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/*
* Copyright 2015 Facebook, Inc.
*
* 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 <gtest/gtest.h>
#include <folly/futures/Future.h>
using namespace folly;
TEST(Map, basic) {
Promise<int> p1;
Promise<int> p2;
Promise<int> p3;
std::vector<Future<int>> fs;
fs.push_back(p1.getFuture());
fs.push_back(p2.getFuture());
fs.push_back(p3.getFuture());
int c = 0;
std::vector<Future<Unit>> fs2 = futures::map(fs, [&](int i){
c += i;
});
// Ensure we call the callbacks as the futures complete regardless of order
p2.setValue(1);
EXPECT_EQ(1, c);
p3.setValue(1);
EXPECT_EQ(2, c);
p1.setValue(1);
EXPECT_EQ(3, c);
EXPECT_TRUE(collect(fs2).isReady());
}