diff --git a/js/models/Storage.js b/js/models/Storage.js
index 4d24928f7..4d842e431 100644
--- a/js/models/Storage.js
+++ b/js/models/Storage.js
@@ -99,17 +99,22 @@ Storage.prototype.setGlobal = function(k, v, cb) {
 // remove value for key
 Storage.prototype.removeGlobal = function(k, cb) {
   preconditions.checkArgument(cb);
-
   this.storage.removeItem(k, cb);
 };
 
-Storage.prototype.getSessionId = function() {
-  var sessionId = this.sessionStorage.getItem('sessionId');
-  if (!sessionId) {
+Storage.prototype.getSessionId = function(cb) {
+  preconditions.checkArgument(cb);
+  var self = this;
+
+  self.sessionStorage.getItem('sessionId', function(sessionId) {
+    if (sessionId)
+      return cb(sessionId);
+
     sessionId = bitcore.SecureRandom.getRandomBuffer(8).toString('hex');
-    this.sessionStorage.setItem('sessionId', sessionId);
-  }
-  return sessionId;
+    self.sessionStorage.setItem('sessionId', sessionId, function(){
+      return cb(sessionId);
+    });
+  });
 };
 
 Storage.prototype._key = function(walletId, k) {
@@ -117,14 +122,15 @@ Storage.prototype._key = function(walletId, k) {
 };
 // get value by key
 Storage.prototype.get = function(walletId, k, cb) {
+  preconditions.checkArgument(walletId, k, cb);
   this._read(this._key(walletId, k), cb);
 };
 
 
 Storage.prototype._readHelper = function(walletId, k, cb) {
   var wk = this._key(walletId, k);
-  this._read(wk, function(v){
-    return cb(v,k);
+  this._read(wk, function(v) {
+    return cb(v, k);
   });
 };
 
@@ -133,15 +139,15 @@ Storage.prototype.getMany = function(walletId, keys, cb) {
 
   var self = this;
   var ret = {};
-console.log('[Storage.js.142:keys:]',keys); //TODO
 
-  var l = keys.length, i=0;
+  var l = keys.length,
+    i = 0;
 
   for (var ii in keys) {
     this._readHelper(walletId, keys[ii], function(v, k) {
       ret[k] = v;
       if (++i == l) {
-       return cb(ret);
+        return cb(ret);
       }
     });
   }
@@ -202,7 +208,8 @@ Storage.prototype.getWallets = function(cb) {
   var self = this;
 
   this.getWalletIds(function(ids) {
-    var l = ids.length, i=0;
+    var l = ids.length,
+      i = 0;
     if (!l)
       return cb([]);
 
@@ -221,21 +228,29 @@ Storage.prototype.getWallets = function(cb) {
   });
 };
 
-Storage.prototype.deleteWallet = function(walletId) {
+Storage.prototype.deleteWallet = function(walletId, cb) {
   preconditions.checkArgument(walletId);
+  preconditions.checkArgument(cb);
 
   var toDelete = {};
   toDelete['nameFor::' + walletId] = 1;
 
-  for (var i = 0; i < this.storage.length; i++) {
-    var key = this.storage.key(i);
-    var split = key.split('::');
-    if (split.length == 2 && split[0] === walletId) {
-      toDelete[key] = 1;
+  this.storage.allKeys(function(allKeys) {
+    for (var key in allKeys) {
+      var split = key.split('::');
+      if (split.length == 2 && split[0] === walletId) {
+        toDelete[key] = 1;
+      };
     }
-  }
+  });
+
+  var l = toDelete.length,
+    i = 0;
   for (var i in toDelete) {
-    this.removeGlobal(i);
+    this.removeGlobal(i, function() {
+      if (++i == l)
+        return cb();
+    });
   }
 };
 
@@ -255,7 +270,6 @@ Storage.prototype.setFromObj = function(walletId, obj, cb) {
   var l = Object.keys(obj).length,
     i = 0;
   for (var k in obj) {
-    console.log('[Storage.js.247]', k, i, l); //TODO
     self.set(walletId, k, obj[k], function() {
       if (++i == l) {
         self.setName(walletId, obj.opts.name, cb);
diff --git a/js/models/core/WalletFactory.js b/js/models/core/WalletFactory.js
index 18d5ed063..eb0c432af 100644
--- a/js/models/core/WalletFactory.js
+++ b/js/models/core/WalletFactory.js
@@ -182,6 +182,8 @@ WalletFactory.prototype.read = function(walletId, skipFields, cb) {
  * @return {Wallet}
  */
 WalletFactory.prototype.create = function(opts, cb) {
+  preconditions.checkArgument(cb);
+
   opts = opts || {};
   opts.networkName = opts.networkName || 'testnet';
 
