Added test

test/associations/has-many.test.js

@@ -265,7 +265,7 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
       })
     })
 
-    describe.only('addAssociations', function() {
+    describe('addAssociations', function() {
       it('supports transactions', function(done) {
         Support.prepareTransactionTest(this.sequelize, function(sequelize) {
           var Article = sequelize.define('Article', { 'title': DataTypes.STRING })
@@ -654,6 +654,40 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
       })
     })
 
+    describe('addAssociations', function() {
+      it('supports transactions', function(done) {
+        var self = this
+
+        Support.prepareTransactionTest(this.sequelize, function(sequelize) {
+          var User = self.sequelize.define('User', { username: DataTypes.STRING })
+            , Task = self.sequelize.define('Task', { title: DataTypes.STRING })
+
+          User.hasMany(Task)
+          Task.hasMany(User)
+
+          User.sync({ force: true }).success(function() {
+            Task.sync({ force: true }).success(function() {
+              User.create({ username: 'foo' }).success(function(user) {
+                Task.create({ title: 'task' }).success(function(task) {
+                  self.sequelize.transaction(function(t){
+                    task.addUser(user, { transaction: t }).success(function() {
+                      task.hasUser(user).success(function(hasUser) {
+                        expect(hasUser).to.be.false
+                        task.hasUser(user, { transaction: t }).success(function(hasUser) {
+                          expect(hasUser).to.be.true
+                          t.rollback().success(function() { done() })
+                        })
+                      })
+                    })
+                  })
+                })
+              })
+            })
+          })
+        })
+      })
+    })
+
     describe('optimizations using bulk create, destroy and update', function () {
       beforeEach(function (done) {
         var self = this