| /* |
| * 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 <memory> |
| #include <unordered_set> |
| |
| #include <gtest/gtest.h> |
| |
| #include <folly/MoveWrapper.h> |
| #include <folly/futures/Future.h> |
| |
| using namespace folly; |
| |
| TEST(Ensure, basic) { |
| size_t count = 0; |
| auto cob = [&] { count++; }; |
| auto f = makeFuture(42) |
| .ensure(cob) |
| .then([](int) { throw std::runtime_error("ensure"); }) |
| .ensure(cob); |
| |
| EXPECT_THROW(f.get(), std::runtime_error); |
| EXPECT_EQ(2, count); |
| } |
| |
| TEST(Ensure, mutableLambda) { |
| auto set = std::make_shared<std::unordered_set<int>>(); |
| set->insert(1); |
| set->insert(2); |
| |
| auto f = makeFuture(4) |
| .ensure([set]() mutable { set->clear(); }) |
| .then([]() { throw std::runtime_error("ensure"); }); |
| |
| EXPECT_EQ(0, set->size()); |
| EXPECT_THROW(f.get(), std::runtime_error); |
| } |