Operator overloads for constraints

Hi, I have a proposal for a possible improvement to nunit's usage. I 
could implement this if there was a demand for it, but wanted to know a) 
is it already there and b) is it worth it?

Basically if you have heard of LLBLGen Pro I was 'inspired' by an idea 
from their code. It is a good ORM and I recommend it. Anyway, the point 
is they allow you to build a query using operator overloads e.g.

table.Fill ( MyTable.MyField == 23 );

this would fill a table with all rows where MyField == 23. This is done 
by overloading operator == to return an object instead of a bool. The 
new object describes the comparison.

For nunit I propose an optional syntax like:

Assert.That(Is.Value(2 + 2) == 4);

'Value' is a proposed new static method. It would return a new class 
(e.g. ValueWrapper) with overloaded operator == which returns an 
'EqualConstraint'. Something like:

class ValueWrapper
{
    ...
    public static EqualConstraint operator == ( ValueWrapper lhs, object 
rhs )
    {
        return new EqualConstraint ( lhs.InnerValue, rhs );
    }
    ...
}

So - am I too late, or is it just not that good an idea?

Thanks,
Stephen Boissiere

-------------------------------------------------------------------------
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://sourceforge.net/services/buy/index.php