text: /*
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #include <folly/Portability.h>
  
  #if FOLLY_HAS_COROUTINES
  
  #include <folly/experimental/coro/BlockingWait.h>
  #include <folly/experimental/coro/Collect.h>
  #include <folly/experimental/coro/CurrentExecutor.h>
  #include <folly/experimental/coro/Invoke.h>
  #include <folly/experimental/coro/Task.h>
  
  #include <folly/portability/GTest.h>
  
  class CoRescheduleOnCurrentExecutorTest : public testing::Test {};
  
  TEST_F(CoRescheduleOnCurrentExecutorTest, example) {
    std::vector<int> results;
    folly::coro::blockingWait(folly::coro::collectAll(
        folly::coro::co_invoke([&]() -> folly::coro::Task<void> {
          for (int i = 0; i <= 10; i += 2) {
            if (i == 6) {
              co_await folly::coro::co_reschedule_on_current_executor;
            }
            results.push_back(i);
          }
        }),
        folly::coro::co_invoke([&]() -> folly::coro::Task<void> {
          for (int i = 1; i < 10; i += 2) {
            if (i == 7) {
              co_await folly::coro::co_reschedule_on_current_executor;
            }
            results.push_back(i);
          }
        })));
  
    CHECK_EQ(11, results.size());
    const int expected[11] = {0, 2, 4, 1, 3, 5, 6, 8, 10, 7, 9};
    for (int i = 0; i < 11; ++i) {
      CHECK_EQ(expected[i], results[i]);
    }
  }
  
  #endif
  