1 | /* |
2 | * Copyright 2016-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 <folly/executors/InlineExecutor.h> |
18 | #include <folly/futures/Future.h> |
19 | #include <folly/portability/GTest.h> |
20 | |
21 | using namespace folly; |
22 | |
23 | TEST(SelfDestruct, then) { |
24 | auto* p = new Promise<int>(); |
25 | auto future = p->getFuture().thenValue([p](int x) { |
26 | delete p; |
27 | return x + 1; |
28 | }); |
29 | p->setValue(123); |
30 | EXPECT_EQ(124, std::move(future).get()); |
31 | } |
32 | |
33 | TEST(SelfDestruct, ensure) { |
34 | auto* p = new Promise<int>(); |
35 | auto future = p->getFuture().ensure([p] { delete p; }); |
36 | p->setValue(123); |
37 | EXPECT_EQ(123, std::move(future).get()); |
38 | } |
39 | |
40 | class ThrowingExecutorError : public std::runtime_error { |
41 | public: |
42 | using std::runtime_error::runtime_error; |
43 | }; |
44 | |
45 | class ThrowingExecutor : public folly::Executor { |
46 | public: |
47 | void add(folly::Func) override { |
48 | throw ThrowingExecutorError("ThrowingExecutor::add" ); |
49 | } |
50 | }; |
51 | |
52 | TEST(SelfDestruct, throwingExecutor) { |
53 | ThrowingExecutor executor; |
54 | auto* p = new Promise<int>(); |
55 | auto future = |
56 | p->getFuture().via(&executor).onError([p](ThrowingExecutorError const&) { |
57 | delete p; |
58 | return 456; |
59 | }); |
60 | p->setValue(123); |
61 | EXPECT_EQ(456, std::move(future).get()); |
62 | } |
63 | |
64 | TEST(SelfDestruct, throwingInlineExecutor) { |
65 | InlineExecutor executor; |
66 | |
67 | auto* p = new Promise<int>(); |
68 | auto future = p->getFuture() |
69 | .via(&executor) |
70 | .thenValue([p](auto &&) -> int { |
71 | delete p; |
72 | throw ThrowingExecutorError("callback throws" ); |
73 | }) |
74 | .onError([](ThrowingExecutorError const&) { return 456; }); |
75 | p->setValue(123); |
76 | EXPECT_EQ(456, std::move(future).get()); |
77 | } |
78 | |