diff --git a/package.json b/package.json
index 09cc9f23..f5dc2941 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
   },
   "scripts": {
     "test": "./node_modules/.bin/mocha --compilers ts:ts-node/register --recursive test/unitary",
+    "test-dbg": "./node_modules/.bin/mocha --debug-brk --compilers ts:ts-node/register --recursive test/unitary",
     "int-test": "./node_modules/.bin/mocha --recursive test/integration",
     "coverage": "./node_modules/.bin/istanbul cover _mocha -- -R spec --recursive test",
     "build-ts": "tsc",
diff --git a/src/lib/AuthenticationRegulator.ts b/src/lib/AuthenticationRegulator.ts
index 16bd4340..e55d860a 100644
--- a/src/lib/AuthenticationRegulator.ts
+++ b/src/lib/AuthenticationRegulator.ts
@@ -10,7 +10,7 @@ interface DatedDocument {
   date: Date;
 }
 
-export class AuthenticationRegulator {
+export default class AuthenticationRegulator {
   private _user_data_store: any;
   private _lock_time_in_seconds: number;
 
diff --git a/src/lib/Dependencies.ts b/src/lib/Dependencies.ts
deleted file mode 100644
index 0cfa344f..00000000
--- a/src/lib/Dependencies.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-import * as winston from "winston";
-import nodemailer = require("nodemailer");
-
-export interface Nodemailer {
-    createTransport: (options?: any, defaults?: Object) => nodemailer.Transporter;
-}
-
-export interface GlobalDependencies {
-    u2f: object;
-    nodemailer: Nodemailer;
-    ldapjs: object;
-    session: any;
-    winston: winston.Winston;
-    speakeasy: object;
-    nedb: any;
-}
-
-export type NodemailerDependencies = Nodemailer;
-
-export interface NotifierDependencies {
-    nodemailer: Nodemailer;
-}
\ No newline at end of file
diff --git a/src/lib/Server.ts b/src/lib/Server.ts
index d10e2bbe..34d38056 100644
--- a/src/lib/Server.ts
+++ b/src/lib/Server.ts
@@ -1,10 +1,12 @@
 
 import { UserConfiguration } from "./Configuration";
-import { GlobalDependencies } from "./Dependencies";
-import { AuthenticationRegulator } from "./AuthenticationRegulator";
+import { GlobalDependencies } from "../types/Dependencies";
+import AuthenticationRegulator from "./AuthenticationRegulator";
 import UserDataStore from "./UserDataStore";
 import ConfigurationAdapter from "./ConfigurationAdapter";
 import { NotifierFactory } from "./notifiers/NotifierFactory";
+import TOTPValidator from "./TOTPValidator";
+import TOTPGenerator from "./TOTPGenerator";
 
 import * as Express from "express";
 import * as BodyParser from "body-parser";
@@ -58,10 +60,13 @@ export default class Server {
     const notifier = NotifierFactory.build(config.notifier, deps);
     const ldap = new Ldap(deps, config.ldap);
     const accessController = new AccessController(config.access_control, deps.winston);
+    const totpValidator = new TOTPValidator(deps.speakeasy);
+    const totpGenerator = new TOTPGenerator(deps.speakeasy);
 
