westonpace commented on a change in pull request #9995:
URL: https://github.com/apache/arrow/pull/9995#discussion_r612924937
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File path: cpp/src/arrow/util/async_generator_test.cc
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@@ -1299,4 +1299,26 @@ TEST(PushGenerator, Stress) {
}
}
+TEST(SingleFutureGenerator, Basics) {
+ auto fut = Future<TestInt>::Make();
+ auto gen = MakeSingleFutureGenerator(fut);
+ auto collect_fut = CollectAsyncGenerator(gen);
+ AssertNotFinished(collect_fut);
+ fut.MarkFinished(TestInt{42});
+ ASSERT_FINISHES_OK_AND_ASSIGN(auto collected, collect_fut);
+ ASSERT_EQ(collected, std::vector<TestInt>{42});
+ // Generator exhausted
+ collect_fut = CollectAsyncGenerator(gen);
Review comment:
There is an `AssertGeneratorExhausted` if you wanted to use it in these
tests.
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