@@ -229,6 +231,7 @@ WalletFactory.prototype.create = function(opts, cb) {
   opts.totalCopayers = totalCopayers;
   opts.version = opts.version || this.version;
 
+console.log('[WalletFactory.js.165]'); //TODO
   var w = new Wallet(opts);
   var self = this;
   w.store(function() {
@@ -266,6 +269,7 @@ WalletFactory.prototype._checkVersion = function(inVersion) {
  * @return
  */
 WalletFactory.prototype.open = function(walletId, passphrase, cb) {
+  preconditions.checkArgument(cb);
   var self = this,
     err;
   self.storage._setPassphrase(passphrase);
@@ -334,6 +338,7 @@ WalletFactory.prototype.decodeSecret = function(secret) {
  * @param {walletCreationCallback} cb - a callback
  */
 WalletFactory.prototype.joinCreateSession = function(secret, nickname, passphrase, privateHex, cb) {
+  preconditions.checkArgument(cb);
   var self = this;
   var decodedSecret = this.decodeSecret(secret);
   if (!decodedSecret || !decodedSecret.networkName || !decodedSecret.pubKey) {
diff --git a/js/models/core/WalletLock.js b/js/models/core/WalletLock.js
index 66e2458d2..fa449b855 100644
--- a/js/models/core/WalletLock.js
+++ b/js/models/core/WalletLock.js
@@ -6,13 +6,24 @@ function WalletLock(storage, walletId, timeoutMin) {
   preconditions.checkArgument(storage);
   preconditions.checkArgument(walletId);
 
-  this.sessionId = storage.getSessionId();
   this.storage = storage;
   this.timeoutMin = timeoutMin || 5;
   this.key = WalletLock._keyFor(walletId);
-  //  this._setLock(function() {});
 }
 
+
+WalletLock.prototype.init = function(cb) {
+  preconditions.checkArgument(cb);
+  var self = this;
+
+  self.storage.getSessionId(function(sid) {
+    preconditions.checkState(sid);
+
+    self.sessionId = sid;
+    cb();
+  });
+};
+
 WalletLock._keyFor = function(walletId) {
   return 'lock' + '::' + walletId;
 };
@@ -22,18 +33,27 @@ WalletLock.prototype._isLockedByOther = function(cb) {
 
   this.storage.getGlobal(this.key, function(json) {
     var wl = json ? JSON.parse(json) : null;
-    var t = wl ? (Date.now() - wl.expireTs) : false;
-    // is not locked?
-    if (!wl || t > 0 || wl.sessionId === self.sessionId)
+    if (!wl || !wl.expireTs)
+      return cb(false);
+
+    var expiredSince = Date.now() - wl.expireTs;
+    if (expiredSince >= 0)
+      return cb(false);
+
+    var isMyself = wl.sessionId === self.sessionId;
+
+    if (isMyself)
       return cb(false);
 
     // Seconds remainding
-    return cb(parseInt(-t / 1000.));
+    return cb(parseInt(-expiredSince / 1000));
   });
 };
 
 
 WalletLock.prototype._setLock = function(cb) {
+  preconditions.checkArgument(cb);
+  preconditions.checkState(this.sessionId);
 
   this.storage.setGlobal(this.key, {
     sessionId: this.sessionId,
@@ -44,20 +64,33 @@ WalletLock.prototype._setLock = function(cb) {
 };
 
 
-WalletLock.prototype.keepAlive = function(cb) {
+WalletLock.prototype._doKeepAlive = function(cb) {
+  preconditions.checkArgument(cb);
   preconditions.checkState(this.sessionId);
+
   var self = this;
 
   this._isLockedByOther(function(t) {
-
     if (t)
-      return cb(new Error('Wallet is already open. Close it to proceed or wait ' + t + ' seconds if you close it already'));
+      return cb(new Error('LOCKED: Wallet is locked for ' + t + ' srcs'));
 
     self._setLock(cb);
   });
 };
 
