public void Select_ExceptionThrownFromCurrentOfSourceIterator_IteratorCanBeUsedAfterExceptionIsCaught()
{
IEnumerable<int> source = new ThrowsOnCurrent();
Func<int, int> selector = i => i + 1;
var result = source.Select(selector);
var enumerator = result.GetEnumerator();
Assert.Throws<InvalidOperationException>(() => enumerator.MoveNext());
enumerator.MoveNext();
Assert.Equal(3 /* 2 + 1 */, enumerator.Current);
}