C++ (Cpp) Promise::discardの例

コード例 #1

ファイル: future_tests.cpp プロジェクト: GrovoLearning/mesos

TEST(FutureTest, Chain)
{
  Future<string> s = readyFuture()
    .then(lambda::bind(&second, lambda::_1))
    .then(lambda::bind(&third, lambda::_1));

  s.await();

  ASSERT_TRUE(s.isReady());
  EXPECT_EQ("true", s.get());

  s = failedFuture()
    .then(lambda::bind(&second, lambda::_1))
    .then(lambda::bind(&third, lambda::_1));

  s.await();

  ASSERT_TRUE(s.isFailed());

  Promise<bool> promise;

  s = pendingFuture(promise.future())
    .then(lambda::bind(&second, lambda::_1))
    .then(lambda::bind(&third, lambda::_1));

  ASSERT_TRUE(s.isPending());

  promise.discard();

  AWAIT_DISCARDED(s);
}

コード例 #2

ファイル: future_tests.cpp プロジェクト: GrovoLearning/mesos

TEST(FutureTest, RecoverDiscarded)
{
  Promise<int> promise;

  Future<string> future = promise.future()
    .then([]() -> string {
      return "hello";
    })
    .recover([](const Future<string>&) -> string {
      return "world";
    });

  promise.discard();

  AWAIT_EQ("world", future);
}

コード例 #3

ファイル: loop_tests.cpp プロジェクト: ChrisPaprocki/mesos

TEST(LoopTest, DiscardIterate)
{
  Promise<int> promise;

  promise.future().onDiscard([&]() { promise.discard(); });

  Future<Nothing> future = loop(
      [&]() {
        return promise.future();
      },
      [&](int i) -> ControlFlow<Nothing> {
        return Break();
      });

  EXPECT_TRUE(future.isPending());

  future.discard();

  AWAIT_DISCARDED(future);
  EXPECT_TRUE(promise.future().hasDiscard());
}

コード例 #4

ファイル: future_tests.cpp プロジェクト: GrovoLearning/mesos

TEST(FutureTest, Stringify)
{
  Future<bool> future;
  EXPECT_EQ("Abandoned", stringify(future));

  {
    Owned<Promise<bool>> promise(new Promise<bool>());
    future = promise->future();
    promise.reset();
    EXPECT_EQ("Abandoned", stringify(future));
  }

  {
    Owned<Promise<bool>> promise(new Promise<bool>());
    future = promise->future();
    promise->future().discard();
    promise.reset();
    EXPECT_EQ("Abandoned (with discard)", stringify(future));
  }

  {
    Promise<bool> promise;
    future = promise.future();
    EXPECT_EQ("Pending", stringify(future));
    promise.future().discard();
    EXPECT_EQ("Pending (with discard)", stringify(future));
  }

  {
    Promise<bool> promise;
    future = promise.future();
    promise.set(true);
    EXPECT_EQ("Ready", stringify(future));
  }

  {
    Promise<bool> promise;
    future = promise.future();
    promise.future().discard();
    promise.set(true);
    EXPECT_EQ("Ready (with discard)", stringify(future));
  }

  {
    Promise<bool> promise;
    future = promise.future();
    promise.fail("Failure");
    EXPECT_EQ("Failed: Failure", stringify(future));
  }

  {
    Promise<bool> promise;
    future = promise.future();
    promise.future().discard();
    promise.fail("Failure");
    EXPECT_EQ("Failed (with discard): Failure", stringify(future));
  }

  {
    Promise<bool> promise;
    future = promise.future();
    promise.discard();
    EXPECT_EQ("Discarded", stringify(future));
  }

  {
    Promise<bool> promise;
    future = promise.future();
    promise.future().discard();
    promise.discard();
    EXPECT_EQ("Discarded (with discard)", stringify(future));
  }
}