 
+
+WalletLock.prototype.keepAlive = function(cb) {
+  var self = this;
+
+  if (!self.sessionId) {
+    return self.init(self._doKeepAlive.bind(self, cb));
+  };
+
+  return this._doKeepAlive(cb);
+};
+
+
 WalletLock.prototype.release = function(cb) {
   this.storage.removeGlobal(this.key, cb);
 };
diff --git a/test/mocks/FakeLocalStorage.js b/test/mocks/FakeLocalStorage.js
index a276abaec..fba5e7dfd 100644
--- a/test/mocks/FakeLocalStorage.js
+++ b/test/mocks/FakeLocalStorage.js
@@ -5,8 +5,9 @@ function LocalStorage(opts) {
 
 FakeLocalStorage = {};
 FakeLocalStorage.length = 0;
-FakeLocalStorage.removeItem = function(key) {
+FakeLocalStorage.removeItem = function(key,cb) {
   delete ls[key];
+  cb();
 };
 
 FakeLocalStorage.getItem = function(k,cb) {
diff --git a/test/mocks/FakeStorage.js b/test/mocks/FakeStorage.js
index 9aea4d2ea..39a4b2ade 100644
--- a/test/mocks/FakeStorage.js
+++ b/test/mocks/FakeStorage.js
@@ -11,57 +11,65 @@ FakeStorage.prototype._setPassphrase = function(password) {
   this.storage.passphrase = password;
 };
 
-FakeStorage.prototype.setGlobal = function(id, v) {
+FakeStorage.prototype.setGlobal = function(id, v, cb) {
   this.storage[id] = typeof v === 'object' ? JSON.stringify(v) : v;
+  cb();
 };
 
-FakeStorage.prototype.getGlobal = function(id) {
-  return this.storage[id];
+FakeStorage.prototype.getGlobal = function(id, cb) {
+  return cb(this.storage[id]);
 };
 
-FakeStorage.prototype.setLastOpened = function(val) {
+FakeStorage.prototype.setLastOpened = function(val, cb) {
   this.storage['lastOpened'] = val;
+  return cb();
 };
 
-FakeStorage.prototype.getLastOpened = function() {
-  return this.storage['lastOpened'];
+FakeStorage.prototype.getLastOpened = function(cb) {
+  return cb(this.storage['lastOpened']);
 };
 
 FakeStorage.prototype.setLock = function(id) {
   this.storage[id + '::lock'] = true;
+  return cb();
 }
 
-FakeStorage.prototype.getLock = function(id) {
-  return this.storage[id + '::lock'];
+FakeStorage.prototype.getLock = function(id,cb) {
+  return cb(this.storage[id + '::lock']);
 }
 
-FakeStorage.prototype.getSessionId = function() {
-  return this.sessionId || 'aSessionId';
+FakeStorage.prototype.getSessionId = function(cb) {
+  this.sessionId = this.sessionId || 'aSessionId';
+  return cb(this.sessionId);
 };
 
 
-FakeStorage.prototype.removeLock = function(id) {
+FakeStorage.prototype.removeLock = function(id,cb) {
   delete this.storage[id + '::lock'];
+  cb();
 }
 
-FakeStorage.prototype.removeGlobal = function(id) {
+FakeStorage.prototype.removeGlobal = function(id,cb) {
   delete this.storage[id];
+  cb();
 };
 
 
-FakeStorage.prototype.set = function(wid, id, payload) {
+FakeStorage.prototype.set = function(wid, id, payload, cb) {
   this.storage[wid + '::' + id] = payload;
+  if (cb) return cb();
 };
 
-FakeStorage.prototype.get = function(wid, id) {
-  return this.storage[wid + '::' + id];
+FakeStorage.prototype.get = function(wid, id, cb) {
+  return cb(this.storage[wid + '::' + id]);
 };
 
-FakeStorage.prototype.clear = function() {
+FakeStorage.prototype.clear = function(cb) {
   delete this['storage'];
+  cb();
 };
 
-FakeStorage.prototype.getWalletIds = function() {
+FakeStorage.prototype.getWalletIds = function(cb) {
   var walletIds = [];
   var uniq = {};
 
@@ -79,10 +87,10 @@ FakeStorage.prototype.getWalletIds = function() {
       }
     }
   }
-  return walletIds;
+  return cb(walletIds);
 };
 
-FakeStorage.prototype.deleteWallet = function(walletId) {
+FakeStorage.prototype.deleteWallet = function(walletId, cb) {
   var toDelete = {};
   toDelete['nameFor::' + walletId] = 1;
 
@@ -98,17 +106,17 @@ FakeStorage.prototype.deleteWallet = function(walletId) {
 };
 
 
-FakeStorage.prototype.getName = function(walletId) {
-  return this.getGlobal('nameFor::' + walletId);
+FakeStorage.prototype.getName = function(walletId,cb) {
+  return this.getGlobal('nameFor::' + walletId,cb);
 };
 
