public void can_check_no_items_match()
{
var pass = Check.That(subject).container[Should.HaveNone(o => o as string == "four", "four found!")];
var fail = Check.That(subject).container[Should.HaveNone(o => o as string == "three", "three found!")];
Assert.That(pass.Success, Is.True, pass.Reason);
Assert.That(fail.Success, Is.False);
Assert.That(fail.Reasons, Contains.Item("Outer.container three found!"));
}