public void Validate_WhenRequestIsInvalid_Fails(UpdateTaxRequest request)
        {
            var result = _validator.Validate(request);

            result.IsValid.Should().BeFalse();
            result.Errors.Should().NotBeEmpty();
        }
        public void Validate_WhenRequestIsValid_Passes(UpdateTaxRequest request)
        {
            var result = _validator.Validate(request);

            result.IsValid.Should().BeTrue();
            result.Errors.Should().BeEmpty();
        }