 
-FakeStorage.prototype.setName = function(walletId, name) {
-  this.setGlobal('nameFor::' + walletId, name);
+FakeStorage.prototype.setName = function(walletId, name, cb) {
+  this.setGlobal('nameFor::' + walletId, name, cb);
 };
 
 
-FakeStorage.prototype.getWallets = function() {
+FakeStorage.prototype.getWallets = function(cb) {
   var wallets = [];
   var ids = this.getWalletIds();
 
@@ -118,14 +126,14 @@ FakeStorage.prototype.getWallets = function() {
       name: this.getName(ids[i]),
     });
   }
-  return wallets;
+  return cb(wallets);
 };
 
-FakeStorage.prototype.setFromObj = function(walletId, obj) {
+FakeStorage.prototype.setFromObj = function(walletId, obj, cb) {
   for (var k in obj) {
     this.set(walletId, k, obj[k]);
   }
-  this.setName(walletId, obj.opts.name);
+  this.setName(walletId, obj.opts.name, cb);
 };
 
 module.exports = FakeStorage;
diff --git a/test/test.Storage.js b/test/test.Storage.js
index fd03c8cee..0363108ab 100644
--- a/test/test.Storage.js
+++ b/test/test.Storage.js
@@ -39,15 +39,13 @@ describe('Storage model', function() {
     s._write(fakeWallet + timeStamp, 'value', function() {
       s._read(fakeWallet + timeStamp, function(v) {
         v.should.equal('value');
-        localMock.removeItem(fakeWallet + timeStamp);
-        done();
+        localMock.removeItem(fakeWallet + timeStamp, done);
       });
     });
   });
   it('should be able to set a value', function(done) {
     s.set(fakeWallet, timeStamp, 1, function() {
-      localMock.removeItem(fakeWallet + '::' + timeStamp);
-      done();
+      localMock.removeItem(fakeWallet + '::' + timeStamp, done);
     });
   });
   var getSetData = [
@@ -68,11 +66,11 @@ describe('Storage model', function() {
     null
   ];
   getSetData.forEach(function(obj) {
-    it('should be able to set a value and get it for ' + JSON.stringify(obj), function() {
+    it('should be able to set a value and get it for ' + JSON.stringify(obj), function(done) {
       s.set(fakeWallet, timeStamp, obj, function() {
         s.get(fakeWallet, timeStamp, function(obj2) {
           JSON.stringify(obj2).should.equal(JSON.stringify(obj));
-          localMock.removeItem(fakeWallet + '::' + timeStamp);
+          localMock.removeItem(fakeWallet + '::' + timeStamp, done);
         });
       });
     });
@@ -91,15 +89,13 @@ describe('Storage model', function() {
         };
         var encrypted = storage.export(obj);
         encrypted.length.should.be.greaterThan(10);
-        localMock.removeItem(fakeWallet + '::' + timeStamp);
-        done();
-
+        localMock.removeItem(fakeWallet + '::' + timeStamp, done);
       });
     });
   });
 
-  describe('#remove', function(done) {
-    it('should remove an item', function() {
+  describe('#remove', function() {
+    it('should remove an item', function(done) {
       var s = new Storage({
         storage: localMock,
         sessionStorage: sessionMock,
@@ -109,8 +105,10 @@ describe('Storage model', function() {
         s.get('1', 'hola', function(v) {
           v.should.equal('juan');
           s.remove('1', 'hola', function() {
-            should.not.exist(s.get('1', 'hola'));
-            done();
+            s.get('1', 'hola', function(v) {
+              should.not.exist(v);
+              done();
+            });
           });
         })
       })
@@ -169,62 +167,75 @@ describe('Storage model', function() {
 
   if (is_browser) {
     describe('#getSessionId', function() {
-      it('should get SessionId', function() {
+      it('should get SessionId', function(done) {
         var s = new Storage({
           storage: localMock,
           sessionStorage: sessionMock,
           password: 'password'
         });
-        var sid = s.getSessionId();
-        should.exist(sid);
-        var sid2 = s.getSessionId();
-        sid2.should.equal(sid);
+        s.getSessionId(function(sid) {
+          should.exist(sid);
+          s.getSessionId(function(sid2) {
+            sid2.should.equal(sid);
+            done();
+          });
+        });
       });
     });
   }
 
