public static void First_AggregateException(Labeled <ParallelQuery <int> > labeled, int count)
{
Functions.AssertThrowsWrapped <DeliberateTestException>(() => labeled.Item.First(x => { throw new DeliberateTestException(); }));
Functions.AssertThrowsWrapped <DeliberateTestException>(() => labeled.Item.FirstOrDefault(x => { throw new DeliberateTestException(); }));
}