1 | /* |
2 | * Copyright 2015-present Facebook, Inc. |
3 | * |
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 |
7 | * |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * |
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. |
15 | */ |
16 | |
17 | #include <memory> |
18 | #include <unordered_set> |
19 | |
20 | #include <folly/futures/Future.h> |
21 | #include <folly/portability/GTest.h> |
22 | |
23 | using namespace folly; |
24 | |
25 | TEST(Ensure, basic) { |
26 | size_t count = 0; |
27 | auto cob = [&] { count++; }; |
28 | auto f = makeFuture(42) |
29 | .ensure(cob) |
30 | .thenValue([](int) { throw std::runtime_error("ensure" ); }) |
31 | .ensure(cob); |
32 | |
33 | EXPECT_THROW(std::move(f).get(), std::runtime_error); |
34 | EXPECT_EQ(2, count); |
35 | } |
36 | |
37 | TEST(Ensure, mutableLambda) { |
38 | auto set = std::make_shared<std::unordered_set<int>>(); |
39 | set->insert(1); |
40 | set->insert(2); |
41 | |
42 | auto f = makeFuture(4) |
43 | .ensure([set]() mutable { set->clear(); }) |
44 | .thenValue([](auto&&) { throw std::runtime_error("ensure" ); }); |
45 | |
46 | EXPECT_EQ(0, set->size()); |
47 | EXPECT_THROW(std::move(f).get(), std::runtime_error); |
48 | } |
49 | |