   describe('#getWallets', function() {
-    it('should retreive wallets from storage', function() {
+    it('should retreive wallets from storage', function(done) {
       var s = new Storage({
         storage: localMock,
         sessionStorage: sessionMock,
         password: 'password'
       });
-      s.set('1', "hola", 'juan');
-      s.set('2', "hola", 'juan');
-      s.setName(1, 'hola');
-      s.getWallets()[0].should.deep.equal({
-        id: '1',
-        name: 'hola',
-      });
-      s.getWallets()[1].should.deep.equal({
-        id: '2',
-        name: undefined
+      s.set('1', "hola", 'juan', function() {
+        s.set('2', "hola", 'juan', function() {
+          s.setName(1, 'hola', function() {
+            s.getWallets(function(ws) {
+              ws[0].should.deep.equal({
+                id: '1',
+                name: 'hola',
+              });
+              ws[1].should.deep.equal({
+                id: '2',
+                name: undefined
+              });
+              done();
+            });
+          });
+        });
       });
     });
   });
-  describe('#deleteWallet', function() {
+  describe('#deleteWallet', function(done) {
     it('should delete a wallet', function() {
       var s = new Storage({
         storage: localMock,
         sessionStorage: sessionMock,
         password: 'password'
       });
-      s.set('1', "hola", 'juan');
-      s.set('2', "hola", 'juan');
-      s.setName(1, 'hola');
-
-      s.deleteWallet('1');
-      s.getWallets().length.should.equal(1);
-      s.getWallets()[0].should.deep.equal({
-        id: '2',
-        name: undefined
+      s.set('1', "hola", 'juan', function() {
+        s.set('2', "hola", 'juan', function() {
+          s.deleteWallet('1', function() {
+            s.getWallets(function(ws) {
+              s.getWallets().length.should.equal(1);
+              ws[0].should.deep.equal({
+                id: '2',
+                name: undefined
+              });
+              done();
+            });
+          });
+        });
       });
     });
   });
 
   describe('#setFromObj', function() {
-    it('set localstorage from an object', function() {
+    it('set localstorage from an object', function(done) {
       var s = new Storage({
         storage: localMock,
         sessionStorage: sessionMock,
@@ -235,42 +246,57 @@ describe('Storage model', function() {
         'opts': {
           'name': 'nameid1'
         },
+      }, function() {
+        s.get('id1', 'key', function(v) {
+          v.should.equal('val');
+          done();
+        });
       });
-
-      s.get('id1', 'key').should.equal('val');
-
     });
   });
 
 
   describe('#globals', function() {
-    it('should set, get and remove keys', function() {
+    it('should set, get and remove keys', function(done) {
       var s = new Storage({
         storage: localMock,
         sessionStorage: sessionMock,
         password: 'password'
       });
+
       s.setGlobal('a', {
         b: 1
+      }, function() {
+        s.getGlobal('a', function(v) {
+
+          JSON.parse(v).should.deep.equal({
+            b: 1
+          });
+          s.removeGlobal('a', function() {
+            s.getGlobal('a', function(v) {
+              should.not.exist(v);
+              done();
+            });
+          });
+        });
       });
-      JSON.parse(s.getGlobal('a')).should.deep.equal({
-        b: 1
-      });
-      s.removeGlobal('a');
-      should.not.exist(s.getGlobal('a'));
     });
   });
 
 
   describe('session storage', function() {
-    it('should get a session ID', function() {
+    it('should get a session ID', function(done) {
       var s = new Storage({
         storage: localMock,
         sessionStorage: sessionMock,
         password: 'password'
       });
-      s.getSessionId().length.should.equal(16);
-      (new Buffer(s.getSessionId(), 'hex')).length.should.equal(8);
+      s.getSessionId(function(s) {
+        should.exist(s);
+        s.length.should.equal(16);
+        (new Buffer(s, 'hex')).length.should.equal(8);
+        done();
+      });
     });
   });
 });
diff --git a/test/test.WalletFactory.js b/test/test.WalletFactory.js
index 8712c4121..f736c339f 100644
--- a/test/test.WalletFactory.js
+++ b/test/test.WalletFactory.js
@@ -117,16 +117,17 @@ describe('WalletFactory model', function() {
     wf.version.should.equal('0.0.1');
   });
 
-  it('#_checkRead should return false', function() {
-    var wf = new WalletFactory(config);
-    wf._checkRead('dummy').should.equal(false);
-    wf.read('dummy').should.equal(false);
-  });
 
