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/Memory.h>
18 #include <folly/Arena.h>
19 #include <folly/String.h>
20 #include <folly/portability/GTest.h>
22 #include <glog/logging.h>
24 #include <type_traits>
26 using namespace folly;
28 TEST(make_unique, compatible_with_std_make_unique) {
29 // HACK: To enforce that `folly::` is imported here.
30 to_shared_ptr(std::unique_ptr<std::string>());
33 make_unique<string>("hello, world");
36 TEST(to_weak_ptr, example) {
37 auto s = std::make_shared<int>(17);
38 EXPECT_EQ(1, s.use_count());
39 EXPECT_EQ(2, (to_weak_ptr(s).lock(), s.use_count())) << "lvalue";
40 EXPECT_EQ(3, (to_weak_ptr(decltype(s)(s)).lock(), s.use_count())) << "rvalue";
43 TEST(allocate_sys_buffer, compiles) {
44 auto buf = allocate_sys_buffer(256);
45 // Freed at the end of the scope.
48 template <std::size_t> struct T {};
49 template <std::size_t> struct S {};
50 template <std::size_t> struct P {};
52 TEST(as_stl_allocator, sanity_check) {
53 typedef StlAllocator<SysArena, int> stl_arena_alloc;
55 EXPECT_TRUE((std::is_same<
56 as_stl_allocator<int, SysArena>::type,
60 EXPECT_TRUE((std::is_same<
61 as_stl_allocator<int, stl_arena_alloc>::type,
66 TEST(StlAllocator, void_allocator) {
67 typedef StlAllocator<SysArena, void> void_allocator;
69 void_allocator valloc(&arena);
71 typedef void_allocator::rebind<int>::other int_allocator;
72 int_allocator ialloc(valloc);
74 auto i = std::allocate_shared<int>(ialloc, 10);
75 ASSERT_NE(nullptr, i.get());
78 ASSERT_EQ(nullptr, i.get());
81 TEST(rebind_allocator, sanity_check) {
82 std::allocator<long> alloc;
84 auto i = std::allocate_shared<int>(
85 rebind_allocator<int, decltype(alloc)>(alloc), 10
87 ASSERT_NE(nullptr, i.get());
90 ASSERT_EQ(nullptr, i.get());
92 auto d = std::allocate_shared<double>(
93 rebind_allocator<double>(alloc), 5.6
95 ASSERT_NE(nullptr, d.get());
98 ASSERT_EQ(nullptr, d.get());
100 auto s = std::allocate_shared<std::string>(
101 rebind_allocator<std::string>(alloc), "HELLO, WORLD"
103 ASSERT_NE(nullptr, s.get());
104 EXPECT_EQ("HELLO, WORLD", *s);
106 ASSERT_EQ(nullptr, s.get());