public void AddUserToRolesShouldWorkCorrectly()
        {
            var adapter = new AspNetMembershipAdapter();

            adapter.CreateUser(UserName, Password, null);

            adapter.AddUserToRoles(UserName, new[] { Role1, Role2 });

            Assert.IsTrue(Roles.Provider.IsUserInRole(UserName, Role1));
            Assert.IsTrue(Roles.Provider.IsUserInRole(UserName, Role2));
            Assert.IsFalse(Roles.Provider.IsUserInRole(UserName, NonExistingRole));
        }