     app.set("logger", deps.winston);
     app.set("ldap", ldap);
-    app.set("totp engine", deps.speakeasy);
+    app.set("totp validator", totpValidator);
+    app.set("totp generator", totpGenerator);
     app.set("u2f", deps.u2f);
     app.set("user data store", data_store);
     app.set("notifier", notifier);
diff --git a/src/lib/TOTPGenerator.ts b/src/lib/TOTPGenerator.ts
new file mode 100644
index 00000000..2b1555b6
--- /dev/null
+++ b/src/lib/TOTPGenerator.ts
@@ -0,0 +1,16 @@
+
+import * as speakeasy from "speakeasy";
+import { Speakeasy } from "../types/Dependencies";
+import BluebirdPromise = require("bluebird");
+
+export default class TOTPGenerator {
+  private speakeasy: Speakeasy;
+
+  constructor(speakeasy: Speakeasy) {
+    this.speakeasy = speakeasy;
+  }
+
+  generate(options: speakeasy.GenerateOptions): speakeasy.Key {
+    return this.speakeasy.generateSecret(options);
+  }
+}
\ No newline at end of file
diff --git a/src/lib/TOTPValidator.ts b/src/lib/TOTPValidator.ts
new file mode 100644
index 00000000..2b009884
--- /dev/null
+++ b/src/lib/TOTPValidator.ts
@@ -0,0 +1,23 @@
+
+import { Speakeasy } from "../types/Dependencies";
+import BluebirdPromise = require("bluebird");
+
+const TOTP_ENCODING = "base32";
+
+export default class TOTPValidator {
+  private speakeasy: Speakeasy;
+
+  constructor(speakeasy: Speakeasy) {
+    this.speakeasy = speakeasy;
+  }
+
+  validate(token: string, secret: string): BluebirdPromise<void> {
+    const real_token = this.speakeasy.totp({
+      secret: secret,
+      encoding: TOTP_ENCODING
+    });
+
+    if (token == real_token) return BluebirdPromise.resolve();
+    return BluebirdPromise.reject("Wrong challenge");
+  }
+}
\ No newline at end of file
diff --git a/src/lib/UserDataStore.ts b/src/lib/UserDataStore.ts
index 4aa6a05e..e3cda5ad 100644
--- a/src/lib/UserDataStore.ts
+++ b/src/lib/UserDataStore.ts
@@ -2,7 +2,7 @@ import * as Promise from "bluebird";
 import * as path from "path";
 import Nedb = require("nedb");
 import { NedbAsync } from "nedb";
-import { TOTPSecret } from "./TOTPSecret";
+import { TOTPSecret } from "../types/TOTPSecret";
 
 // Constants
 
diff --git a/src/lib/notifiers/GMailNotifier.ts b/src/lib/notifiers/GMailNotifier.ts
index 030cd85d..949ecf0c 100644
--- a/src/lib/notifiers/GMailNotifier.ts
+++ b/src/lib/notifiers/GMailNotifier.ts
@@ -4,7 +4,7 @@ import * as fs from "fs";
 import * as ejs from "ejs";
 import nodemailer = require("nodemailer");
 
-import { NodemailerDependencies } from "../Dependencies";
+import { NodemailerDependencies } from "../../types/Dependencies";
 import { Identity } from "../Identity";
 import { INotifier } from "../notifiers/INotifier";
 import { GmailNotifierConfiguration } from "../Configuration";
diff --git a/src/lib/notifiers/NotifierFactory.ts b/src/lib/notifiers/NotifierFactory.ts
index fe166c72..96f631f6 100644
--- a/src/lib/notifiers/NotifierFactory.ts
+++ b/src/lib/notifiers/NotifierFactory.ts
@@ -1,6 +1,6 @@
 
 import { NotifierConfiguration } from "..//Configuration";
-import { NotifierDependencies } from "../Dependencies";
+import { NotifierDependencies } from "../../types/Dependencies";
 import { INotifier } from "./INotifier";
 
 import { GMailNotifier } from "./GMailNotifier";
diff --git a/src/lib/routes/totp.js b/src/lib/routes/totp.js
index b5a00e23..9fdfb93a 100644
--- a/src/lib/routes/totp.js
+++ b/src/lib/routes/totp.js
@@ -1,7 +1,6 @@
 
 module.exports = totp_fn;
 
-var totp = require('../totp');
 var objectPath = require('object-path');
 var exceptions = require('../../../src/lib/exceptions');
 
@@ -20,14 +19,14 @@ function totp_fn(req, res) {
   }
 
   var token = req.body.token;
-  var totp_engine = req.app.get('totp engine');
+  var totpValidator = req.app.get('totp validator');
   var data_store = req.app.get('user data store');  
 
   logger.debug('POST 2ndfactor totp: Fetching secret for user %s', userid);
   data_store.get_totp_secret(userid)
   .then(function(doc) {
     logger.debug('POST 2ndfactor totp: TOTP secret is %s', JSON.stringify(doc));
-    return totp.validate(totp_engine, token, doc.secret.base32)
+    return totpValidator.validate(token, doc.secret.base32);
   })
   .then(function() {
     logger.debug('POST 2ndfactor totp: TOTP validation succeeded');
diff --git a/src/lib/routes/totp_register.js b/src/lib/routes/totp_register.js
index 4ca2094f..37c7e7ce 100644
--- a/src/lib/routes/totp_register.js
+++ b/src/lib/routes/totp_register.js
@@ -47,8 +47,8 @@ function post(req, res) {
   }
 
