ArgumentNullException testing doesn't need deep and complex object graphs

[JSkimming]

Testing for ArgumentNullException doesn't need test specimens with deep object graphs, or even to have auto properties populated. In fact doing so increased the chances of specimen creation failure, by having to create more objects often out of the control of the system under test.

All of the uses so far had to add the following customisation to the AutoFixture.

var throwingRecursionBehavior = fixture.Behaviors.OfType<ThrowingRecursionBehavior>().SingleOrDefault();
if (throwingRecursionBehavior != null)
{
 fixture.Behaviors.Remove(throwingRecursionBehavior);
 fixture.Behaviors.Add(new OmitOnRecursionBehavior());
}

fixture.OmitAutoProperties = true;

It would be simpler to use AutoTest.ArgumentNullException if the framework did this automatically.