add tests localStorage

js/plugins/LocalStorage.js

@@ -18,11 +18,11 @@ LocalStorage.prototype.init = function() {
 };
 
 LocalStorage.prototype.setCredentials = function(email, password, opts) {
-  this.email = email;
-  this.password = password;
+  // NOP
 };
 
 LocalStorage.prototype.getItem = function(k,cb) {
+  preconditions.checkArgument(_.isFunction(cb));
   return cb(null, this.ls.getItem(k));
 };
 
@@ -30,6 +30,7 @@ LocalStorage.prototype.getItem = function(k,cb) {
  * Same as setItem, but fails if an item already exists
  */
 LocalStorage.prototype.createItem = function(name, value, callback) {
+  preconditions.checkArgument(_.isFunction(callback));
   if (this.ls.getItem(name)) {
     return callback('EEXISTS');
   }
@@ -37,16 +38,19 @@ LocalStorage.prototype.createItem = function(name, value, callback) {
 };
 
 LocalStorage.prototype.setItem = function(k,v,cb) {
+  preconditions.checkArgument(_.isFunction(cb));
   this.ls.setItem(k,v);
   return cb();
 };
 
 LocalStorage.prototype.removeItem = function(k,cb) { 
+  preconditions.checkArgument(_.isFunction(cb));
   this.ls.removeItem(k);
   return cb();
 };
 
 LocalStorage.prototype.clear = function(cb) { 
+  preconditions.checkArgument(_.isFunction(cb));
   this.ls.clear();
   return cb();
 };

test/plugin.localstorage.js

@@ -8,6 +8,7 @@ describe('local storage plugin', function() {
   beforeEach(function() {
     storageMock = {};
     storageMock.getItem = sinon.stub().returns(VALUE);
+    storageMock.createItem = sinon.stub().returns();
     storageMock.setItem = sinon.stub().returns();
     storageMock.removeItem = sinon.stub().returns();
     storageMock.clear = sinon.stub().returns();
@@ -25,6 +26,22 @@ describe('local storage plugin', function() {
     });
   });
 
+  it('#createItem', function(done) {
+    storageMock.getItem = sinon.stub().returns(null);
+    storage.createItem('hola', 'value', function(err) {
+      assert(!err);
+      return done();
+    });
+  });
+
+  it('#createItem (Exists)', function(done) {
+    storage.createItem('hola', 'value', function(err) {
+      err.should.contain('EEXISTS');
+      return done();
+    });
+  });
+
+
 
   it('#removeItem', function(done) {
     storage.removeItem('pepe', function(err) {