror = function() {\n        closeWithSuccess(false);\n    };\n};\n\nAutoProvider.prototype.send = function (payload) {\n    if (this.provider) {\n        this.provider.send(payload);\n        return;\n    }\n    this.sendQueue.push(payload);\n};\n\nObject.defineProperty(AutoProvider.prototype, 'onmessage', {\n    set: function (handler) {\n        if (this.provider) {\n            this.provider.onmessage = handler;\n            return;\n        }\n        this.onmessageQueue.push(handler);\n    }\n});\n\nmodule.exports = AutoProvider;\n",
     "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file contract.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var web3 = require('./web3'); // jshint ignore:line\n*/}\n\nvar abi = require('./abi');\n\n// method signature length in bytes\nvar ETH_METHOD_SIGNATURE_LENGTH = 4;\n\nvar contract = function (address, desc) {\n    var inputParser = abi.inputParser(desc);\n    var outputParser = abi.outputParser(desc);\n\n    var contract = {};\n\n    desc.forEach(function (method) {\n        contract[method.name] = function () {\n            var params = Array.prototype.slice.call(arguments);\n            var parsed = inputParser[method.name].apply(null, params);\n\n            var onSuccess = function (result) {\n                return outputParser[method.name](result);\n            };\n\n            return {\n                call: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    return abi.methodSignature(desc, method.name).then(function (signature) {\n                        extra.data = signature.slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2) + parsed;\n                        return web3.eth.call(extra).then(onSuccess);\n                    });\n                },\n                transact: function (extra) {\n                    extra = extra || {};\n                    extra.to = address;\n                    extra.data = parsed;\n                    return web3.eth.transact(extra).then(onSuccess);\n                }\n            };\n        };\n    });\n\n    return contract;\n};\n\nmodule.exports = contract;\n",
     "/*\n    This file is part of ethereum.js.\n\n    ethereum.js is free software: you can redistribute it and/or modify\n    it under the terms of the GNU Lesser General Public License as published by\n    the Free Software Foundation, either version 3 of the License, or\n    (at your option) any later version.\n\n    ethereum.js is distributed in the hope that it will be useful,\n    but WITHOUT ANY WARRANTY; without even the implied warranty of\n    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n    GNU Lesser General Public License for more details.\n\n    You should have received a copy of the GNU Lesser General Public License\n    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.\n*/\n/** @file httprpc.js\n * @authors:\n *   Marek Kotewicz <marek@ethdev.com>\n *   Marian Oancea <marian@ethdev.com>\n * @date 2014\n */\n\n// TODO: is these line is supposed to be here? \nif (\"build\" !== 'build') {/*\n    var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line\n*/}\n\nvar HttpRpcProvider = function (host) {\n    this.handlers = [];\n    this.host = host;\n};\n\nfunction formatJsonRpcObject(object) {\n    return {\n        jsonrpc: '2.0',\n        method: object.call,\n        params: object.args,\n        id: object._id\n    };\n}\n\nfunction formatJsonRpcMessage(message) {\n    var object = JSON.parse(message);\n\n    return {\n        _id: object.id,\n        data: object.result,\n        error: object.error\n    };\n}\n\nHttpRpcProvider.prototype.sendRequest = function (payload, cb) {\n    var data = formatJsonRpcObject(payload);\n\n    var request = new XMLHttpRequest();\n    request.open(\"POST\", this.host, true);\n    request.send(JSON.stringify(data));\n    request.onreadystatechange = function () {\n        if (request.readyState === 4 && cb) {\n            cb(request);\n        }\n    };\n};\n\nHttpRpcProvider.prototype.send = function (payload) {\n    var self = this;\n    this.sendRequest(payload, function (request) {\n        self.handlers.forEach(function (handler) {\n            handler.call(self, formatJsonRpcMessage(request.responseText));\n        });\n    });\n};\n\nHttpRpcProvider.prototype.poll = function (payload, id) {\n    var self = this;\n    this.sendRequest(payload, function (request) {\n        var parsed = JSON.parse(request.responseText);\n        if (parsed.error || (parsed.result instanceof Array ? parsed.result.length === 0 : !parsed.result)) {\n            return;\n        }\n        self.handlers.forEach(function (handler) {\n            handler.call(self, {_event: payload.call, _id: id, data: parsed.result});\n        });\n    });\n};\n\nObject.defineProperty(HttpRpcProvider.prototype, \"onmessage\", {\n    set: function (handler) {\n        this.handlers.push(handler);\n    }\n});\n\nmodule.exports = HttpRpcProvider;\n",
diff --git a/package.json b/package.json
index 6d032d72d..b4f180d10 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,8 @@
   "scripts": {
     "build": "gulp",
     "watch": "gulp watch",
-    "lint": "gulp lint"
+    "lint": "gulp lint",
+    "test": "mocha"
   },
   "repository": {
     "type": "git",