Function Y_UNIT_TEST

library/cpp/threading/future/future_ut.cpp:68–80

    Y_UNIT_TEST_SUITE(TFutureTest) {
        Y_UNIT_TEST(ShouldInitiallyHasNoValue) {
            TPromise<int> promise;
            UNIT_ASSERT(!promise.HasValue());

            promise = NewPromise<int>();
            UNIT_ASSERT(!promise.HasValue());

            TFuture<int> future;
            UNIT_ASSERT(!future.HasValue());

            future = promise.GetFuture();
            UNIT_ASSERT(!future.HasValue());
        }

        Y_UNIT_TEST(ShouldInitiallyHasNoValueVoid) {
            TPromise<void> promise;