C++ Future::value方法代码示例

TEST(JWTSecretGeneratorTest, Generate)
{
  const string secret = "secret";

  JWTSecretGenerator generator(secret);

  Principal principal(Option<string>::none());
  principal.claims["sub"] = "user";
  principal.claims["foo"] = "bar";

  const Future<Secret> token = generator.generate(principal);

  AWAIT_READY(token);

  EXPECT_TRUE(token->has_value());
  EXPECT_TRUE(token->value().has_data());

  const Try<JWT, JWTError> jwt = JWT::parse(token->value().data(), secret);

  EXPECT_SOME(jwt);

  Result<JSON::String> sub = jwt->payload.at<JSON::String>("sub");

  EXPECT_SOME_EQ("user", sub);

  Result<JSON::String> foo = jwt->payload.at<JSON::String>("foo");

  EXPECT_SOME_EQ("bar", foo);
}

TEST(Future, unwrap) {
  Promise<int> a;
  Promise<int> b;

  auto fa = a.getFuture();
  auto fb = b.getFuture();

  bool flag1 = false;
  bool flag2 = false;

  // do a, then do b, and get the result of a + b.
  Future<int> f = fa.then([&](Try<int>&& ta) {
    auto va = ta.value();
    flag1 = true;
    return fb.then([va, &flag2](Try<int>&& tb) {
      flag2 = true;
      return va + tb.value();
    });
  });

  EXPECT_FALSE(flag1);
  EXPECT_FALSE(flag2);
  EXPECT_FALSE(f.isReady());

  a.setValue(3);
  EXPECT_TRUE(flag1);
  EXPECT_FALSE(flag2);
  EXPECT_FALSE(f.isReady());

  b.setValue(4);
  EXPECT_TRUE(flag1);
  EXPECT_TRUE(flag2);
  EXPECT_EQ(7, f.value());
}

// Makes sure that the unwrap call also works when the promise was not yet
// fulfilled, and that the returned Future<T> becomes ready once the promise
// is fulfilled.
TEST(Unwrap, futureNotReady) {
  Promise<Future<int>> p;
  Future<Future<int>> future = p.getFuture();
  Future<int> unwrapped = future.unwrap();
  // Sanity - should not be ready before the promise is fulfilled.
  ASSERT_FALSE(unwrapped.isReady());
  // Fulfill the promise and make sure the unwrapped future is now ready.
  p.setValue(makeFuture(5484));
  ASSERT_TRUE(unwrapped.isReady());
  EXPECT_EQ(5484, unwrapped.value());
}

TEST(Future, unitFutureToUnitIdentity) {
  Future<Unit> fu = makeFuture(Unit{}).unit();
  fu.value();
  EXPECT_TRUE(makeFuture<Unit>(eggs).unit().hasException());
}

//.........这里部分代码省略.........

    mesos.send(call);
  }

  AWAIT_READY(executorLib);

  Future<v1::executor::Event::Subscribed> executorSubscribed;
  EXPECT_CALL(*executor, subscribed(_, _))
    .WillOnce(FutureArg<1>(&executorSubscribed));

  Future<Nothing> launchGroup;
  EXPECT_CALL(*executor, launchGroup(_, _))
    .WillOnce(FutureSatisfy(&launchGroup));

  {
    v1::executor::Call call;
    call.mutable_framework_id()->CopyFrom(frameworkId);
    call.mutable_executor_id()->CopyFrom(v1::DEFAULT_EXECUTOR_ID);

    call.set_type(v1::executor::Call::SUBSCRIBE);

    call.mutable_subscribe();

    executorLib.get()->send(call);
  }

  // Wait for the executor to subscribe. Once it is in the SUBSCRIBED state,
  // the UPDATE and MESSAGE executor calls can be attempted.
  AWAIT_READY(executorSubscribed);
  AWAIT_READY(launchGroup);

  // Create a principal which contains an incorrect ContainerID.
  hashmap<string, string> claims;
  claims["fid"] = frameworkId.value();
  claims["eid"] = v1::DEFAULT_EXECUTOR_ID.value();
  claims["cid"] = id::UUID::random().toString();

  Principal incorrectPrincipal(None(), claims);

  // Generate an authentication token which is signed using the correct key,
  // but contains an invalid set of claims.
  Owned<JWTSecretGenerator> jwtSecretGenerator(
      new JWTSecretGenerator(DEFAULT_JWT_SECRET_KEY));

  Future<Secret> authenticationToken =
    jwtSecretGenerator->generate(incorrectPrincipal);

  AWAIT_READY(authenticationToken);

  v1::ContainerID containerId;
  containerId.set_value(id::UUID::random().toString());
  containerId.mutable_parent()->CopyFrom(executorSubscribed->container_id());

  http::Headers headers;
  headers["Authorization"] = "Bearer " + authenticationToken->value().data();

  // Since the executor library has already been initialized with a valid
  // authentication token, we use an HTTP helper function to send the
  // executor API and operator API calls with an invalid token.

  {
    v1::agent::Call call;
    call.set_type(v1::agent::Call::LAUNCH_NESTED_CONTAINER);

    call.mutable_launch_nested_container()->mutable_container_id()
      ->CopyFrom(containerId);

TEST(Unit, futureToUnit) {
  Future<Unit> fu = makeFuture(42).unit();
  fu.value();
  EXPECT_TRUE(makeFuture<int>(eggs).unit().hasException());
}