1 /*
2  * Copyright (C) 2016 The Android Open Source Project
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 "gtest/gtest.h"
18 
19 #include "chre/util/singleton.h"
20 
21 using chre::Singleton;
22 
23 TEST(Singleton, Lifecycle) {
24   EXPECT_FALSE(Singleton<int>::isInitialized());
25   EXPECT_EQ(Singleton<int>::safeGet(), nullptr);
26 
27   Singleton<int>::init(0x1337);
28   ASSERT_NE(Singleton<int>::get(), nullptr);
29   EXPECT_TRUE(Singleton<int>::isInitialized());
30   EXPECT_EQ(*Singleton<int>::get(), 0x1337);
31   Singleton<int>::init(0xcafe);
32   ASSERT_NE(Singleton<int>::get(), nullptr);
33   EXPECT_TRUE(Singleton<int>::isInitialized());
34   EXPECT_EQ(*Singleton<int>::get(), 0x1337);
35 
36   Singleton<int>::deinit();
37   EXPECT_EQ(Singleton<int>::safeGet(), nullptr);
38   EXPECT_FALSE(Singleton<int>::isInitialized());
39 
40   Singleton<int>::init(0xface);
41   ASSERT_NE(Singleton<int>::get(), nullptr);
42   EXPECT_TRUE(Singleton<int>::isInitialized());
43   EXPECT_EQ(*Singleton<int>::get(), 0xface);
44 }
45