1 /*
2 * Copyright (C) 2017 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 #define LOG_TAG "Singleton_test"
18
19 #include <dlfcn.h>
20
21 #include <android-base/file.h>
22 #include <android-base/stringprintf.h>
23 #include <utils/Singleton.h>
24
25 #include <gtest/gtest.h>
26
27 #include "Singleton_test.h"
28
29 namespace android {
30
TEST(SingletonTest,bug35674422)31 TEST(SingletonTest, bug35674422) {
32 std::string path = android::base::GetExecutableDirectory();
33 // libutils_test_singleton1.so contains the ANDROID_SINGLETON_STATIC_INSTANCE
34 // definition of SingletonTestData, load it first.
35 std::string lib = android::base::StringPrintf("%s/libutils_test_singleton1.so", path.c_str());
36 void* handle1 = dlopen(lib.c_str(), RTLD_NOW);
37 ASSERT_TRUE(handle1 != nullptr) << dlerror();
38
39 // libutils_test_singleton2.so references SingletonTestData but should not
40 // have a definition
41 lib = android::base::StringPrintf("%s/libutils_test_singleton2.so", path.c_str());
42 void* handle2 = dlopen(lib.c_str(), RTLD_NOW);
43 ASSERT_TRUE(handle2 != nullptr) << dlerror();
44
45 using has_fn_t = decltype(&singletonHasInstance);
46 using get_fn_t = decltype(&singletonGetInstanceContents);
47 using set_fn_t = decltype(&singletonSetInstanceContents);
48
49 has_fn_t has1 = reinterpret_cast<has_fn_t>(dlsym(handle1, "singletonHasInstance"));
50 ASSERT_TRUE(has1 != nullptr) << dlerror();
51 has_fn_t has2 = reinterpret_cast<has_fn_t>(dlsym(handle2, "singletonHasInstance"));
52 ASSERT_TRUE(has2 != nullptr) << dlerror();
53 get_fn_t get1 = reinterpret_cast<get_fn_t>(dlsym(handle1, "singletonGetInstanceContents"));
54 ASSERT_TRUE(get1 != nullptr) << dlerror();
55 get_fn_t get2 = reinterpret_cast<get_fn_t>(dlsym(handle2, "singletonGetInstanceContents"));
56 ASSERT_TRUE(get2 != nullptr) << dlerror();
57 set_fn_t set1 = reinterpret_cast<set_fn_t>(dlsym(handle2, "singletonSetInstanceContents"));
58 ASSERT_TRUE(set1 != nullptr) << dlerror();
59
60 EXPECT_FALSE(has1());
61 EXPECT_FALSE(has2());
62 set1(12345678U);
63 EXPECT_TRUE(has1());
64 EXPECT_TRUE(has2());
65 EXPECT_EQ(12345678U, get1());
66 EXPECT_EQ(12345678U, get2());
67 }
68
69 }
70