diff --git a/README.md b/README.md
index afdda4d97..09fb0079c 100644
--- a/README.md
+++ b/README.md
@@ -90,6 +90,10 @@ You can also test with a continuously watching process, via `npm run watch`.
 
 You can run the linter by itself with `gulp lint`.
 
+#### Writing Browser Tests
+
+To write tests that will be run in the browser using QUnit, add your test files to `test/integration/lib`.
+
 ### Deploying the UI
 
  You must be authorized already on the MetaMask plugin.
diff --git a/app/scripts/lib/encryptor.js b/app/scripts/lib/encryptor.js
new file mode 100644
index 000000000..607825764
--- /dev/null
+++ b/app/scripts/lib/encryptor.js
@@ -0,0 +1,51 @@
+var vector = global.crypto.getRandomValues(new Uint8Array(16))
+var key = null
+
+module.exports = {
+  encrypt,
+  decrypt,
+  convertArrayBufferViewtoString,
+  keyFromPassword,
+}
+
+// Takes a Pojo, returns encrypted text.
+function encrypt (password, dataObj) {
+  var data = JSON.stringify(dataObj)
+  global.crypto.subtle.encrypt({name: 'AES-CBC', iv: vector}, key, convertStringToArrayBufferView(data)).then(function(result){
+    const encryptedData = new Uint8Array(result)
+    return encryptedData
+  },
+  function(e){
+    console.log(e.message)
+  })
+}
+
+// Takes encrypted text, returns the restored Pojo.
+function decrypt (password, text) {
+
+}
+
+function convertStringToArrayBufferView (str) {
+  var bytes = new Uint8Array(str.length)
+  for (var i = 0; i < str.length; i++) {
+    bytes[i] = str.charCodeAt(i)
+  }
+
+  return bytes
+}
+
+function convertArrayBufferViewtoString (buffer) {
+  var str = ''
+  for (var i = 0; i < buffer.byteLength; i++) {
+    str += String.fromCharCode(buffer[i])
+  }
+
+  return str
+}
+
+function keyFromPassword (password) {
+  global.crypto.subtle.digest({name: 'SHA-256'}, convertStringToArrayBufferView(password)).then(function(result){
+    return global.crypto.subtle.importKey('raw', result, {name: 'AES-CBC'}, false, ['encrypt', 'decrypt'])
+  })
+}
+
diff --git a/package.json b/package.json
index 273117f8a..a4f234735 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
     "lint": "gulp lint",
     "dev": "gulp dev",
     "dist": "gulp dist",
+    "buildCiUnits": "node test/integration/index.js",
     "test": "npm run fastTest && npm run ci && npm run lint",
     "fastTest": "mocha --require test/helper.js --compilers js:babel-register --recursive \"test/unit/**/*.js\"",
     "watch": "mocha watch --compilers js:babel-register --recursive \"test/unit/**/*.js\"",
@@ -15,7 +16,7 @@
     "mock": "beefy mock-dev.js:bundle.js --live --open --index=./development/index.html --cwd ./",
     "buildMock": "browserify ./mock-dev.js -o ./development/bundle.js",
     "testem": "npm run buildMock && testem",
-    "ci": "npm run buildMock && testem ci -P 2",
+    "ci": "npm run buildMock && npm run buildCiUnits && testem ci -P 2",
     "announce": "node development/announcer.js"
   },
   "browserify": {
diff --git a/test/integration/bundle.js b/test/integration/bundle.js
new file mode 100644
index 000000000..5058259b1
--- /dev/null
+++ b/test/integration/bundle.js
@@ -0,0 +1,103 @@
+window.QUnit = QUnit; (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})({1:[function(require,module,exports){
+(function (global){
+"use strict";
+
+var vector = global.crypto.getRandomValues(new Uint8Array(16));
+
+module.exports = {
+  encrypt: encrypt,
+  decrypt: decrypt
+};
+
+// Takes a Pojo, returns encrypted text.
+function encrypt(password, dataObj) {
+  var data = JSON.stringify(dataObj);
+  global.crypto.subtle.encrypt({ name: "AES-CBC", iv: vector }, key, convertStringToArrayBufferView(data)).then(function (result) {
+    var encryptedData = new Uint8Array(result);
+    return encryptedData;
+  }, function (e) {
+    console.log(e.message);
+  });
+}
+
+// Takes encrypted text, returns the restored Pojo.
+function decrypt(password, text) {}
+
+function convertStringToArrayBufferView(str) {
+  var bytes = new Uint8Array(str.length);
+  for (var i = 0; i < str.length; i++) {
+    bytes[i] = str.charCodeAt(i);
+  }
+
+  return bytes;
+}
+
+function convertArrayBufferViewtoString(buffer) {
+  var str = "";
+  for (var i = 0; i < buffer.byteLength; i++) {
+    str += String.fromCharCode(buffer[i]);
+  }
+
+  return str;
+}
+
+var password = "password";
+
+var key = null;
+
+function keyFromPassword(password) {
+  global.crypto.subtle.digest({ name: "SHA-256" }, convertStringToArrayBufferView(password)).then(function (result) {
+    return global.crypto.subtle.importKey("raw", result, { name: "AES-CBC" }, false, ["encrypt", "decrypt"]);
+  });
+}
+
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],2:[function(require,module,exports){
+'use strict';
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
+
+var encryptor = require('../../../app/scripts/lib/encryptor');
+
+QUnit.test('encryptor', function (assert) {
+  var password, data, encrypted;
+
+  password = 'a sample passw0rd';
+  data = { foo: 'data to encrypt' };
+
+  encryptor.encrypt(password, data).then(function (result) {
+    assert.equal(typeof result === 'undefined' ? 'undefined' : _typeof(result), 'string', 'returns a string');
+  }).catch(function (reason) {
+    assert.ifError(reason, 'threw an error');
+  });
+});
+
+},{"../../../app/scripts/lib/encryptor":1}],3:[function(require,module,exports){
+'use strict';
+
+QUnit.test('agree to terms', function (assert) {
+  var done = assert.async();
+
+  // Select the mock app root
+  var app = $('iframe').contents().find('#app-content .mock-app-root');
+
+  app.find('.markdown').prop('scrollTop', 100000000);
+
+  wait().then(function () {
+    app.find('button').click();
+  }).then(function () {
+    return wait();
+  }).then(function () {
+    var title = app.find('h1').text();
+    assert.equal(title, 'MetaMask', 'title screen');
+
+    var buttons = app.find('button');
+    assert.equal(buttons.length, 1, 'one button: create new vault');
+
+    done();
+  });
+
+  // Wait for view to transition:
+});
+
+},{}]},{},[2,3]);
diff --git a/test/integration/index.html b/test/integration/index.html
index 6de40b046..ad4b4eb14 100644
--- a/test/integration/index.html
+++ b/test/integration/index.html
@@ -12,7 +12,7 @@
   <script src="https://code.jquery.com/qunit/qunit-2.0.0.js"></script>
   <script src="./jquery-3.1.0.min.js"></script>
   <script src="helpers.js"></script>
-  <script src="tests.js"></script>
+  <script src="bundle.js"></script>
   <script src="/testem.js"></script>
 
