private void InitializeTestDBEntries()
{
_user1.UserID = UserDAO.CreateNewUser(_user1, "pw1");
_user2.UserID = UserDAO.CreateNewUser(_user2, "pw2");
_user3.UserID = UserDAO.CreateNewUser(_user3, "pw3");
_user4.UserID = UserDAO.CreateNewUser(_user4, "pw4");
_group1.ID = GroupDAO.CreateNewGroup(_group1);
_group2.ID = GroupDAO.CreateNewGroup(_group2);
}