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 #include <vector>
18
19 #include <gtest/gtest.h>
20
21 #include <android-base/file.h>
22
23 #include "MemoryOffline.h"
24
25 namespace unwindstack {
26
27 class MemoryOfflineTest : public ::testing::Test {
28 protected:
SetUp()29 void SetUp() override {
30 for (size_t i = 0; i < 1024; ++i) {
31 data.push_back(i & 0xff);
32 }
33
34 ASSERT_TRUE(android::base::WriteFully(temp_file.fd, &offset, sizeof(offset)));
35 ASSERT_TRUE(android::base::WriteFully(temp_file.fd, data.data(), data.size()));
36
37 memory = std::make_unique<MemoryOffline>();
38 ASSERT_TRUE(memory != nullptr);
39
40 ASSERT_TRUE(memory->Init(temp_file.path, 0));
41 }
42
43 TemporaryFile temp_file;
44 uint64_t offset = 4096;
45 std::vector<char> data;
46 std::unique_ptr<MemoryOffline> memory;
47 };
48
TEST_F(MemoryOfflineTest,read_boundaries)49 TEST_F(MemoryOfflineTest, read_boundaries) {
50 char buf = '\0';
51 ASSERT_EQ(0U, memory->Read(offset - 1, &buf, 1));
52 ASSERT_EQ(0U, memory->Read(offset + data.size(), &buf, 1));
53 ASSERT_EQ(1U, memory->Read(offset, &buf, 1));
54 ASSERT_EQ(buf, data.front());
55 ASSERT_EQ(1U, memory->Read(offset + data.size() - 1, &buf, 1));
56 ASSERT_EQ(buf, data.back());
57 }
58
TEST_F(MemoryOfflineTest,read_values)59 TEST_F(MemoryOfflineTest, read_values) {
60 std::vector<char> buf;
61 buf.resize(2 * data.size());
62 ASSERT_EQ(data.size(), memory->Read(offset, buf.data(), buf.size()));
63 buf.resize(data.size());
64 ASSERT_EQ(buf, data);
65 }
66
67 } // namespace unwindstack
68