   <iframe src="/development/index.html" height="500px" width="360px">
diff --git a/test/integration/index.js b/test/integration/index.js
new file mode 100644
index 000000000..ff6d1baf8
--- /dev/null
+++ b/test/integration/index.js
@@ -0,0 +1,21 @@
+var fs = require('fs')
+var path = require('path')
+var browserify = require('browserify');
+var tests = fs.readdirSync(path.join(__dirname, 'lib'))
+var bundlePath = path.join(__dirname, 'bundle.js')
+
+var b = browserify();
+
+// Remove old bundle
+try {
+  fs.unlinkSync(bundlePath)
+} catch (e) {}
+
+var writeStream = fs.createWriteStream(bundlePath)
+
+tests.forEach(function(fileName) {
+  b.add(path.join(__dirname, 'lib', fileName))
+})
+
+b.bundle().pipe(writeStream);
+
diff --git a/test/integration/lib/encryptor-test.js b/test/integration/lib/encryptor-test.js
new file mode 100644
index 000000000..21d6ee6f7
--- /dev/null
+++ b/test/integration/lib/encryptor-test.js
@@ -0,0 +1,17 @@
+var encryptor = require('../../../app/scripts/lib/encryptor')
+
+QUnit.test('encryptor', function(assert) {
+  var password, data, encrypted
+
+  password = 'a sample passw0rd'
+  data = { foo: 'data to encrypt' }
+
+  encryptor.encrypt(password, data)
+  .then(function(result) {
+    assert.equal(typeof result, 'string', 'returns a string')
+  })
+  .catch(function(reason) {
+    assert.ifError(reason, 'threw an error')
+  })
+
+})
diff --git a/test/integration/tests.js b/test/integration/lib/first-time.js
similarity index 88%
rename from test/integration/tests.js
rename to test/integration/lib/first-time.js
index 92111b05b..af9b94e24 100644
--- a/test/integration/tests.js
+++ b/test/integration/lib/first-time.js
@@ -15,10 +15,11 @@ QUnit.test('agree to terms', function (assert) {
     assert.equal(title, 'MetaMask', 'title screen')
 
     var buttons = app.find('button')
-    assert.equal(buttons.length, 2, 'two buttons: create and restore')
+    assert.equal(buttons.length, 1, 'one button: create new vault')
 
     done()
   })
 
   // Wait for view to transition:
 })
+