westonpace commented on a change in pull request #10008:
URL: https://github.com/apache/arrow/pull/10008#discussion_r616012277
##########
File path: cpp/src/arrow/util/iterator_test.cc
##########
@@ -145,6 +145,23 @@ void AssertIteratorNext(T expected, Iterator<T>& it) {
ASSERT_EQ(expected, actual);
}
+template <typename T>
+Iterator<T> FailsAt(Iterator<T> source, int failure_index, Status failure) {
+ struct Iter {
+ Result<T> Next() {
+ if (index++ == failure_index) {
+ return failure;
+ }
+ return source.Next();
+ }
+ Iterator<T> source;
+ int failure_index;
+ Status failure;
+ int index;
+ };
+ return Iterator<T>(Iter{std::move(source), failure_index,
std::move(failure), 0});
+}
+
Review comment:
Correct. I've removed them.
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