2 * Copyright 2017 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include <folly/futures/Future.h>
18 #include <folly/portability/GTest.h>
20 using namespace folly;
22 TEST(Filter, alwaysTrye) {
23 EXPECT_EQ(42, makeFuture(42).filter([](int){ return true; }).get());
26 TEST(Filter, alwaysFalse) {
27 EXPECT_THROW(makeFuture(42).filter([](int){ return false; }).get(),
28 folly::PredicateDoesNotObtain);
31 TEST(Filter, moveOnlyValue) {
34 *makeFuture(std::make_unique<int>(42))
35 .filter([](std::unique_ptr<int> const&) { return true; })