   var user_data_store = req.app.get('user data store');
-  var totp = req.app.get('totp engine');
-  var secret = totp.generateSecret();
+  var totpGenerator = req.app.get('totp generator');
+  var secret = totpGenerator.generate();
 
   logger.debug('POST new-totp-secret: save the TOTP secret in DB');
   user_data_store.set_totp_secret(userid, secret)
diff --git a/src/lib/totp.js b/src/lib/totp.js
deleted file mode 100644
index 7d3c194e..00000000
--- a/src/lib/totp.js
+++ /dev/null
@@ -1,22 +0,0 @@
-
-module.exports = {
-  'validate': validate 
-}
-
-var Promise = require('bluebird');
-
-function validate(totp_engine, token, totp_secret) {
-  return new Promise(function(resolve, reject) {
-    var real_token = totp_engine.totp({
-      secret: totp_secret,
-      encoding: 'base32'
-    });
-
-    if(token == real_token) {
-      resolve();
-    }
-    else {
-      reject('Wrong challenge');
-    }
-  });
-}
diff --git a/src/types/Dependencies.ts b/src/types/Dependencies.ts
new file mode 100644
index 00000000..9d7de366
--- /dev/null
+++ b/src/types/Dependencies.ts
@@ -0,0 +1,27 @@
+import * as winston from "winston";
+import * as speakeasy from "speakeasy";
+import nodemailer = require("nodemailer");
+import session = require("express-session");
+import nedb = require("nedb");
+
+export type Nodemailer = typeof nodemailer;
+export type Speakeasy = typeof speakeasy;
+export type Winston = typeof winston;
+export type Session = typeof session;
+export type Nedb = typeof nedb;
+
+export interface GlobalDependencies {
+    u2f: object;
+    nodemailer: Nodemailer;
+    ldapjs: object;
+    session: Session;
+    winston: Winston;
+    speakeasy: Speakeasy;
+    nedb: Nedb;
+}
+
+export type NodemailerDependencies = Nodemailer;
+
+export interface NotifierDependencies {
+    nodemailer: Nodemailer;
+}
\ No newline at end of file
diff --git a/src/lib/TOTPSecret.ts b/src/types/TOTPSecret.ts
similarity index 100%
rename from src/lib/TOTPSecret.ts
rename to src/types/TOTPSecret.ts
diff --git a/test/unitary/AuthenticationRegulator.test.ts b/test/unitary/AuthenticationRegulator.test.ts
index 3ee9e1c2..50a739d2 100644
--- a/test/unitary/AuthenticationRegulator.test.ts
+++ b/test/unitary/AuthenticationRegulator.test.ts
@@ -1,5 +1,5 @@
 
-import { AuthenticationRegulator } from "../../src/lib/AuthenticationRegulator";
+import AuthenticationRegulator from "../../src/lib/AuthenticationRegulator";
 import UserDataStore from "../../src/lib/UserDataStore";
 import * as MockDate from "mockdate";
 
diff --git a/test/unitary/Server.test.ts b/test/unitary/Server.test.ts
index bc930f3b..ed698aad 100644
--- a/test/unitary/Server.test.ts
+++ b/test/unitary/Server.test.ts
@@ -2,11 +2,11 @@
 import Server from "../../src/lib/Server";
 import Ldap = require("../../src/lib/ldap");
 
-import * as Promise from "bluebird";
-import * as speakeasy from "speakeasy";
-import * as request from "request";
-import * as nedb from "nedb";
-import { TOTPSecret } from "../../src/lib/TOTPSecret";
+import Promise = require("bluebird");
+import speakeasy = require("speakeasy");
+import request = require("request");
+import nedb = require("nedb");
+import { TOTPSecret } from "../../src/types/TOTPSecret";
 
