1/*
2 * Copyright 2018-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/detail/StaticSingletonManager.h>
18
19#include <folly/portability/GTest.h>
20
21namespace folly {
22namespace detail {
23
24extern "C" int* check() {
25 return &createGlobal<int, void>();
26}
27
28struct StaticSingletonManagerTest : public testing::Test {};
29
30template <typename T>
31struct Tag {};
32
33template <int I>
34using Int = std::integral_constant<int, I>;
35
36TEST_F(StaticSingletonManagerTest, example) {
37 using T = std::integral_constant<int, 3>;
38
39 auto& i = createGlobal<T, Tag<char>>();
40 EXPECT_EQ(T::value, i);
41
42 auto& j = createGlobal<T, Tag<char>>();
43 EXPECT_EQ(&i, &j);
44 EXPECT_EQ(T::value, j);
45
46 auto& k = createGlobal<T, Tag<char*>>();
47 EXPECT_NE(&i, &k);
48 EXPECT_EQ(T::value, k);
49}
50
51} // namespace detail
52} // namespace folly
53