public void Setup()
{
_userGroupRepository = new Mock <IUserGroupRepository>();
getUserGroupsQueryHandler = new GetUserGroupsQueryHandler(_userGroupRepository.Object);
createUserGroupCommandHandler = new CreateUserGroupCommandHandler(_userGroupRepository.Object);
updateUserGroupCommandHandler = new UpdateUserGroupCommandHandler(_userGroupRepository.Object);
deleteUserGroupCommandHandler = new DeleteUserGroupCommandHandler(_userGroupRepository.Object);
}