 
 const requestp = Promise.promisifyAll(request) as request.RequestAsync;
@@ -29,7 +29,6 @@ describe("test the server", function () {
   beforeEach(function () {
     const config = {
       port: PORT,
-      totp_secret: "totp_secret",
       ldap: {
         url: "ldap://127.0.0.1:389",
         base_dn: "ou=users,dc=example,dc=com",
diff --git a/test/unitary/TOTPValidator.ts b/test/unitary/TOTPValidator.ts
new file mode 100644
index 00000000..e2d06f67
--- /dev/null
+++ b/test/unitary/TOTPValidator.ts
@@ -0,0 +1,30 @@
+
+import TOTPValidator from "../../src/lib/TOTPValidator";
+import sinon = require("sinon");
+import Promise = require("bluebird");
+import SpeakeasyMock = require("./mocks/speakeasy");
+
+describe("test TOTP validation", function() {
+  let totpValidator: TOTPValidator;
+
+  beforeEach(() => {
+    SpeakeasyMock.totp.returns("token");
+    totpValidator = new TOTPValidator(SpeakeasyMock as any);
+  });
+
+  it("should validate the TOTP token", function() {
+    const totp_secret = "NBD2ZV64R9UV1O7K";
+    const token = "token";
+    return totpValidator.validate(token, totp_secret);
+  });
+
+  it("should not validate a wrong TOTP token", function() {
+    const totp_secret = "NBD2ZV64R9UV1O7K";
+    const token = "wrong token";
+    return totpValidator.validate(token, totp_secret)
+    .catch(function() {
+      return Promise.resolve();
+    });
+  });
+});
+
diff --git a/test/unitary/data_persistence.test.ts b/test/unitary/data_persistence.test.ts
index 494bb0a7..1e721872 100644
--- a/test/unitary/data_persistence.test.ts
+++ b/test/unitary/data_persistence.test.ts
@@ -4,7 +4,7 @@ import * as request from "request";
 
 import Server from "../../src/lib/Server";
 import { UserConfiguration } from "../../src/lib/Configuration";
-import { GlobalDependencies } from "../../src/lib/Dependencies";
+import { GlobalDependencies } from "../../src/types/Dependencies";
 import * as tmp from "tmp";
 
 
diff --git a/test/unitary/mocks/nodemailer.ts b/test/unitary/mocks/nodemailer.ts
index 1e42d13e..09d3564d 100644
--- a/test/unitary/mocks/nodemailer.ts
+++ b/test/unitary/mocks/nodemailer.ts
@@ -1,6 +1,5 @@
 
 import sinon = require("sinon");
-import { Nodemailer } from "../../../src/lib/Dependencies";
 
 export = {
     createTransport: sinon.stub()
diff --git a/test/unitary/mocks/speakeasy.ts b/test/unitary/mocks/speakeasy.ts
new file mode 100644
index 00000000..023614dc
--- /dev/null
+++ b/test/unitary/mocks/speakeasy.ts
@@ -0,0 +1,7 @@
+
+import sinon = require("sinon");
+
+export = {
+    totp: sinon.stub(),
+    generateSecret: sinon.stub()
+};
diff --git a/test/unitary/notifiers/NotifierFactory.test.ts b/test/unitary/notifiers/NotifierFactory.test.ts
index 25600b0c..b0233d70 100644
--- a/test/unitary/notifiers/NotifierFactory.test.ts
+++ b/test/unitary/notifiers/NotifierFactory.test.ts
@@ -9,7 +9,7 @@ import { NotifierFactory } from "../../../src/lib/notifiers/NotifierFactory";
 import { GMailNotifier } from "../../../src/lib/notifiers/GMailNotifier";
 import { FileSystemNotifier } from "../../../src/lib/notifiers/FileSystemNotifier";
 
-import { NotifierDependencies } from "../../../src/lib/Dependencies";
+import { NotifierDependencies } from "../../../src/types/Dependencies";
 
 
 describe("test notifier", function() {
diff --git a/test/unitary/routes/test_totp.js b/test/unitary/routes/test_totp.js
index 1fd0fc4d..18e161df 100644
--- a/test/unitary/routes/test_totp.js
+++ b/test/unitary/routes/test_totp.js
@@ -7,7 +7,7 @@ var winston = require('winston');
 
 describe('test totp route', function() {
   var req, res;
-  var totp_engine;
+  var totpValidator;
   var user_data_store;
 
   beforeEach(function() {
@@ -33,8 +33,8 @@ describe('test totp route', function() {
     };
 
     var config = { totp_secret: 'secret' };
-    totp_engine = {
-      totp: sinon.stub()
+    totpValidator = {
+      validate: sinon.stub()
     }
 
     user_data_store = {};
@@ -47,14 +47,14 @@ describe('test totp route', function() {
     user_data_store.get_totp_secret.returns(Promise.resolve(doc));
 
