classlib/ExpenseTracker.Application/Accounts/Queries/Get/GetAccountQueryValidator.cs

using FluentValidation;

namespace ExpenseTracker.Application.Accounts.Queries.Get;

public class GetAccountQueryValidator : AbstractValidator<GetAccountQuery>
{
    public GetAccountQueryValidator()
    {
        RuleFor(e => e.Id)
            .NotEmpty();
    }
}