-  it('should be able to create wallets', function() {
+  it('should be able to create wallets', function(done) {
     var wf = new WalletFactory(config, '0.0.1');
-    var w = wf.create();
-    should.exist(w);
+    wf.create(null, function(err, w) {
+
+console.log('[test.WalletFactory.js.123]'); //TODO
+      should.not.exist(err);
+      should.exist(w);
+      w.should.be.instanceof('WalletFactory');
+      done();
+    });
   });
 
   it('should be able to create wallets with given pk', function() {
diff --git a/test/test.WalletLock.js b/test/test.WalletLock.js
index f3ccf051d..e8e418a96 100644
--- a/test/test.WalletLock.js
+++ b/test/test.WalletLock.js
@@ -15,8 +15,11 @@ var WalletLock = copay.WalletLock;
 var PrivateKey = copay.PrivateKey;
 var Storage = require('./mocks/FakeStorage');
 
+var storage;
 describe('WalletLock model', function() {
-  var storage = new Storage();
+  beforeEach(function() {
+    storage = new Storage();
+  });
 
   it('should fail with missing args', function() {
     (function() {
@@ -36,45 +39,70 @@ describe('WalletLock model', function() {
     should.exist(w);
   });
 
-  it('should NOT fail if locked already', function() {
-    var w = new WalletLock(storage, 'walletId');
-    storage.sessionId = 'xxx';
-    var w2= new WalletLock(storage, 'walletId');
-    should.exist(w2);
+
+  it('should generate a sessionId with init', function(done) {
+    var w = new WalletLock(storage, 'id');
+    var spy = sinon.spy(storage, 'getSessionId');
+    w.init(function() {
+      spy.calledOnce.should.equal(true);
+      done();
+    });
   });
 
-  it('should change status of previously openned wallet', function() {
+  it('#keepAlive should call getsessionId if not called before', function(done) {
+    var w = new WalletLock(storage, 'id');
+    var spy = sinon.spy(storage, 'getSessionId');
+    w.keepAlive(function() {
+      spy.calledOnce.should.equal(true);
+      done();
+    });
+  });
+
+  it('should NOT fail if locked already by me', function(done) {
+    var w = new WalletLock(storage, 'walletId2');
+    w.keepAlive(function() {
+      var w2 = new WalletLock(storage, 'walletId2');
+      w2.init(function() {
+        w2.keepAlive(function() {
+          w.sessionId.should.equal(w2.sessionId);
+          should.exist(w2);
+          done();
+        });
+      });
+    })
+  });
+
+  it('should FAIL if locked by someone else', function(done) {
     storage.sessionId = 'session1';
     var w = new WalletLock(storage, 'walletId');
-    storage.sessionId = 'xxx';
-    var w2= new WalletLock(storage, 'walletId');
-    w2.keepAlive();
-    (function() {w.keepAlive();}).should.throw('already open');
-
-  });
-
-
-  it('should not fail if locked by me', function() {
-    var s = new Storage();
-    var w = new WalletLock(s, 'walletId');
-    var w2 = new WalletLock(s, 'walletId')
-    w2.keepAlive();
-    should.exist(w2);
-  });
-
-  it('should not fail if expired', function() {
-    var s = new Storage();
-    var w = new WalletLock(s, 'walletId');
-    var k = Object.keys(s.storage)[0];
-    var v = JSON.parse(s.storage[k]);
-    v.expireTs = Date.now() - 60 * 6 * 1000;
-    s.storage[k] = JSON.stringify(v);
-
-    s.sessionId = 'xxx';
-    var w2 = new WalletLock(s, 'walletId')
-    should.exist(w2);
-  });
-
-
+    w.keepAlive(function() {
+      storage.sessionId = 'session2';
+      var w2 = new WalletLock(storage, 'walletId');
+      w2.keepAlive(function(locked) {
+        w2.sessionId.should.equal('session2');
+        should.exist(locked);
+        locked.message.should.contain('LOCKED');
+        done();
+      });
+    });
+  })
 
+  it('should FAIL if locked by someone else but expired', function(done) {
+    storage.sessionId = 'session1';
+    var w = new WalletLock(storage, 'walletId');
+    w.keepAlive(function() {
+      storage.sessionId = 'session2';
+      var json = JSON.parse(storage.storage['lock::walletId']);
+      json.expireTs -= 3600 * 1000;
+      storage.storage['lock::walletId'] = JSON.stringify(json);
+      var w2 = new WalletLock(storage, 'walletId');
+      w2.keepAlive(function(locked) {
+        w2.sessionId.should.equal('session2');
+        should.not.exist(locked);
+        done();
+      });
+    });
+  })
 });
+
+