     app_get.withArgs('logger').returns(winston);
-    app_get.withArgs('totp engine').returns(totp_engine);
+    app_get.withArgs('totp validator').returns(totpValidator);
     app_get.withArgs('config').returns(config);
     app_get.withArgs('user data store').returns(user_data_store);
   });
 
 
   it('should send status code 204 when totp is valid', function(done) {
-    totp_engine.totp.returns('abc');
+    totpValidator.validate.returns(Promise.resolve("ok"));
     res.send = sinon.spy(function() {
       // Second factor passed
       assert.equal(true, req.session.auth_session.second_factor)
@@ -65,7 +65,7 @@ describe('test totp route', function() {
   });
 
   it('should send status code 401 when totp is not valid', function(done) {
-    totp_engine.totp.returns('bad_token');
+    totpValidator.validate.returns(Promise.reject('bad_token'));
     res.send = sinon.spy(function() {
       assert.equal(false, req.session.auth_session.second_factor)
       assert.equal(401, res.status.getCall(0).args[0]);
@@ -75,7 +75,7 @@ describe('test totp route', function() {
   });
 
   it('should send status code 401 when session has not been initiated', function(done) {
-    totp_engine.totp.returns('abc');
+    totpValidator.validate.returns(Promise.resolve('abc'));
     res.send = sinon.spy(function() {
       assert.equal(403, res.status.getCall(0).args[0]);
       done();
diff --git a/test/unitary/routes/test_totp_register.js b/test/unitary/routes/test_totp_register.js
index 784449df..6ef33c69 100644
--- a/test/unitary/routes/test_totp_register.js
+++ b/test/unitary/routes/test_totp_register.js
@@ -81,7 +81,9 @@ describe('test totp register', function() {
 
   function test_post_secret() {
     it('should send the secret in json format', function(done) {
-      req.app.get.withArgs('totp engine').returns(require('speakeasy'));
+      req.app.get.withArgs('totp generator').returns({
+        generate: sinon.stub().returns({ otpauth_url: "abc"})
+      });
       req.session.auth_session.identity_check = {};
       req.session.auth_session.identity_check.userid = 'user';
       req.session.auth_session.identity_check.challenge = 'totp-register';
@@ -92,7 +94,9 @@ describe('test totp register', function() {
     });
 
     it('should clear the session for reauthentication', function(done) {
-      req.app.get.withArgs('totp engine').returns(require('speakeasy'));
+      req.app.get.withArgs('totp generator').returns({
+        generate: sinon.stub().returns({ otpauth_url: "abc"})
+      });
       req.session.auth_session.identity_check = {};
       req.session.auth_session.identity_check.userid = 'user';
       req.session.auth_session.identity_check.challenge = 'totp-register';
@@ -114,7 +118,9 @@ describe('test totp register', function() {
     });
 
     it('should return 500 if db throws', function(done) {
-      req.app.get.withArgs('totp engine').returns(require('speakeasy'));
+      req.app.get.withArgs('totp generator').returns({
+        generate: sinon.stub().returns({ otpauth_url: "abc" })
+      });
       req.session.auth_session.identity_check = {};
       req.session.auth_session.identity_check.userid = 'user';
       req.session.auth_session.identity_check.challenge = 'totp-register';
diff --git a/test/unitary/server_config.test.ts b/test/unitary/server_config.test.ts
index c03072ce..350d2d66 100644
--- a/test/unitary/server_config.test.ts
+++ b/test/unitary/server_config.test.ts
@@ -1,30 +1,32 @@
 
-import * as assert from "assert";
-import * as sinon from "sinon";
+import assert = require("assert");
+import sinon = require ("sinon");
 import nedb = require("nedb");
-import * as express from "express";
-import * as winston from "winston";
-import * as speakeasy from "speakeasy";
-import * as u2f from "authdog";
+import express = require("express");
+import winston = require("winston");
+import speakeasy = require("speakeasy");
+import u2f = require("authdog");
+import nodemailer = require("nodemailer");
+import session = require("express-session");
 
 import { AppConfiguration, UserConfiguration } from "../../src/lib/Configuration";
-import { GlobalDependencies, Nodemailer } from "../../src/lib/Dependencies";
+import { GlobalDependencies, Nodemailer } from "../../src/types/Dependencies";
 import Server from "../../src/lib/Server";
 
 
 describe("test server configuration", function () {
   let deps: GlobalDependencies;
+  let sessionMock: sinon.SinonSpy;
 
   before(function () {
     const transporter = {
       sendMail: sinon.stub().yields()
     };
 
