Validating Nullable Root Objects

Hi,

i have a problem with my validation rules. When my Validator contains only the rule to check if the instance is null, i’m getting a ValidationException as expected.

RuleFor(item => item).NotNull()

If my validator contains other rules beside that, i’m getting in NullReferenceException instead.

RuleFor(item => item).NotNull();
RuleFor(item => item.Prop).NotEmpty();

So why do we have a different behaviour here?

[JeremySkinner]

Just to clarify, FluentValidation is designed to process rules against properties, and it is a requirement that the root object is not null. In fact, newer versions of FluentValidation throw an explicit exception if you have a null instance (rather than a NullReferenceException)

[diegofrata]

@JeremySkinner well spotted! I edited the comment.