public async void GetUserAccountById_Return_NotFound()
{
//Arange
_mockUserAccountProvider.Setup(x => x.GetUserAccountListById(It.IsAny <long>())).Returns(Task.FromResult((IEnumerable <UserAccountAllParam>)null));
//Act
var result = await _controller.GetuserAccountById(1).ConfigureAwait(false);
//Assert
Assert.NotNull(result);
Assert.IsType <NotFoundResult>(result);
}