-    const nodemailer: Nodemailer = {
-      createTransport: sinon.spy(function () {
-        return transporter;
-      })
-    };
+    const createTransport = sinon.stub(nodemailer, "createTransport");
+    createTransport.returns(transporter);
+
+    sessionMock = sinon.spy(session);
 
     deps = {
       nodemailer: nodemailer,
@@ -37,9 +39,7 @@ describe("test server configuration", function () {
           return { on: sinon.spy() };
         })
       },
-      session: sinon.spy(function () {
-        return function (req: express.Request, res: express.Response, next: express.NextFunction) { next(); };
-      })
+      session: sessionMock as any
     };
   });
 
@@ -66,7 +66,7 @@ describe("test server configuration", function () {
     const server = new Server();
     server.start(config, deps);
 
-    assert(deps.session.calledOnce);
-    assert.equal(deps.session.getCall(0).args[0].cookie.domain, "example.com");
+    assert(sessionMock.calledOnce);
+    assert.equal(sessionMock.getCall(0).args[0].cookie.domain, "example.com");
   });
 });
diff --git a/test/unitary/test_server_config.ts b/test/unitary/test_server_config.ts
deleted file mode 100644
index 2bc02178..00000000
--- a/test/unitary/test_server_config.ts
+++ /dev/null
@@ -1,69 +0,0 @@
-
-import Server from "../../src/lib/Server";
-
-import { UserConfiguration } from "../../src/lib/Configuration";
-import { GlobalDependencies } from "../../src/lib/Dependencies";
-import * as express from "express";
-
-const sinon = require("sinon");
-const assert = require("assert");
-
-describe("test server configuration", function () {
-  let deps: GlobalDependencies;
-
-  before(function () {
-    const transporter = {
-      sendMail: sinon.stub().yields()
-    };
-
-    const nodemailer = {
-      createTransport: sinon.spy(function () {
-        return transporter;
-      })
-    };
-
-    deps = {
-      nodemailer: nodemailer,
-      speakeasy: sinon.spy(),
-      u2f: sinon.spy(),
-      nedb: require("nedb"),
-      winston: sinon.spy(),
-      ldapjs: {
-        createClient: sinon.spy(function () {
-          return { on: sinon.spy() };
-        })
-      },
-      session: sinon.spy(function () {
-        return function (req: express.Request, res: express.Response, next: express.NextFunction) { next(); };
-      })
-    };
-  });
-
-
-  it("should set cookie scope to domain set in the config", function () {
-    const config = {
-      notifier: {
-        gmail: {
-          username: "user@example.com",
-          password: "password"
-        }
-      },
-      session: {
-        domain: "example.com",
-        secret: "secret"
-      },
-      ldap: {
-        url: "http://ldap",
-        base_dn: "cn=test,dc=example,dc=com",
-        user: "user",
-        password: "password"
-      }
-    };
-
-    const server = new Server();
-    server.start(config, deps);
-
-    assert(deps.session.calledOnce);
-    assert.equal(deps.session.getCall(0).args[0].cookie.domain, "example.com");
-  });
-});
diff --git a/test/unitary/totp.test.ts b/test/unitary/totp.test.ts
deleted file mode 100644
index f797587d..00000000
--- a/test/unitary/totp.test.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-
-const totp = require("../../src/lib/totp");
-const sinon = require("sinon");
-import Promise = require("bluebird");
-
-describe("test TOTP validation", function() {
-  it("should validate the TOTP token", function() {
-    const totp_secret = "NBD2ZV64R9UV1O7K";
-    const token = "token";
-    const totp_mock = sinon.mock();
-    totp_mock.returns("token");
-    const speakeasy_mock = {
-      totp: totp_mock
-    };
-    return totp.validate(speakeasy_mock, token, totp_secret);
-  });
-
-  it("should not validate a wrong TOTP token", function() {
-    const totp_secret = "NBD2ZV64R9UV1O7K";
-    const token = "wrong token";
-    const totp_mock = sinon.mock();
-    totp_mock.returns("token");
-    const speakeasy_mock = {
-      totp: totp_mock
-    };
-    return totp.validate(speakeasy_mock, token, totp_secret)
-    .catch(function() {
-      return Promise.resolve();
-    });
-  });
-});
-