1// Copyright (c) 2018 The LevelDB Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file. See the AUTHORS file for names of contributors.
4
5#include "util/no_destructor.h"
6
7#include <cstdint>
8#include <cstdlib>
9#include <utility>
10
11#include "gtest/gtest.h"
12
13namespace leveldb {
14
15namespace {
16
17struct DoNotDestruct {
18 public:
19 DoNotDestruct(uint32_t a, uint64_t b) : a(a), b(b) {}
20 ~DoNotDestruct() { std::abort(); }
21
22 // Used to check constructor argument forwarding.
23 uint32_t a;
24 uint64_t b;
25};
26
27constexpr const uint32_t kGoldenA = 0xdeadbeef;
28constexpr const uint64_t kGoldenB = 0xaabbccddeeffaabb;
29
30} // namespace
31
32TEST(NoDestructorTest, StackInstance) {
33 NoDestructor<DoNotDestruct> instance(kGoldenA, kGoldenB);
34 ASSERT_EQ(kGoldenA, instance.get()->a);
35 ASSERT_EQ(kGoldenB, instance.get()->b);
36}
37
38TEST(NoDestructorTest, StaticInstance) {
39 static NoDestructor<DoNotDestruct> instance(kGoldenA, kGoldenB);
40 ASSERT_EQ(kGoldenA, instance.get()->a);
41 ASSERT_EQ(kGoldenB, instance.get()->b);
42}
43
44} // namespace leveldb
45